O Obclavate. Inverted club-shape. Obcordate. Inverted heart-shaped. Oblanceolate. Lanceolate but tapering toward the base more than toward the apex. Oblong. Longer than broad with nearly parallel sides. Obovate. Ovate with the broader end toward the apex. Obovoid. Solid obovate with the broader end toward the apex. Obpyramidal. Inversely pyramidal. Obtuse. Blunt or rounded at the apex. Operculate. Furnished with a lid. Orbicular. A flat body circular in outline. Orthotropous. Descriptive of an ovule with a straight axis much enlarged at the insertion and the orifice at the other end. Oval. Broad-elliptic, with round ends. Ovate. Of the shape of the longitudinal section of a hen’s egg, with the broad end basal. Ovoid. Solid ovate or solid oval. Ovule. The part of the flower which becomes a seed.
P Palmate. Lobed or divided, with the sinuses pointing to or reaching the apex of the petiole or insertion. Panicle. A loose compound flower-cluster. Papilionaceous. Butterfly-like. Papilliform. The shape of papillæ. Papillate. Bearing papillæ, minute nipple-shaped papillose projections. Parietal placenta. A placenta borne on the wall of the ovary. Pedicel. The stalk of a flower in a compound inflorescence. Pedicellate. Borne on a pedicel. Peduncle. A general flower-stalk supporting either a cluster of flowers, or a solitary flower. Pedunculate. Borne on a peduncle. Peltate. Descriptive of a plane body attached by its lower surface to the stalk. Penniveined. Same as pinnately veined. Perfect. Said of a flower with both stamens and pistil. Perianth. The envelope of a flower consisting of calyx, corolla, or both. Pericarp. The fructified ovary. Persistent. Said of leaves remaining on the branches over their first winter, and of a calyx remaining under or on the fruit. Petal. A division of the corolla. Petiolate. Having a petiole. Petiole. The footstalk of a leaf. Petiolulate. Having a petiolule. Petiolule. The footstalk of a leaflet. Pilose. Hairy, with soft and distinct hairs. Pinnæ. The primary divisions of a twice pinnate leaf. Pinnate. A leaf with leaflets arranged along each side of a common petiole. Pistil. The female organ of a flower, consisting of ovary, style, and stigma. Pistillate. Said of a unisexual flower without fertile stamens. Pith. The central cellular part of a stem. Placenta. That part of the ovary which bears the ovules. Plane. Used in describing a flat surface. Plumule. The bud or growing part of the embryo. Pollen. The fecundating cells contained in the anther. Polygamodiœcious. Said of flowers sometimes perfect and sometimes unisexual, the 2 forms borne on different individuals. Polygamomonœcious. Said of flowers sometimes perfect and sometimes unisexual, the 2 forms borne on the same individual. Polygamous. Said of flowers sometimes perfect and sometimes unisexual. Pome. An inferior fruit of 2 or several carpels inclosed in thick flesh. Posterior. The side of an axillary flower next the axis of inflorescence. Prickle. Outgrowth of the bark. Proliferous. Bearing offshoots. Puberulent. Very slightly pubescent. Puberulous. Minutely pubescent. Pubescence. A covering of short soft hairs. Pubescent. Clothed with soft short hairs. Pulvinate. Cushion-shaped. Punctate. Dotted with depressions or translucent internal glands, or with colored dots. Punctulate. Minutely punctate.
R Raceme. An indeterminate or centripetal inflorescence with an elongated axis and flowers on pedicels of equal length. Rachis. The axis of a spike or of a compound leaf. Radial. Belonging to a ray. Radicle. The initial stem in an embryo. Raphe. The adnate cord or ridge connecting the hilum with the chalaza in an anatropous ovule. Receptacle. The axile portion of a blossom bearing sepals, petals, stamens, and pistils; the axis or rachis of the head, spike, or other flower-cluster. Reniform. Kidney-shaped. Resupinate. Upside down. Reticulate. Netted. Retrorse. Directed backward or downward. Retuse. With a shallow notch at a rounded apex. Revolute. Rolled backward from the margins or apex. Rhombic. Having the shape of a rhomb. Rhomboidal. Approaching a rhombic outline; quadrangular with lateral angles obtuse. Rind. The bark of some endogenous stems, like that of Palms. Rostrate. Narrowed into a slender tip. Rotate. Circular, flat and horizontally spreading. Rugose. Wrinkled. Rugulose. Slightly wrinkled. Ruminate. Looking as if chewed, like the albumen of the nutmeg.
S Sagittate. Shaped like an arrowhead. Samara. An indehiscent winged fruit. Sapwood. The young living wood of an exogenous stem. Scales. Thin scarious bodies, usually degenerate leaves. Scarious. Thin, dry and membranaceous, not green. Scobiform. Having the appearance of sawdust. Scorpioid. A form of unilateral inflorescence circinately coiled in the bud. Scurfy. Covered with small bran-like scales. Seed. The fertilized and mature ovule, the result of sexual reproduction in a flowering plant. Segment. One of the divisions into which a leaf, calyx, or corolla may be divided. Semianatropous. Same as amphitropous. Sepals. The divisions of a calyx. Septicidal. Descriptive of a capsule splitting through the lines of junction of the carpels. Septum. A partition. Serrate. Beset with teeth. Serrulate. Serrate with small fine teeth. Sessile. Without a stalk. Setose. Beset with bristles. Setulose. Beset with minute bristles. Sheath. A tubular or enrolled part or organ. Sinistrorse. Turned or directed to the left. Sinus. A recess between the lobes of a leaf. Spatulate. Oblong with the lower end attenuated. Spike. An indeterminate inflorescence with flowers sessile on an elongated common axis. Spine. A sharp-pointed woody body, commonly a modified branch or stipule. Spinescent. Ending in a spine. Spinose. Furnished with spines. Stamen. One of the male organs of a flower. Staminate. Said of unisexual flowers without pistils. Staminodium. A sterile or much reduced stamen. Stigma. The part or surface of a pistil which receives the pollen for the fecundation of the ovules. Stigmatic. Relating to the stigma. Stipe. A stalk-like support of a pistil or of a carpel. Stipel. An appendage to a leaflet analogous to the stipules of a leaf. Stipellate. Having stipels. Stipitate. Having a stipe. Stipulate. Having stipules. Stipules. Appendages of a leaf, placed on one side of the petiole at its insertion with the stem. Stomata. Breathing pores or apertures in the epidermis of leaves connecting internal cavities with the external air. Stomatiferous. Furnished with stomata. Stone. The hard endocarp of a drupe. Strobile. The same as cone. Strophiolate. Said of a seed bearing a strophiole or appendage at the hilum. Style. The attenuated portion of a pistil between the ovary and the stigma. Subcordate. Slightly cordate. Subulate. Awl-shaped. Sulcate. Grooved or furrowed. Superior. Growing or placed above; also in a lateral flower for the side next the axis. Suture. A junction, usually a line of opening of a carpel. Syncarp. A multiple fruit.
T Taproot. The primary descending root, a direct continuation from the radicle. Tegmen. The inner coat of a seed. Testa. The outer seed-coat. Thyrsoidal. Relating to a thrysus. Thyrsus. A mixed inflorescence with the main axis indeterminate and the secondary or ultimate cluster cymose. Tomentose. Densely pubescent with matted wool or tomentum. Tomentulose. Slightly pubescent with matted wool. Torose. Cylindric, with contractions or bulges at intervals. Torulose. Slightly torose. Torus. The receptacle of a flower. Transverse. Horizontal. Trichotomous. Three-forked. Trifoliate. Three-leaved. Trifoliolate. Descriptive of leaves, with 3 leaflets. Truncate. As if cut off at the end. Tubercle. A small tuber or excrescence. Tuberculate. Beset with knobby excrescences. Turbinate. Top-shaped. Turgid. Swollen.
U Umbel. An inflorescence with numerous pedicels springing from the same point like the rays of an umbrella. Umbilicus. The hilum of a seed. Umbo. A boss or protuberance. Umbonate. Bearing an umbo. Uncinate. Hooked, bent, or curved at the tip in the form of a hook. Unequally pinnate. Pinnate, with an odd terminal leaflet. Unguiculate. Contracted at the base into a claw or stalk. Unisexual. Said of flowers with either the stamens or pistil 0 or abortive. Urceolate. Hollow and contracted at or below the mouth like an urn or pitcher. Utricle. A small bladdery pericarp.
V Valvate. Said of a bud in which the parts meet without overlapping. Valve. One of the pieces into which a capsule splits. Veinlet. One of the ultimate or smaller ramifications of a vein. Veins. Ramifications or threads of fibro-vascular tissue in a leaf or other flat organ. Ventral. Belonging to the anterior or inner face of a carpel. Ventricose. Swelling unequally or inflated on one side. Vernation. The disposition of parts in a leaf-bud. Verrucose. Covered with wart-like elevations. Versatile. Said of an anther turning freely on its filament. Verticillate. Arranged in a circle or whorl round an axis. Villose. Hairy, with long and soft hairs.
W Whorl. An arrangement of branches or leaves in a circle round an axis. Wood. The hard part of a stem mainly composed of wood-cells, wood fibre, or tissue.
INDEX
[[A]] [[B]] [[C]] [[D]] [[E]] [[F]] [[G]] [[H]] [[I]] [J] [[K]] [[L]] [[M]] [[N]] [[O]] [[P]] [[Q]] [[R]] [[S]] [[T]] [[U]] [[V]] [[W]] [[X]] [[Y]] [[Z]]