[39] Listed as shack c. in 1948 USDA Yearbook of Agriculture.
[40] The genus Dalea includes Petalostemum in some manuals.
[41] Often termed stemless loco in older literature but the name loco should be reserved for the genus Astragalus.
[42] The genus Petalostemum is included in Dalea in some manuals.
OTHER DICOT FORBS
| Abronia fragrans Nutt. ex Hook. | sweet sandverbena |
| Abutilon theophrasti Medic. | velvetleaf |
| Acalypha L. | copperleaf |
| gracilens Gray | slender c. |
| ostryaefolia Riddell | hophornbeam c. |
| virginica L. | Virginia c. |
| Acerates (see Asclepias) | |
| Achillea L. | yarrow |
| millefolium L. subsp. millefolium | common y. |
| millefolium L. subsp. lanulosa (Nutt.) Piper | western y. |
| Acnida tamariscina (Nutt.) Wood | waterhemp |
| Actinea (see Hymenoxys) | |
| Actinomeris (see Verbesina) | |
| Agastache Clayt. | gianthyssop |
| nepetoides (L.) Ktze. | catnip g. |
| scrophulariaefolia (Willd.) Ktze. | purple g. |
| Agoseris cuspidata (see Microseris) | |
| Agrimonia L. | agrimony |
| parviflora Ait. | many flower a. |
| pubescens Wallr. | downy a. |
| rostellata Wallr. | woodland a. |
| Agrostemma githago L. | common corncockle |
| Alliaria officinalis Andrz. | garlicmustard |
| Allionia (included in Mirabilis) | |
| Amaranthus L. | pigweed (amaranth of SPN) |
| graecizans L. (A. blitoides S. Wats.) | tumbleweed |
| hybridus L. | slim p. |
| palmeri S. Wats. | palmer p. |
| retroflexus L. | rough p. |
| spinosus L. | spiny p. |
| torreyi (Gray) Benth. | torrey p. |
| Ambrosia L. | ragweed |
| artemisiifolia L. (A. elatior L.) | common r. |
| bidentata Michx. | lanceleaf r. |
| psilostachya DC. (A. coronopifolia T. & G.) | western r. |
| trifida L. | giant r. |
| Ammannia | ammannia |
| auriculata Willd. | earleaf a. |
| coccinea Rottb. | purple a. |
| Ampelamus albidus (Nutt.) Britt. (Gonolobus laevis of manuals, not Michx.) | climbingmilkweed |
| Amsonia tabernaemontana Walt. | willow amsonia |
| Anagallis arvensis L. | scarlet pimpernel |
| Androsace occidentalis Pursh | western rockjasmine |
| Anemone L. | anemone |
| canadensis L. | meadow a. |
| caroliniana Walt. | Carolina a. |
| cylindrica Gray | candle a. |
| decapetala Ard. | tenpetal a. |
| virginiana L. | Virginia a. |
| Antennaria Gaertn. | pussytoes |
| neglecta Greene (including A. campestris Rydb. & A. longifolia Greene) | field p. |
| plantaginifolia (L.) Richards (including A. fallax Greene) | plantainleaf p. |
| Anthemis L. | camomile |
| cotula L. | mayweed c. |
| tinctoria L. | golden c. |
| Anychia (see Paronychia) | |
| Aplopappus (see Haplopappus) | |
| Apocynum L. | dogbane |
| cannabinum L. | hemp d. |
| sibiricum Jacq. | prairie d. |
| Aquilegia L. | columbine |
| Arabis L. | rockcress |
| canadensis L. | sickle pod |
| dentata (Torr.) T. & G. | toothed r. |
| hirsuta (L.) Scop. var. pycnocarpa (M. Hopkins) Rollins | hairy r. |
| laevigata (Muhl.) Poir. | smooth r. |
| virginica (L.) Poir. | Virginia r. |
| Arctium minus (Hill) Bernh. | smaller burdock |
| Arenaria L. | sandwort |
| patula Michx. | pitchers s. |
| serpyllifolia L. | thymeleaf s. |
| stricta Michx. var. texana Robins. | Texas s. |
| Argemone L. | pricklypoppy |
| polyanthemos (Fedde) G. Ownbey | |
| squarrosa Greene (including A. hispida Gray) | hedgehog p. |
| Aristolochia tomentosa Sims | dutchmanspipe |
| Armoracia lapathifolia Gilib. [Rorippa armoracia (L.) Hitchc.] | common horseradish |
| Artemisia L. | sagewort; sagebrush |
| annua L. | sweet sagewort |
| biennis Willd. | biennial sagewort |
| campestris L. (A. canadensis Michx.) | prairie sagewort |
| dracunculus L. | falsetarragan sagewort |
| filifolia Torr. | sand sagebrush |
| ludoviciana Nutt. [including var. gnaphalodes (Nutt.) T. & G.] | Louisiana sagewort |
| vulgaris L. | common sagewort |
| Asarum canadense L. | wildginger |
| Asclepias L. (including Acerates Ell.) | milkweed |
| amplexicaulis Sm. | bluntleaf m. |
| arenaria Torr. | sand m. |
| auriculata (Engelm.) Holz. (Acerates a. Engelm.) | leafy m. |
| hirtella (Pennell) Woodson (Acerates h. Pennell) | prairie m. |
| incarnata L. | swamp m. |
| lanuginosa Nutt. [Acerates l. (Nutt.) DC.] | woolly m. |
| latifolia (Torr.) Raf. | broadleaf m. |
| pumila (Gray) Vail | plains m. |
| purpurascens L. | purple m. |
| speciosa Torr. | showy m. |
| stenophylla Gray (Acerates angustifolia Dene.) | narrowleaf m. |
| subverticillata (Gray) Vail (A. galioides HBK.) | poison m. |
| sullivantii Engelm. | sullivant m. |
| syriaca L. var. kansana (Vail) Palmer & Steyerm. | Kansas m. |
| syriaca L. var. syriaca | common m. |
| tuberosa L. | butterfly m. |
| verticillata L. | whorled m. |
| viridiflora Raf. [Acerates v. (Raf.) Eaton] | green m. |
| Asclepiodora[43] Gray | antelopehorn |
| decumbens (Nutt.) Gray (Asclepias capricornu Woodson) | spider a. |
| viridis (Walt.) Gray (Asclepias v. Walt.) | green a. |
| Aster L. | aster |
| anomalus Engelm. | manyray a. |
| arenosus Blake [Leucelene ericoides (Torr.) Greene] | babywhite a. |
| azureus Lindl. | azure a. |
| drummondii Lindl. | drummond a. |
| ericoides L. | heath a. |
| exilis Ell. | slim a. |
| fendleri Gray | fendler a. |
| laevis L. var. laevis | smooth a. |
| novae-angliae L. | New England a. |
| oblongifolius Nutt. | aromatic a. |
| ontarionis Wieg. (A. missouriensis Britt., & A. pantotrichus Blake) | Missouri a. |
| paludosus Ait. | singlestem bog a. |
| praealtus Poir. | willowleaf a. |
| sagittifolius Wedemeyer | arrow a. |
| sericeus Vent. | silky a. |
| simplex Willd. (A. paniculatus Lam. not Mill.) | panicled a. |
| tanacetifolius HBK. [Machaeranthera t. (HBK.) Nees] | tansyleaf a. |
| tataricus L. f. | tatarian a. |
| vimineus Lam. | small white a. |
| Astranthium integrifolium (Michx.) Nutt. | entireleaved westerndaisy |
| Atriplex L. | saltbush |
| argentea Nutt. | silverscale s. |
| canescens (Pursh) Nutt. | fourwing s. |
| patula L. | fat-hen s. |
| rosea L. | tumbling orach |
| Aureolaria (see Gerardia) | |
| Bacopa rotundifolia (Michx.) Wettst. (Macuillamia r. Michx.) | disk waterhyssop |
| Bahia oppositifolia (Nutt.) DC. [Picradeniopsis o. (Nutt.) Rydb.] | plains bahia |
| Barbarea vulgaris R. Br. | bitter wintercress |
| Bergia texana (Hook.) Seubert | Texas bergia |
| Berlandiera DC. | berlandiera |
| lyrata Benth. | wireleaf b. |
| texana DC. | Texas b. |
| Berteroa incana (L.) DC. | hoary false-alyssum |
| Berula erecta (Huds.) Coville | stalky berula |
| Beta L. | beet |
| Bidens L. | beggarticks |
| bipinnata L. | spanishneedles |
| cernua L. [including B. glaucescens Greene, & B. elliptica (Wieg.) Gleason] | nodding b. |
| frondosa L. | devils b. |
| polylepis Blake [B. involucrata (Nutt.) Britt.] | coreopsis b. |
| tripartita L. [B. comosa (Gray) Wieg., & B. connata Muhl.] | bur b. |
| vulgata Greene | tall b. |
| Boehmeria cylindrica (L.) Sw. | smallspike falsenettle |
| Boltonia L’Her. | boltonia |
| asteroides (L.) L’Her. var. recognita (Fern. & Griscom) Cron. (B. latisquama Gray var. recognita Fern. & Griscom) | white b. |
| asteroides (L.) L’Her. var. latisquama (Gray) Cron. (B. latisquama Gray) | violet b. |
| Brassica L. | mustard |
| juncea (L.) Coss. | India m. |
| kaber (DC.) L. C. Wheeler | charlock |
| napus L. (B. rapa of authors, not L.) | turnip |
| nigra (L.) Koch | black m. |
| oleracea L. | cabbage, etc. |
| rapa L. (B. campestris L.) | rape & rutabaga |
| Brickellia grandiflora (Hook.) Nutt. [B. umbellata (Greene) Rydb.] | brickellia |
| Buchnera americana L. | American bluehearts |
| Cacalia L. | indian plantain |
| atriplicifolia L. | pale i. |
| tuberosa Nutt. | tuberous i. |
| Calceolaria (see Hybanthus) | |
| Callirhoë Nutt. | poppymallow |
| alcaeoides (Michx.) Gray | pale p. |
| digitata Nutt. | finger p. |
| involucrata (T. & G.) Gray | purple p. |
| Callitriche heterophylla Pursh | waterstarwort |
| Camelina microcarpa Andrz. | littlepod falseflax |
| Campanula americana L. | American bellflower |
| Cannabis sativa L. | hemp |
| Capsella bursa-pastoris (L.) Medic. | shepherdspurse |
| Cardamine L. | bittercress |
| bulbosa (Schreb.) BSP. | bulb b. |
| parviflora L. | smallflower b. |
| pensylvanica Muhl. | Pennsylvania b. |
| Cardaria draba (L.) Desv. (Lepidium draba L.) | hoary cress |
| Carduus nutans L. | muskthistle |
| Carthamus tinctorius L. | safflower |
| Castilleja Mutis | paintbrush |
| citrina Pennell | citron p. |
| coccinea (L.) Spreng. | indian p. |
| sessiliflora Pursh | downy p. |
| Centaurea L. | centaurea |
| americana Nutt. | basketflower |
| cyanus L. | cornflower |
| repens L. (C. picris Pall.) | Russian knapweed |
| solstitialis L. | yellow c. |
| Cerastium L. | cerastium |
| brachypodum (Engelm.) Robins. | shortstalk c. |
| nutans Raf. | powderhorn c. |
| vulgatum L. | big c. |
| Ceratophyllum demersum L. | hornwort |
| Chaerophyllum L. | chervil |
| procumbens (L.) Crantz | spreading c. |
| reflexum Bush. | reflexed c. |
| texanum C. & R. | Texas c. |
| Chamaesaracha Gray | falsenightshade |
| conioides (Moric.) Britt. | |
| coronopus (Dunal) Gray | green f. |
| Chamaesyce (included in Euphorbia) | |
| Chenopodium L. | goosefoot |
| albescens Small | pale g. |
| album L. | lambsquarters |
| ambrosioides L. | wormseed g. |
| berlandieri Moq. | pitseed g. |
| boscianum Moq. | goosefoot |
| cycloides A. Nels. | sandhill g. |
| fremontii S. Wats. | fremont g. |
| glaucum L. | oakleaf g. |
| hybridum L. var. gigantospermum (Aellen) Rouleau | mapleleaf g. |
| incanum (S. Wats.) Heller | |
| leptophyllum Nutt. | slimleaf g. |
| murale L. | nettleleaf g. |
| petiolare HBK. | |
| salinum Standl. | alkali g. |
| Chrysanthemum leucanthemum L. | oxeyedaisy |
| Chrysopsis Ell. | goldaster |
| pilosa Nutt. | soft g. |
| villosa (Pursh) Nutt. var. angustifolia (Rydb.) Cron. [C. angustifolia Rydb., C. stenophylla (Gray) Greene] | |
| villosa (Pursh) Nutt. var. canescens Gray (C. berlandieri Greene) | |
| villosa (Pursh) Nutt. var. foliosa (Nutt.) D. C. Eat. (C. foliosa Nutt.) | leafy g. |
| villosa (Pursh) Nutt. var. hispida (Hook.) Gray [C. viscida (Gray) Greene] | rough g. |
| villosa (Pursh) Nutt. var. villosa (including C. bakeri Greene, C. ballardi Rydb., C. hirsutissima Greene, & C. asprella Greene) | hairy g. |
| Cichorium intybus L. | common chicory |
| Cicuta maculata L. | waterhemlock |
| Circaea latifolia Hill | broadleaf circaea |
| Cirsium Mill. | thistle |
| altissimum (L.) Spreng. | tall t. |
| arvense (L.) Scop. | Canada t. |
| ochrocentrum Gray | yellowspine t. |
| undulatum (Nutt.) Spreng. | wavyleaf t. |
| vulgare (Savi) Airy-Shaw (C. lanceolatum of manuals) | bull t. |
| Claytonia virginica L. | Virginia springbeauty |
| Clematis L. | clematis |
| fremontii S. Wats. | fremont c. |
| ligusticifolia Nutt. | western c. |
| pitcheri T. & G. | pitcher c. |
| virginiana L. | virginsbower |
| Cleome L. | spiderflower |
| serrulata Pursh | bee s. |
| spinosa Jacq. | spiny s. |
| Cleomella angustifolia Torr. | cleomella |
| Cocculus carolinus (L.) DC. | Carolina snailseed |
| Collinsia violacea Nutt. | collinsia |
| Comandra Nutt. | comandra |
| pallida A. DC. | pale c. |
| richardsiana Fern. | richards c. |
| Conium maculatum L. | poisonhemlock |
| Conobea multifida (Michx.) Benth. [Leucospora m. (Michx.) Nutt.] | paleseed |
| Conringia orientalis (L.) Dumort. | treacle haresear |
| Convolvulus L. | bindweed |
| arvensis L. | field b. |
| incanus Vahl | gray b. |
| sepium L. (including C. interior House of manuals) | hedge b. |
| Conyza L. | conyza |
| canadensis (L.) Cron. [Erigeron c. L., Leptilon c. (L.) Britt.] | horseweed |
| ramosissima Cron. (Erigeron divaricatus Michx.) | |
| Coreopsis L. | coreopsis |
| grandiflora Hogg | bigflower c. |
| palmata Nutt. | finger c. |
| tinctoria Nutt. | plains c. |
| Corispermum L. | tickseed |
| hyssopifolium L. | hyssopleaf t. |
| nitidum Kit. | bugseed |
| Corydalis Medic. | corydalis |
| aurea Willd. | golden c. |
| campestris (Britt.) Buchholz & Palmer | plains c. |
| crystallina Engelm. | mealy c. |
| flavula (Raf.) DC. | pale c. |
| micrantha (Engelm.) Gray | smallflower c. |
| Cristatella jamesii T. & G. | cristatella |
| Croton L. | croton |
| capitatus Michx. | woolly c. |
| glandulosus L. var. septentrionalis Muell. Arg. | tropic c. |
| lindheimerianus Scheele | threeseed c. |
| monanthogynus Michx. | oneseed c. |
| texensis (Klotzsch) Muell. Arg. | Texas c. |
| Crotonopsis elliptica Willd. | crotonopsis |
| Cryptantha Lehm. (including Oreocarya Greene) | cryptantha |
| crassisepala (T. & G.) Greene | thicksepal c. |
| jamesii (Torr.) Payson [O. suffruticosa (Torr.) Greene] | james c. |
| Cucurbita foetidissima HBK. | buffalogourd |
| Cuphea petiolata (L.) Koehne | clammy cuphea |
| Cuscuta L. | dodder |
| cephalanthi Engelm. | buttonbush d. |
| coryli Engelm. | hazel d. |
| cuspidata Engelm. | cusp d. |
| glomerata Choisy | cluster d. |
| indecora Choisy | showy d. |
| pentagona Engelm. | field d. |
| polygonorum Engelm. | smartweed d. |
| Cyclanthera dissecta (T. & G.) Arn. | cyclanthera |
| Cycloloma atriplicifolium (Spreng.) Coult. | tumble ringwing |
| Cymopterus Raf. | cymopterus |
| acaulis (Pursh) Raf. | stemless c. |
| montanus (Nutt.) T. & G. (Phellopterus m. Nutt.) | mountain corkwing |
| Cynoglossum L. | houndstongue |
| officinale L. | common h. |
| virginianum L. | wildcomfrey h. |
| Dasistoma macrophylla (Nutt.) Raf. | oakleech |
| Datura L. | datura |
| innoxia Mill. (D. meteloides DC., D. metel of manuals, not L.) | sacred d. |
| stramonium L. | jimsonweed |
| Daucus L. | carrot |
| carota L. | wild c. |
| pusillus Michx. | southwestern c. |
| Delphinium L. | larkspur |
| ajacis L. | rocket l. |
| tricorne Michx. | dwarf l. |
| virescens Nutt. | plains l. |
| Dentaria laciniata Muhl. | cutleaf toothwort |
| Descurainia Webb & Berthelot | tansymustard |
| pinnata (Walt.) Britt. [including D. intermedia (Rydb.) Daniels, & D. magna Rydb.] | pinnate t. |
| sophia (L.) Webb | flixweed t. |
| Dianthera (see Justicia) | |
| Diaperia prolifera Nutt. | diaperia |
| Dicentra cucullaria (L.) Bernh. | dutchmans-breeches |
| Dicliptera brachiata (Pursh) Spreng. | dicliptera |
| Diodia teres Walt. | rough buttonweed |
| Ditaxis Vahl | ditaxis |
| humilis (Engelm. & Gray) Pax | low d. |
| mercurialina (Nutt.) Coult. | tall d. |
| Dodecatheon meadia L. | common shootingstar |
| Draba L. | draba |
| brachycarpa Nutt. | shortpod d. |
| cuneifolia Nutt. | wedgeleaf d. |
| reptans (Lam.) Fern. (D. caroliniana Walt.) | carolina d. |
| Dracopis amplexicaulis (Vahl) Cass. (Rudbeckia a. Vahl) | clasping coneflower |
| Dyssodia papposa (Vent.) Hitchc. | prairie dogweed |
| Echinacea Moench | echinacea |
| angustifolia DC. | blacksamson e. |
| atrorubens Nutt. [including E. paradoxa (Norton) Britt.] | yellow e. |
| pallida Nutt. | pale e. |
| Echinocereus Engelm. | echinocereus |
| reichenbachii (Terscheck) Haage jr. (E. caespitosus Engelm.) | lace e. |
| viridiflorus Engelm. | greenpitaya e. |
| Echinocystis lobata (Michx.) T. & G. | wild mockcucumber |
| Echium vulgare L. | blueweed |
| Eclipta alba (L.) Hassk. | yerbadetajo |
| Elephantopus carolinianus Willd. | elephantsfoot |
| Ellisia nyctelea L. | ellisia |
| Engelmannia pinnatifida T. & G. | engelmanndaisy |
| Epilobium L. | willowweed |
| angustifolium L. | fireweed |
| coloratum Biehler | purpleleaf w. |
| leptophyllum Raf. (E. lineare of manuals, not Muhl.) | narrowleaf w. |
| Erechtites hieracifolia (L.) Raf. | American burnweed |
| Erigeron L. (see also Conyza) | fleabane |
| annuus (L.) Pers. | annual f. |
| bellidiastrum Nutt. | western f. |
| flagellaris Gray | trailing f. |
| philadelphicus L. | Philadelphia f. |
| pumilus Nutt. | low f. |
| strigosus Muhl. [E. ramosus (Walt.) BSP.] | daisy f. |
| Eriogonum Michx. | eriogonum |
| annuum Nutt. | annual e. |
| longifolium Nutt. | longleaf e. |
| Erodium cicutarium (L.) L’Her. | filaree |
| Eruca sativa Mill. | rocketsalad |
| Eryngium L. | eryngo |
| leavenworthii T. & G. | leavenworth e. |
| yuccifolium Michx. | buttonsnakeroot e. |
| Erysimum L. | erysimum |
| asperum (Nutt.) DC. | plains e. |
| inconspicuum (S. Wats.) MacM. | smallflower e. |
| repandum L. | spreading e. |
| Eulophus (see Perideridia) | |
| Eupatorium L. | eupatorium; joepyeweed |
| altissimum L. | tall e. |
| coelestinum L. | mistflower e. |
| maculatum L. | spotted j. |
| perfoliatum L. | boneset |
| purpureum L. (E. falcatum Michx.) | bluestem j. |
| rugosum Houtt. (E. urticaefolium Reichard) | white snakeroot |
| serotinum Michx. | late e. |
| Euphorbia L. [including Tithymalus (Tourn.) Adans., & Chamaesyce Small] | euphorbia; spurge |
| corollata L. | flowering s. |
| dentata Michx. [including E. cuphosperma (Engelm.) Boiss.] | toothed e. |
| dictyosperma Fisch. & Mey. | warty e. |
| esula L. | leafy s. |
| fendleri T. & G. (E. greenei in Rydb.’s floras) | fendler e. |
| geyeri Engelm. | geyer e. |
| glyptosperma Engelm. | ridgeseed e. |
| heterophylla L. | painted e. |
| hexagona Nutt. | sixangle e. |
| humistrata Engelm. | spreading e. |
| lata Engelm. | hoary e. |
| maculata L. (variously known as E. hypericifolia L., E. hyssopifolia L., E. nutans Lag., & E. preslii Guss.) | spotted e. |
| marginata Pursh | snow-on-the-mountain |
| missurica Raf. [including E. nuttallii (Engelm.) Small, & E. petaloidea Engelm.] | Missouri s. |
| obtusata Pursh | roughpod e. |
| serpens HBK. | serpent e. |
| serpyllifolia Pers. | thymeleaf e. |
| stictospora Engelm. | slimseed e. |
| supina Raf. (called E. maculata L. in manuals) | prostrate s. |
| Eustoma russellianum (Hook.) Griseb. | russell prairiegentian |
| Evolvulus nuttallianus R. & S. | nuttall evolvulus |
| Fagopyrum sagittatum Gilib. (F. esculentum Moench) | common buckwheat |
| Flaveria campestris J. R. Johnston | flaveria |
| Fragaria virginiana Duchesne | wild strawberry |
| Franseria Cav. | bursage |
| acanthicarpa (Hook.) Coville | variable b. |
| confertiflora (DC.) Rydb. (F. tenuifolia Harv. & Gray) | slimleaf b. |
| tomentosa Gray | burragweed |
| Froelichia Moench | snakecotton |
| floridana (Nutt.) Moq. var. campestris (Small) Fern. (F. campestris Small) | field s. |
| gracilis (Hook.) Moq. | slender s. |
| Gaillardia Foug. | gaillardia |
| aristata Pursh | common perennial g. |
| drummondii (Hook.) DC. | drummond g. |
| fastigiata Greene | prairie g. |
| pulchella Foug. (G. aristosa of manuals) | rosering g. |
| Galinsoga ciliata (Raf.) Blake (G. aristulata Bickn.) | fringed quickweed |
| Galium L. | bedstraw |
| aparine L. | catchweed b. |
| circaezans Michx. var. hypomalacum Fern. | woods b. |
| concinnum T. & G. | shining b. |
| obtusum Bigel. | bluntleaf b. |
| pilosum Ait. | hairy b. |
| tinctorium L. | dye b. |
| triflorum Michx. | fragrant b. |
| Gaura L. | gaura |
| biennis L. | biennial g. |
| coccinea Pursh | scarlet g. |
| parviflora Dougl. | smallflower g. |
| villosa Torr. | hairy g. |
| Gentiana puberula Michx. | downy gentian |
| Geranium L. | geranium |
| carolinianum L. | Carolina g. |
| maculatum L. | spotted g. |
| Gerardia L. | gerardia |
| aspera Dougl. | rough g. |
| auriculata Michx. [Tomanthera a. (Michx.) Raf.] | earleaf g. |
| densiflora Benth. [Tomanthera d. (Benth.) Raf.] | fineleaf g. |
| grandiflora Benth. [Aureolaria g. (Benth.) Pennell] | bigflower g. |
| skinneriana Wood | rose g. |
| tenuifolia Vahl | slender g. |
| Geum L. | avens |
| canadense Jacq. | white a. |
| vernum (Raf.) T. & G. | heartleaf a. |
| Gilia R. & P. | gilia |
| laxiflora (Coult.) Osterh. | irion g. |
| longiflora (Torr.) G. Don | whiteflower g. |
| spicata Nutt. | spike g. |
| Glechoma hederacea L. [Nepeta h. (L.) Trevisan] | groundivy |
| Gnaphalium L. | cudweed |
| obtusifolium L. | fragrant c. |
| purpureum L. | purple c. |
| Gonolobus (see Ampelamus) | |
| Gossypium hirsutum L. | upland cotton |
| Gratiola L. | hedgehyssop |
| aurea Muhl. (G. lutea Raf. in part) | golden h. |
| virginiana L. | Virginia h. |
| Grindelia Willd. | gumweed |
| lanceolata Nutt. | spinytooth g. |
| squarrosa (Pursh) Dunal | curlycup g. |
| Gutierrezia Lag. | snakeweed |
| dracunculoides (DC.) Blake [Amphiachyris d. (DC.) Nutt.] | broomweed |
| sarothrae (Pursh) Britt. & Rusby (including G. diversifolia Greene, & G. linearis Rydb.) | broom s. |
| Hackelia virginiana (L.) I. M. Johnston [Lappula v. (L.) Greene] | Virginia stickseed |
| Haplopappus Endl. (including Aplopappus Cass., Sideranthus Sweet, & Oonopsis Greene) | goldenweed |
| ciliatus (Nutt.) DC. (Prionopsis ciliata Nutt.) | wax g. |
| divaricatus (Nutt.) Gray [Isopappus d. (Nutt.) T. & G.] | slender g. |
| englemannii Z. (Gray) Hall [Oonopsis e. (Gray) Greene] | englemann g. |
| phyllocephalus DC. (Sideranthus annuus Rydb.) | annual g. |
| spinulosus (Pursh) DC. [Sideranthus s. (Pursh) Sweet] | ironplant |
| Hedeoma Pers. | falsepennyroyal |
| drummondii Benth. | drummond f. |
| hispida Pursh | rough f. |
| pulegioides (L.) Pers. | American f. |
| Helenium L. | sneezeweed |
| autumnale L. | common s. |
| nudiflorum Nutt. | purplehead s. |
| tenuifolium Nutt. | bitter s. |
| Helianthemum bicknellii Fern. | sunrose |
| Helianthus L. | sunflower |
| annuus L. (including H. lenticularis Dougl.) | common s. |
| grosseserratus Martens | sawtooth s. |
| hirsutus Raf. [H. leptocaulis (Wats.) Blake (including H. virilis Wats.)] | hairy s. |
| laetiflorus Pers. [including H. rigidus (Cass.) Desf., & H. severus Wats.] | stiff s. |
| maximiliani Schrad. | maximilian s. |
| mollis Lam. | ashy s. |
| petiolaris Nutt. | prairie s. |
| salicifolius A. Dietr. | willowleaf s. |
| tuberosus L. (including H. mollissimus E. E. Wats.) | jerusalemartichoke |
| Heliopsis helianthoides (L.) Sweet var. scabra (Dunal) Fern. | rough heliopsis |
| Heliotropium L. | heliotrope |
| convolvulaceum (Nutt.) Gray | bindweed h. |
| spathulatum Rydb. | wild h. |
| tenellum (Nutt.) Torr. | pasture h. |
| Hesperis matronalis L. | dames rocket |
| Heterotheca subaxillaris (Lam.) Britt. & Rusby | camphorweed |
| Heuchera richardsonii R. Br. var. grayana Rosend., Butt., & Lak. | alumroot |
| Hibiscus L. | hibiscus; rosemallow |
| esculentus L. | okra |
| militaris Cav. | scarlet r. |
| trionum L. | flowerofanhour |
| Hieracium longipilum Torr. | longbeard hawkweed |
| Houstonia L. | bluets |
| minima Beck | tiny b. |
| nigricans (Lam.) Fern. (H. angustifolia Michx.) | narrowleaf b. |
| Humulus lupulus L. | hop |
| Hybanthus verticillatus (Ortega) Baill. [Calceolaria verticillata (Ortega) Ktze.] | Northamerican calceolaria |
| Hydrophyllum L. | waterleaf |
| appendiculatum Michx. | notchbract w. |
| virginianum L. | Virginia w. |
| Hymenopappus L’Her. | hymenopappus |
| corymbosus T. & G. | flattop h. |
| scabiosaeus L’Her. | whitebract h. |
| tenuifolius Pursh | slimleaf h. |
| Hymenoxys Cass. (Actinea Juss., Tetraneuris Greene, Actinella Pers.) | hymenoxys |
| acaulis (Pursh) Parker [Tetraneuris a. (Pursh) Greene] | stemless h. |
| odorata DC. [Actinea o. (DC.) Ktze., & Actinella o. (DC.) Gray] | bitterweed |
| scaposa (DC.) Parker var. linearis (Nutt.) Parker (Tetraneuris fastigiata Greene) | plains h. |
| Hypericum L. | St. johnswort |
| drummondii (Grev. & Hook.) T. & G. | drummond S. |
| mutilum L. | dwarf S. |
| perforatum L. | common S. |
| punctatum Lam. | spotted S. |
| sphaerocarpum Michx. | roundfruit S. |
| Impatiens L. | snapweed |
| biflora Walt. | spotted s. |
| nortoni Rydb. | norton s. |
| pallida Nutt. | pale s. |
| Iodanthus pinnatifidus (Michx.) Steud. | purplerocket |
| Ipomoea L. | morningglory |
| batatas Lam. | sweetpotato |
| hederacea (L.) Jacq. | ivyleaf m. |
| lacunosa L. | white m. |
| leptophylla Torr. | bush m. |
| pandurata (L.) G. F. W. Mey. | bigroot m. |
| purpurea (L.) Roth | common m. |
| Isanthus brachiatus (L.) BSP. | fluxweed |
| Isopyrum biternatum (Raf.) T. & G. | Atlantic isopyrum |
| Iva L. | sumpweed |
| ciliata Willd. | seacoast s. |
| xanthifolia Nutt. | rag s. |
| Jussiaea repens L. var. glabrescens Ktze. (J. diffusa of manuals, not Forsk.) | floating waterprimrose |
| Justicia americana (L.) Vahl (Dianthera a. L.) | American dianthera |
| Kallstroemia Scop. | caltrop |
| hirsutissima Vail | hairy c. |
| intermedia Rydb. | intermediate c. |
| Kochia Roth | kochia |
| Krameria lanceolata Torr. (K. secundiflora of manuals, not DC.) | trailing krameria |
| Krigia Schreb. | dwarfdandelion |
| dandelion (L.) Nutt. [Cynthia d. (L.) DC.] | tube d. |
| occidentalis Nutt. [Cymbia o. (Nutt.) Standl.] | western d. |
| oppositifolia Raf. [Serinia o. (Raf.) Ktze.] | common d. |
| Kuhnia L. | kuhnia |
| eupatorioides L. (K. suaveolens Fresen.; K. hitchcockii A. Nels.) | falseboneset |
| Lactuca L. | lettuce |
| canadensis L. | Canada l. |
| floridana (L.) Gaertn. | Florida l. |
| ludoviciana (Nutt.) DC. | Louisiana l. |
| pulchella (Pursh) DC. | chicory l. |
| scariola L. (L. serriola L.; L. virosa of manuals, not L.) | prickly l. |
| Lamium amplexicaule L. | henbit |
| Laportea canadensis (L.) Gaud. | woodnettle |
| Lappula Moench | stickseed |
| echinata Gilib. | European s. |
| redowskii (Hornem.) Greene [L. occidentalis (S. Wats.) Greene] | flatspine s. |
| texana (Scheele) Britt. (L. heterosperma Greene) | cupseed s. |
| Lechea tenuifolia Michx. | pinweed |
| Leonurus cardiaca L. | common motherwort |
| Lepidium L. | pepperweed |
| campestre (L.) R. Br. | field p. |
| densiflorum Schrad. | peppergrass |
| perfoliatum L. | clasping p. |
| ramosissimum Nels. | manybranch p. |
| virginicum L. | Virginia p. |
| Lesquerella S. Wats. | bladderpod |
| gracilis (Hook.) S. Wats. [including L. repanda (Nutt.) S. Wats.] | spreading b. |
| ludoviciana (Nutt.) S. Wats. | Louisiana b. |
| ovalifolia Rydb. | ovalleaf b. |
| Leucelene ericoides (see Aster arenosus) | |
| Liatris Schreb. | gayfeather |
| angustifolia (Bush) Gaiser | narrowleaf g. |
| kansana (Britt.) Rydb. | Kansas g. |
| punctata Hook. | dotted g. |
| pycnostachya Michx. | thickspike g. |
| scariosa (L.) Willd. | tall g. |
| squarrosa (L.) Michx. | scaly g. |
| Linaria Mill. | toadflax |
| canadensis (L.) Dum. var. canadensis | oldfield t. |
| canadensis var. texana (Scheele) Pennell | Texas t. |
| vulgaris Hill | butter-and-eggs t. |
| Lindernia All. | falsepimpernel |
| anagallidea (Michx.) Pennell | clasping f. |
| dubia (L.) Pennell | yellowseed f. |
| Linum L. | flax |
| compactum A. Nels. | |
| lewisii Pursh [L. pratense (Norton) Small] | lewis f. |
| rigidum Pursh | stiffstem f. |
| sulcatum Riddell | grooved f. |
| usitatissimum L. | common f. |
| Lippia L. | lippia |
| cuneifolia (Torr.) Steud. | wedgeleaf fogfruit |
| lanceolata Michx. var. recognita Fern. & Grisc. | lanceleaf l. |
| Lithospermum L. | gromwell |
| arvense L. | corn g. |
| canescens (Michx.) Lehm. | hoary g. |
| incisum Lehm. (L. angustifolium Michx., & L. linearifolium Goldie) | narrowleaf g. |
| latifolium Michx. | American g. |
| Lobelia L. | lobelia |
| cardinalis L. | cardinalflower |
| siphilitica[44] L. | bigblue l. |
| spicata Lam. | palespike l. |
| splendens Willd. | western cardinalflower |
| Lomatium Raf. | lomatium |
| foeniculaceum (Nutt.) C. & R. [including L. daucifolium (Nutt.) C. & R., & L. villosum Raf.] | carrotleaf l. |
| orientale C. & R. | eastern l. |
| Lonicera L. | honeysuckle |
| Ludwigia L. | seedbox |
| alternifolia L. | bushy s. |
| palustris (L.) Ell. var. americana (DC.) Fern. & Grisc. | marsh s. |
| polycarpa Short & Peter | manyseed s. |
| Lychnis alba Mill. | white cockle |
| Lycopersicum esculentum Mill. | tomato |
| Lycopus L. | bugleweed |
| americanus Muhl. | American b. |
| asper Greene (L. lucidus Turcz.) | rough b. |
| virginicus L. | Virginia b. |
| Lygodesmia D. Don | skeletonplant |
| juncea (Pursh) D. Don | rush s. |
| rostrata Gray | beaked s. |
| Lysimachia L. (including Steironema Raf.) | loosestrife |
| ciliata L. | fringed l. |
| nummularia L. | moneywort |
| Lythrum alatum Pursh | winged lythrum |
| Machaeranthera Nees (see Aster) | |
| Macuillamia (see Bacopa) | |
| Malacothrix sonchoides (Nutt.) T. & G. | sowthistle malacothrix |
| Malva L. | mallow |
| neglecta Wallr. | common m. |
| rotundifolia L. | running m. |
| sylvestris L. | high m. |
| verticillata L. | cluster m. |
| Mamillaria Haw. (Neomamillaria Britt.) | mamillaria |
| missouriensis Sweet (including M. similis Engelm.) | Missouri m. |
| vivipara (Nutt.) Haw. [including Neomamillaria radiosa (Engelm.) Rybd.] | |
| Marrubium vulgare L. | common hoarhound |
| Martynia (see Proboscidea) | |
| Melampodium cinereum DC. (M. leucanthum T. & G.) | plains blackfoot |
| Menispermum canadense L. | common moonseed |
| Mentha arvensis L. | field mint |
| Mentzelia L. | mentzelia |
| decapetala (Pursh) Urban & Gilg | tenpetal m. |
| nuda (Pursh) T. & G. var. stricta (Osterh.) Harrington [M. stricta (Osterh.) Stevens ex Jeff. & Little] | bractless m. |
| oligosperma Nutt. | stickleaf m. |
| Microseris cuspidata (Pursh) Schultz-Bip. [Agoseris c. (Pursh) Raf.] | wavyleaf agoseris |
| Mimulus L. | monkeyflower |
| alatus Ait. | sharpwing m. |
| glabratus HBK. | roundleaf m. |
| ringens L. | Alleghany m. |
| Mirabilis L. (including Oxybaphus L’Her., & Allionia Loefl.) | four-o’clock |
| albida (Walt.) Heimerl | white f. |
| carletoni (Standl.) Standl. | carleton f. |
| hirsuta (Pursh) MacM. | hairy f. |
| linearis (Pursh) Heimerl | narrowleaf f. |
| nyctaginea (Michx.) MacM. | prairie f. |
| Mollugo verticillata L. | carpetweed |
| Monarda L. | beebalm |
| citriodora Cerv. | lemon b. |
| clinopodioides Gray | basil b. |
| fistulosa L. var. menthaefolia (Graham) Fern. (M. menthaefolia Graham) | mintleaf b. |
| fistulosa L. var. mollis (L.) Benth. (M. mollis L.) | wildbergamot b. |
| punctata L. subsp. occidentalis Epl. (M. pectinata Nutt.) | spotted b. |
| Monolepis nuttalliana (R. & S.) Greene | nuttall monolepis |
| Myosotis verna. Nutt. (M. virginica of manuals) | Virginia forgetmenot |
| Myosurus minimus L. | tiny mousetail |
| Myriophyllum L. | parrotfeather |
| heterophyllum Michx. | changeleaf p. |
| pinnatum (Walt.) BSP. | green p. |
| Nasturtium officinale R. Br. | nasturtium |
| Nelumbo lutea (Willd.) Pers. [?N. pentapetala (Walt.) Fern.] | American lotus |
| Nepeta L. (see also Glechoma) | nepeta |
| cataria L. | catnip |
| Nicotiana L. | tobacco |
| Nuphar advena (Ait.) Ait. f. | spatterdock cowlily |
| Nymphaea odorata Ait. | American waterlily |
| Oënothera L. | eveningprimrose |
| albicaulis Pursh | pale e. |
| biennis L. | common e. |
| biennis L. var. hirsutissima Gray [O. strigosa (Rydb.) Mackenz. & Bush] | bristly-common e. |
| canescens Torr. & Frem. | beakpod e. |
| coronopifolia T. & G. | combleaf e. |
| fremontii S. Wats. | fremont e. |
| hartwegii Benth. var. fendleri Gray | fendler e. |
| hookeri T. & G. | hooker e. |
| laciniata Hill | cutleaf e. |
| lavandulaefolia T. & G. | lavenderleaf e. |
| linifolia Nutt. | narrowleaf e. |
| missouriensis Sims | Missouri e. |
| rhombipetala Nutt. | fourpoint e. |
| serrulata Nutt. | serrateleaf e. |
| speciosa Nutt. | white e. |
| tetragona Roth var. latifolia (Rydb.) Fern. (Kneiffia latifolia Rydb.) | broadleaf e. |
| triloba Nutt. | stemless e. |
| Onosmodium Michx. | marbleseed |
| hispidissimum Mackenz. | rough m. |
| occidentale Mackenz. | western m. |
| Oonopsis engelmannii (see Haplapappus) | |
| Opuntia Mill. | pricklypear; cholla |
| arborescens Engelm. [O. imbricata (Haw.) DC.] | walkingstick c. |
| fragilis (Nutt.) Haw. | brittle p. |
| humifusa Raf. | common p. |
| macrorhiza Engelm. | bigroot p. |
| polyacantha Haw. | plains p. |
| tortispina Engelm. | twistspine p. |
| Oreocarya (see Cryptantha) | |
| Orobanche L. | broomrape |
| ludoviciana Nutt. | Louisiana b. |
| uniflora L. | ghostpipe |
| Osmorhiza longistylis (Torr.) DC. | longstyle sweetroot |
| Othake (see Palafoxia) | |
| Oxalis L. | oxalis |
| europaea Jord. | European yellow o. |
| stricta L. | common yellow o. |
| violacea L. | violet woodsorrel o. |
| Oxybaphus (included in Mirabilis) | |
| Palafoxia spacelata (Nutt.) Cory [Othake s. (Nutt.) Rydb.] | othake |
| Parietaria pensylvanica Muhl. | pellitory |
| Paronychia Mill. | nailwort |
| canadensis (L.) Wood [Anychia c. (L.) BSP.] | Canada n. |
| fastigiata (Raf.) Fern. (Anychia polygonoides Raf.) | forked n. |
| jamesii T. & G. | james n. |
| Parthenium integrifolium L. | parthenium |
| Pastinaca sativa L. | parsnip |
| Pectis angustifolia Torr. | pectis |
| Pedicularis canadensis L. | pedicularis |
| Penstemon Mitchell | penstemon |
| albidus Nutt. | white p. |
| ambiguus Torr. | gilia p. |
| angustifolius Nutt. ex Pursh, subsp. caudatus (Heller) Keck | narrowleaf p. |
| buckleyi Pennell | buckley p. |
| cobaea Nutt. | cobaea p. |
| digitalis Nutt. | smooth p. |
| grandiflorus Nutt. | shell-leaf p. |
| pallidus Small | pale p. |
| tubaeflorus Nutt. | tube p. |
| Penthorum sedoides L. | penthorum |
| Perideridia americana (Nutt.) Reichenb. (Eulophus a. Nutt.) | eulophus |
| Perilla frutescens (L.) Britt. | common perilla |
| Phacelia Juss. | phacelia |
| gilioides A. Brand (P. hirsuta of many SW botanists, not Nutt.) | hairy p. |
| integrifolia Torr. | gyp p. |
| Phellopterus (see Cymopterus) | |
| Phlox L. | phlox |
| bifida Beck | tenpoint p. |
| divaricata L. | sweetwilliam p. |
| paniculata L. | summer p. |
| pilosa L. | prairie p. |
| Phryma leptostachya L. | lopseed |
| Physalis L. | groundcherry |
| angulata L. | cutleaf g. |
| comata Rydb. | hillside g. |
| heterophylla Nees [including P. ambigua (Gray) Rydb.] | clammy g. |
| ixocarpa Brotero | tomatillo g. |
| lanceolata Michx. | lanceleaf g. |
| lobata Torr. [Quincula l. (Torr.) Raf.] | chineselantern |
| longifolia Nutt. | spearleaf g. |
| macrophysa Rydb. | bladder g. |
| missouriensis Mackenz. & Bush | Missouri g. |
| pendula Rydb. | purplevein g. |
| pruinosa L. | hairy g. |
| pubescens L. | downy g. |
| pumila Nutt. | prairie g. |
| rotundata Rydb. | roundleaf g. |
| subglabrata Mackenz. & Bush | taperleaf g. |
| virginiana Mill. | Virginia g. |
| Physostegia Benth. | lionsheart |
| intermedia (Nutt.) Engelm. & Gray | intermediate l. |
| virginiana (L.) Benth. | Virginia l. |
| Phytolacca americana L. (P. decandra L.) | common pokeberry |
| Picradeniopsis (see Bahia) | |
| Pilea pumila (L.) A. Gray | clearweed |
| Plantago L. | plantain |
| aristata Michx. | bottlebrush p. |
| lanceolata L. | buckhorn p.[45] |
| purshii R. & S. | woolly p. |
| pusilla Nutt. (P. elongata of manuals, not Pursh) | slender p. |
| rhodosperma Dcne. | redseed p. |
| rugelii Dcne. | blackseed p. |
| spinulosa Dcne. | brittlebract p. |
| virginica L. | paleseed p. |
| Podophyllum peltatum L. | common mayapple |
| Polanisia trachysperma T. & G. | roughseed clammyweed |
| Polemonium reptans L. | creeping polemonium |
| Polygala L. | polygala |
| alba Nutt. | white p. |
| incarnata L. | |
| sanguinea L. (including P. viridescens L.) | blood p. |
| verticillata L. | whorled p. |
| Polygonum L. (see also Tovara) | knotweed; smartweed |
| aviculare L. (including P. buxiforme Small) | prostrate k. |
| coccineum Muhl. | swamp s. |
| convolvulus L. | climbing-buckwheat |
| erectum L. | erect k. |
| hydropiper L. | marshpepper s. |
| hydropiperoides Michx. | swamp s. |
| lapathifolium L. (including P. tomentosum of manuals) | curltop s. |
| longistylum Small | longstyle s. |
| pensylvanicum L. (including P. omissum Greene) | Pennsylvania s. |
| persicaria L. | ladysthumb s. |
| persicarioides HBK. | southwest s. |
| punctatum Ell. | dotted s. |
| ramosissimum Michx. | bushy k. |
| tenue Michx. | slim k. |
| Polytaenia nuttalii DC. | polytaenia |
| Portulaca L. | portulaca; purslane |
| oleracea L. | common purslane |
| parvula Gray | slenderleaf purslane |
| Potentilla L. | cinquefoil |
| arguta Pursh | clammy c. |
| norvegica L. | Norwegian c. |
| paradoxa Nutt. | bushy c. |
| rivalis Nutt. | brook c. |
| simplex Michx. (P. canadensis of manuals, not L.) | oldfield c. |
| sulfurea Lam. | |
| Prenanthes aspera Michx. | rough rattlesnakeroot |
| Prionopsis ciliata (see Haplopappus ciliatus) | |
| Proboscidea louisianica (Mill.) Thell. (Martynia l. Mill.) | common devilsclaw |
| Prunella vulgaris L. var. lanceolata (Bart.) Fern. | common selfheal |
| Psilostrophe villosa Rydb. | paperflower |
| Ptilimnium nuttallii (DC.) Brit. | mockbishopweed |
| Ptiloria (see Stephanomeria) | |
| Pycnanthemum Michx. | mountainmint |
| flexuosum (Walt.) BSP. | slender m. |
| pilosum Nutt. | woods m. |
| Pyrrhopappus DC. | falsedandelion |
| carolinianus (Walt.) DC. | Carolina f. |
| scaposus DC. (P. grandiflorus Nutt.) | tuber f. |
| Quincula (see Physalis) | |
| Ranunculus L. | buttercup; crowfoot |
| abortivus L. | littleleaf b. |
| acris L. | tall b. |
| cymbalaria Pursh | shore b. |
| fascicularis Muhl. | tufted b. |
| flabellaris Raf. | threadleaf b. |
| hispidus Michx. | bristly b. |
| longirostris Godr. | longbeak b. |
| sceleratus L. | cursed c. |
| Raphanus L. | radish |
| Ratibida Raf. | prairieconeflower |
| columnifera (Nutt.) Woot. & Standl. | upright p. |
| pinnata (Vent.) Barnh. | grayhead p. |
| tagetes (James) Barnh. | shortray p. |
| Rheum L. | rhubarb |
| Ricinus communis L. | castorbean |
| Rorippa Scop. (see also Armoracia) | yellowcress; marshcress |
| islandica (Oeder) Borbas [including R. hispida (DC.) Britt. & R. palustris (L.) Bess.] | bog y. |
| sessiliflora (Nutt.) Hitchc. | stalkless y. |
| sinuata (Nutt.) Hitchc. | spreading y. |
| Rotala ramosior (L.) Koehne var. interior Fern. & Grisc. | rotala |
| Rudbeckia L. (see also Dracopis) | coneflower |
| grandiflora (D. Don) Gmel. | rough c. |
| hirta L. | blackeyedsusan |
| laciniata L. | cutleaf c. |
| subtomentosa Pursh | sweet c. |
| triloba L. | browneyedsusan |
| Ruellia L. | ruellia |
| humilis Nutt. (R. ciliosa of manuals, in part; | |
| R. caroliniensis of manuals, in part) | fringeleaf r. |
| strepens L. | limestone r. |
| Rumex L. | dock; sorrel |
| acetosella L. | red s. |
| altissimus Wood | pale d. |
| crispus L. | curled d. |
| hastatulus Baldw. | heartwing s. |
| maritimus L. var. fueginus (Phil.) Dusen (R. persicarioides of manuals, not L.) | golden d. |
| obtusifolius L. | bitter d. |
| patientia L. | patience d. |
| venosus Pursh | veiny d. |
| Sabatia[46] campestris Nutt. | prairie rosegentian |
| Sagina decumbens (Ell.) T. & G. | trailing pearlwort |
| Salsola kali L. (S. pestifer Nels.) | russianthistle |
| Salvia L. | sage |
| azurea Lam. var. grandiflora Benth. (S. pitcheri Torr.) | pitcher s. |
| officinalis L. | garden s. |
| reflexa Hornem. (including S. lanceolata Willd., & S. lanceafolia of authors, not Poir.) | lanceleaf s. |
| Samolus parviflorus Raf. | samolus |
| Sanguinaria canadensis L. | bloodroot |
| Sanicula L. | sanicle |
| canadensis L. | Canada s. |
| gregaria Bickn. | cluster s. |
| marilandica L. | black s. |
| Saponaria L. | soapwort |
| officinalis L. | bouncingbet |
| vaccaria L. (Vaccaria vulgaris Host) | cow s. |
| Scrophularia L. | figwort |
| lanceolata Pursh | lanceleaf f. |
| marilandica L. | Maryland f. |
| Scutellaria L. | skullcap |
| incana Biehler | hoary s. |
| lateriflora L. | sideflowering s. |
| ovata Hill | eggleaf s. |
| parvula Michx. var. australis Fassett [S. australis (Fassett) Epling] | southern-small s. |
| parvula Michx. var. leonardi (Epling) Fern. (S. leonardi Epling) | leonard-small s. |
| parvula Michx. var. parvula | small s. |
| resinosa Torr. | resinous s. |
| Sedum L. | stonecrop |
| Selenia aurea Nutt. | golden selenia |
| Senecio L. | groundsel |
| aureus L. | golden g. |
| integerrimus Nutt. | lambstongue g. |
| obovatus Muhl. | roundleaf g. |
| plattensis Nutt. | prairie g. |
| riddellii T. & G. | riddell g. |
| tridenticulatus Rydb. | |
| Sesamum indicum L. | sesame |
| Sicyos angulatus L. | burcucumber |
| Sida spinosa L. | prickly sida |
| Sideranthus (see Haplopappus) | |
| Silene L. | silene |
| antirrhina L. | sleepy s. (sleepy catchfly) |
| cucubalus Wibel [S. latifolia (Mill.) Britten & Rendle, S. vulgaris (Moench) Garcke, & S. inflata Sm.] | cowbell s. |
| noctiflora L. | nightflowering s. |
| stellata (L.) Ait. f. | starry s. |
| Silphium L. | rosinweed |
| integrifolium Michx. (including S. speciosum Nutt.) | wholeleaf r. |
| laciniatum L. | compassplant |
| perfoliatum L. | cup r. |
| Sisymbrium L. | sisymbrium |
| altissimum L. | tumblemustard |
| officinale (L.) Scop. | hedgemustard |
| Solanum L. | nightshade |
| carolinense L. | horsenettle |
| elaeagnifolium Cav. | silverleaf n. |
| nigrum L. | black n. |
| rostratum Dunal | buffalobur n. |
| torreyi Gray | torrey n. |
| triflorum Nutt. | cutleaf n. |
| tuberosum L. | potato |
| Solidago L. | goldenrod |
| altissima L. (including some Kansas specimens called S. dumetorum Lunell) | tall g. |
| angusta T. & G. (S. lindheimeriana Scheele) | |
| canadensis L. | Canada g. |
| gigantea Ait. (including S. serotina Ait.) | November g. |
| graminifolia (L.) Salisb. [Euthamia g. (L.) Nutt.] | grassleaf g. |
| gymnospermoides (Greene) Fern. (Euthamia g. Greene) | sticky g. |
| missouriensis Nutt. (including S. glaberrima Martens & S. moritura Steele) | Missouri g. |
| mollis Bartl. | ashy g. |
| nemoralis Ait. | dyersweed g. |
| petiolaris Ait. | downy g. |
| pruinosa Greene (including some Kansas specimens called S. dumetorum Lunell) | |
| rigida L. | stiff g. |
| sparsiflora Gray (S. trinervata Greene) | threenerve g. |
| speciosa Nutt. var. rigidiuscula T. & G. [S. rigidiuscula (T. & G.) Porter] | showywand g. |
| speciosa Nutt. var. speciosa | noble g. |
| ulmifolia Muhl. | elmleaf g. |
| Sonchus L. | sowthistle |
| arvensis L. | perennial s. |
| asper (L.) Hill | prickly s. |
| oleraceus L. | common s. |
| Specularia Fabricius | venuslookingglass |
| biflora (R. & P.) Fisch. & Mey. | small v. |
| leptocarpa (Nutt.) Gray | slimpod v. |
| perfoliata (L.) A. DC. | clasping v. |
| Spermolepis Raf. | spermolepis |
| divaricata (Walt) Britt. | forked s. |
| inermis (Nutt.) Math. & Const. [S. patens (Nutt.) Robins.] | spreading s. |
| Sphaeralcea St. Hil. | globemallow |
| angusta (Gray) Fern. | |
| angustifolia (Cav.) Don var. cuspidata Gray (S. cuspidata of manuals) | narrowleaf g. |
| coccinea (Pursh) Rydb. | scarlet g. |
| Stachys tenuifolia Willd. | slenderleaf betony |
| Stanleya pinnata (Pursh) Britt. | desert princesplume |
| Steironema (included in Lysimachia) | |
| Stellaria media (L.) Cyrillo | chickweed |
| Stenosiphon linifolius (Nutt.) Britt. | stenosiphon |
| Stephanomeria pauciflora (Torr.) A. Nels. [Ptiloria p. (Torr.) Raf.] | wirelettuce |
| Stillingia sylvatica L. var. salicifolia Torr. [S. salicifolia (Torr.) Raf.] | stillingia |
| Striga lutea Lour. | witchweed |
| Suaeda depressa (Pursh) S. Wats. [including S. erecta (Wats.) A. Nels.] | pursh seepweed (seablite) |
| Taenidia integerrima (L.) Drude | yellow taenidia |
| Talinum Adans. | fameflower |
| calycinum Engelm. | rockpink f. |
| parviflorum Nutt. | prairie f. |
| Tanacetum vulgare L. | common tansy |
| Taraxacum Zinn | dandelion |
| laevigatum (Willd.) DC. (T. erythrospermum Andrz.) | smooth d. |
| officinale Weber (T. vulgare Lam.) | common d. |
| Teucrium L. | germander |
| canadense L. var. virginicum (L.) Eat. | American g. |
| laciniatum Torr. | cutleaf g. |
| occidentale Gray | hairy g. |
| Thalictrum dasycarpum Fisch. & Lall. | purple meadowrue |
| Thaspium Nutt. | thaspium |
| barbinode (Michx.) Nutt. | hairyjoint t. |
| trifoliatum (L.) Gray | threeleaf t. |
| Thelesperma Less. | greenthread |
| gracile (Torr.) Gray | slender g. |
| trifidum (Poir.) Britt. | threecleft g. |
| Thlaspi arvense L. | pennycress |
| Tidestromia lanuginosa (Nutt.) Standl. | woolly tidestromia |
| Tithymalus (see Euphorbia) | |
| Tomanthera (see Gerardia) | |
| Tovara virginiana (L.) Raf. (Polygonum v. L.) | Virginia tovara |
| Townsendia sericea Hook. [T. exscapa (Rich.) Porter] | stemless townsendia |
| Tragia urticifolia Michx. (T. nepetaefolia of manuals, not Cav., including T. ramosa of manuals, not Torr.) | nettleleaf noseburn |
| Tragopogon L. | salsify |
| dubius Scop. (T. major Jacq.) | western s. |
| porrifolius L. | vegetable-oyster s. |
| pratensis L. | meadow s. |
| Tribulus terrestris L. | puncturevine |
| Triosteum L. | horsegentian |
| aurantiacum Bickn. | orange h. |
| perfoliatum L. | common h. |
| Urtica procera Muhl. | tall nettle |
| Utricularia vulgaris L. | common bladderwort |
| Vaccaria (see Saponaria) | |
| Valerianella radiata (L.) Dufr. | cornsalad |
| Verbascum L. | mullein |
| blattaria L. | moth m. |
| thapsus L. | flannel m. |
| Verbena L. | verbena |
| bipinnatifida Nutt. | Dakota v. |
| bracteata Lag. & Rodr. | bigbract v. |
| canadensis (L.) Britt. | rose v. |
| hastata L. | blue v. |
| simplex Lehm. | narrowleaf v. |
| stricta Vent. | woolly v. |
| urticifolia L. | white v. |
| Verbesina L. | crownbeard |
| alternifolia (L.) Britt. [Actinomeris a. (L.) DC.] | wingstem |
| encelioides (Cav.) B. & H. (Ximenesia e. Cav.) | golden c. |
| virginica L. | white c. |
| Vernonia Schreb. | ironweed |
| baldwini Torr. var. baldwini | baldwin i. |
| baldwini Torr. var. interior (Small) Schub. | inland i. |
| crinita Raf. | bur i. |
| marginata (Torr.) Raf. | plains i. |
| Veronica L. | speedwell |
| arvensis L. | common s. |
| peregrina L. | purslane s. |
| polita Fries (V. didyma Ten.) | wayside s. |
| salina Schur. (V. connata of manuals) | cupleaf s. |
| serpyllifolia L. | thymeleaf s. |
| Veronicastrum virginicum (L.) Farw. | culversphysic |
| Viola L. | violet |
| eriocarpa Schw. | woolpod v. |
| kitaibeliana R. & S. var. rafinesquii (Greene) Fern. (V. rafinesquii Greene) | johnnyjumpup |
| missouriensis Greene | Missouri v. |
| nuttallii Pursh | nuttall v. |
| papilionacea Pursh | butterfly v. |
| pedata L. | birdsfoot v. |
| pedatifida G. Don | prairie v. |
| sororia Willd. | sister v. |
| Xanthium strumarium L. (including X. chinense Mill., X. globosum Shull, X. italicum Moretti, X. pensylvanicum Wallr., and X. speciosum Kearney) | cocklebur |
| Ximenesia (see Verbesina) | |
| Zinnia grandiflora Nutt. | Rocky Mountain zinnia |
| Zizia aurea (L.) W. D. J. Koch | golden zizia |
FOOTNOTES:
[43] Asclepiodora is included in Asclepias in some manuals.
[44] From Gray: spelled syphilitica in some manuals.