APPENDIX A.
CLASSIFICATION & DESCRIPTIONS OF FUNGI CONTAINED IN THIS VOLUME.
ÆCIDIACEI.
| Peridium elongated— | |
| separating in threads | Rœstelia. |
| rupturing irregularly | Peridermium. |
| Peridium abbreviated, or semi-immersed | Æcidium. |
| Peridium immersed | Endophyllum. |
Rœstelia, Reb.
Peridium elongated, at length opening by lateral fissures, or a terminal lacerated mouth. Spermogonia on the opposite surface, on the same or on different leaves.
Rœstelia cancellata, Reb. Pear-leaf Rœstelia; spots yellow, then red, prominent; peridia split to the base into laciniæ, which remain united at the apex.—On Pear leaves. Not very common. Autumn. ([Plate II.] figs. 20, 21.)
Rœstelia cornuta, Tul. Horn-like Rœstelia; spots rusty-brown; peridia cylindrical, slightly curved, yellowish-brown; spores greyish, at length brown.—On the under surface of the leaves of Mountain-Ash. Not common. August. ([Plate II.] figs. 18, 19.)
Rœstelia lacerata, Tul. Lacerated Rœstelia; peridia clustered in tufts, brown, elongated, splitting to the base in segments; spores light brown.—On the under surface of the leaves, and on the petioles and fruit of the Hawthorn. Not uncommon. May to July. ([Plate II.] figs. 22, 26.)
Peridermium, Chev.
Peridium elongated, at length bursting irregularly. Spermogonia scattered, conspicuous.
Peridermium Pini, Chev.; peridia oblong, scattered, large; spores orange, abundant; spermogonia vernal or autumnal, or both; spermatia large, white.—On leaves and young branches of Scotch Fir. Common in Scotland, occasional in England. Summer. ([Plate II.] figs. 27, 28.)
Peridermium elatinum, Lk.; simple, immersed; peridia elliptic, pallid; sporidia orange.—On Silver Fir, altering both foliage and ramification. Not common.
Æcidium, Pers.
Peridium seldom elongated, opening by a terminal mouth, surrounded by a fringe of recurved teeth, or when short bursting irregularly. Spores disposed in chains. Spermogonia on the same or the opposite surface, clustered or scattered, central or intermixed.
Sect. I.—Peridia scattered (not collected in tufts or clusters).
Æcidium leucospermum, DC. White-spored Cluster-Cups; spots yellowish; peridia scattered, often covering the whole under surface; spores white, ovate.—On both sides of the leaves of the wood-anemone. Common. June. ([Plate I.] figs. 4-6.)
Æcidium quadrifidum, DC. Four-lobed Cluster-Cups; spots brownish; peridia scattered, occupying almost the entire under surface; spores brown, subglobose.—On the under side of leaves of Anemone in gardens. (Lobes at the mouth of the peridium not constantly four.) April to May.
Æcidium albescens, Grev. Moschatel Cluster-Cups; leaf blistered, whitish, scattered; peridia white, split into a few large teeth; spores yellowish-white.—On leaves and petioles of Adoxa moschatellina. Not uncommon. April.
Æcidium Epilobii, DC. Willow-herb Cluster-Cups; spots obliterated; peridia scattered, at length oval, wider above; spores orange, at length brown.—On the under side of leaves of Epilobium montanum, E. hirsutum, and E. palustre, rarely on the upper. Common. June to August.
Æcidium Thesii, Desv. Bastard-toadflax Cluster-Cups; spots obliterated; peridia scattered or biseriate; short, cylindrical, margin irregularly toothed, erect; spores yellowish, then dingy.—On Thesium humifusum. Downs near Winchester. July, 1864. Chipstead, Surrey, Oct. 14, 1864. ([Plate III.] figs. 50, 51.)
Æcidium Soldanellæ, Hornsch. Soldanella Cluster-Cups; spots obliterated; peridia solitary, scattered over the inferior surface; spores orange.—On the under surface of the leaves of Soldanella alpina.
Æcidium Tragopogonis, Pers. Goatsbeard Cluster-Cups; spots obliterated; peridia scattered, torn, wider above; spores orange, at length black.—On stems, leaves, and involucres of common Goatsbeard. Very common. May to June. ([Plate I.] figs. 1-3.)
Æcidium Euphorbiæ, Pers. Spurge Cluster-Cups; spots obliterated, leaf thickened; peridia scattered or crowded, distinct; spores orange.—On the under surface of the leaves of Spurge. Common. May to June.
Sect. II. Peridia in tufts or clusters.
α. Elongatæ.
Æcidium Berberidis, Pers. Berberry Cluster-Cups; spots roundish, bright red; subiculum thickened; peridia in subrotund or oval patches, often elongated; spores orange.—On leaves, peduncles, and fruit of the common Berberry. Common. May to July. ([Plate I.] figs. 7-9.)
Æcidium Thalictri, Grev. Meadow-Rue Cluster-Cups; collected in roundish clusters; peridia oblong; spores bright orange.—On Thalictrum alpinum. Not uncommon in Scotland.
Æcidium crassum, Pers. Buckthorn Cluster-Cups; spots yellow-brown, subiculum thickened; peridia crowded into a roundish heap, at first globose, yellow, at length open; spores orange.—On Rhamnus catharticus and R. frangula. Common.
Æcidium Periclymeni, DC. Honeysuckle Cluster-Cups; spots variegated, yellow and brown, subiculum thickened; peridia sometimes elongated, in roundish or effused heaps; spores orange.—On the under surface of Honeysuckle leaves. Not common. June to August.
β. Poculiformæ.
Æcidium Calthæ. Grev. Marsh-Marigold Cluster-Cups; aggregate; peridia somewhat campanulate, with numerous minute marginal teeth; spores bright orange, subglobose or oval.—On leaves and petioles of Caltha palustris. Margin of peridia pale and brittle. Rare. Spring.
Æcidium Ranunculacearum, DC. Crowfoot Cluster-Cups; spots obliterated, subiculum thickened; peridia in irregular heaps, densely crowded together; spores orange.—On leaves of various Ranunculaceæ; very common on R. Ficaria, not uncommon on R. repens, more rarely on R. acris and R. bulbosus. Spring. ([Plate II.] figs. 12-14.)
Æcidium Galii, Pers. Bedstraw Cluster-Cups; spots linear or oblong, obscurely brown; peridia scattered, rarely aggregate, dentate, whitish; spores white.—On the leaves of Galium verum and G. mollugo. ([Plate II.] figs. 15-17.)
I am doubtful whether the Æcidium on Galium mollugo is really this species.—(M. C. C.)
Æcidium Bunii, DC. Pig-nut Cluster-Cups; spots obliterated, subiculum thickened; peridia in irregular subrotund or oval heaps; spores orange.—On Bunium bulbocastanum and Pimpinella saxifraga. Spring.
Æcidium Valerianacearum, Dub. Valerian Cluster-Cups; hypogenous, rarely cauline, spots on a thickened subcircular or oblong base; peridia scattered, more or less crowded, cup-shaped, tawny, margin erect, denticulate; spores dirty-yellow.—On Valeriana officinalis and V. dioica. North Britain.
Æcidium Asperifolii, Pers. Borage Cluster-Cups; clusters subrotund, on a slightly thickened subiculum; peridia scattered; spores yellowish-white.—On leaves of various Boragineæ. Summer. The parts of the leaves on which it occurs are rendered concave on one side and convex on the other.
Æcidium Grossulariæ, DC. Gooseberry Cluster-Cups; spots yellow, bright red on the opposite side, with a yellow border; peridia crowded in roundish heaps, at length brown, and surrounded with a brown area; spores orange.—On leaves and fruit of Gooseberry and Currant. Common. May to June.
Æcidium Urticæ, DC. Nettle Cluster-Cups; spots obliterated, subiculum thickened; peridia disposed in elongated or subrotund heaps, at first subglobose, then gaping; spores orange.—On leaves and stems of Nettles, distorting them very much. Common. June. ([Plate I.] figs. 10, 11.)
Æcidium Behenis, DC. Bladder-Campion Cluster-Cups; spots yellow, brown on opposite side; peridia somewhat circinating, in subrotund heaps; spores brown.—On Silene inflata. Not common. Some of the peridia are short and open, others larger and closed.
Æcidium Orobi, DC. Bitter-Vetch Cluster-Cups; spots yellow, effused; peridia scattered and disposed in small heaps; spores at length white.—On stems and leaves of Orobus tuberosus. Scotland.
γ. Subimmersæ.
Æcidium Compositarum, Mart. Composite Cluster-Cups; spots purplish, subrotund, confluent above; peridia crowded, in orbicular patches, or circinating, on the under surface; spores orange, oval.
Var. a. Taraxaci, Grev.; clusters small, scattered.—On leaves of the Dandelion. June to July.
Var. b. Prenanthis, Pers.; spots circular or irregular, purplish; subiculum incrassated.—On leaves of Hawkweed (Hieracium paludosum). Summer.
Var. c. Tussilaginis, Pers.; clusters round, on a thickened base; peridia circinating.—On the under surface of leaves of Coltsfoot and Butter-bur. Common. Autumn.
Var. d. Jacobæa, Grev.; pustular, soon becoming agglomerated, numerous, depressed; peridia splitting into short, brittle, yellowish-white teeth.—On leaves of Senecio Jacobæa and Sonchus arvensis. June to August.
Var. e. Lapsani, Purt.; spots purplish, irregular, confluent, on both sides of the leaves; peridia amphigenous, in irregular patches or scattered, not prominent, teeth numerous, minute, reflexed; spores yellow, oval.—On both surfaces of the leaves of Lapsana communis. April. Not uncommon.
Æcidium Saniculæ, Carm. Sanicle Cluster-Cups; spots purplish, slightly incrassated, small, scattered, roundish; peridia in small circulate clusters, hypogenous, and on the petioles, at first hemispherical, at length open, margin with from 4 to 6 spreading lobes; spores yellowish, elliptical.—On the under surface of the leaves and on the petioles of Sanicula Europæa. Not uncommon. May and June.
Æcidium Violæ, Schum. Violet Cluster-Cups; spots yellowish; peridia in irregular heaps, seriate and scattered; spores orange, at length brown.—On leaves, petioles, and sepals of Violets. Common. May and June.
Æcidium Poterii, Cooke. Burnet Cluster-Cups; spots obliterated, clusters subrotund or elongated; peridia hypogenous and on the petioles, circinating or scattered, immersed, margin irregularly fringed with numerous minute teeth, soon falling away; spores yellowish, oval.—On the under surface of the leaflets and on the petioles of Poterium Sanguisorba. Rare. May and June. Dartford Brent, Kent.
Æcidium Geranii, DC. Cranesbill Cluster-Cups; spots yellow and purple; peridia in circinating clusters; spores yellow, at length brown.—On the under surface of leaves of Geranium pratense and G. dissectum. Not common.
Æcidium Menthæ, DC. Mint Cluster-Cups; spots obliterated; subiculum thickened; peridia scattered, emersed, or aggregate immersed; spores orange, elliptic.—On various Mints. Common.
Æcidium Scrophulariæ, DC. Figwort Cluster-Cups; spots yellowish; peridia in roundish circinate clusters (rarely scattered) on the under surface; spores whitish, becoming tawny.—On the leaves of Scrophularia aquatica. Thame and Sydenham, Oxon.
Æcidium Pedicularis, Lobosch. Red-rattle Cluster-Cups; spots obliterated, subiculum thickened; peridia thickly and irregularly clustered, subimmersed; spores dirty, pallid orange.—On petioles, leaves, and stems of Pedicularis palustris. Not common.
Æcidium Primulæ, DC. Primrose Cluster-Cups; spots obliterated; peridia solitary, scattered, and crowded, hypogenous; spores whitish-yellow.—On the under surface of leaves of Primroses. Not common. May.
Æcidium rubellum, Pers. Dock Cluster-Cups; spots purple; peridia circinating, centre free; spores yellowish-white.—On leaves of Dock and Sorrel. Not uncommon in moist localities. May and June.
Æcidium Ari, Berk. Wake-robin Cluster-Cups; spots round, confluent; peridia circinating, not crowded, central ones abortive.—On leaves of Arum maculatum. Not common. June and July.
Æcidium Dracontii, Schwein. Arum Cluster-Cups; spots pallid, extensively scattered over the leaves, sometimes nearly covering them; peridia large, scattered, abundant, disposed without order on the spots; spores orange.—On Arum triphyllum, in gardens. Melbury, 1863 (Rev. M. J. B.) A North American species.
Æcidium Allii, Grev. Garlic Cluster-Cups; spots pale; peridia circinating, not contiguous; spores yellowish.—On leaves of broad-leaved Garlic (Allium ursinum). June and July.
Endophyllum, Lév.
Peridium enclosed within the substance of the leaf, bursting irregularly.
Endophyllum Sempervivi, Lév.; peridia immersed, elliptic or roundish; spores ochraceous, becoming brownish.—On leaves of Houseleek.