=Eurotium herbariorum=, Lk. HERBARIUM MOULD; perithecium spherical, sub-depressed, yellow, seated upon radiating expanded, branched, intricate flocci.—On plants in herbaria, and various decaying substances. Very common. (Plate XII. figs. 260, 261.) ------------------------------------------------------------------------ APPENDIX B. ------- The following species, belonging to those sections of Microscopic Fungi which are included in this volume, have been found in Britain since the publication of the preceding Appendix:— =Peridermium columnare=, Alb. and Schw. Simple, slender, naked, cylindrical, elongated, lacerated at the apex, white; sporidia orange.—On _Picea_. Watcombe, near Torquay. September, 1867. (_E. Parfitt._) * * * * * =Æcidium Orchidearum=, Fiedl. ORCHIS CLUSTER-CUP; spots large, pallid, orbicular or elongated; peridia circinating, semi-immersed; spores golden-yellow.—On _Orchis latifolia_. Dilham, Norfolk. June, 1866. * * * * * =Puccinia discoidearum=, Link. SOUTHERNWOOD BRAND; spots obliterated; sori subrotund, minute, surrounded by the ruptured epidermis; sporidia brown, oblong or ovoid, somewhat rhomboidal, with both cells attenuated, and triangular; peduncles elongated.—On _Artemisia maritima_. Swanscombe Marshes. 1865. =Puccinia Virgaureæ=, Lib. GOLDEN-ROD BRAND; spots orbicular, pallid, then yellowish; sori blackish-brown, minute, punctiform, shining, clustered, nearly stellate, convex; sporidia oblong, subconstricted, yellowish-brown above, attenuated and yellowish-white below; peduncles short.—On leaves of _Solidago virgaurea_. Shere, Surrey. July and August, 1865. (_Dr. Capron._) =Puccinia difformis=, Kunze. GOOSEGRASS BRAND; spots yellowish; sori variable, compact, often in rings; epidermis bullate; sporidia obovate, obtuse, on short pedicels, brown.—On leaves of _Galium aparine_. July, 1866. Shere and Darenth Usually occurring on or near spots previously occupied by _Æcidium_. =Puccinia Apii=, Corda. CELERY BRAND; sori large, confluent, red-brown, powdery; spores oblong, constricted, brown; epispore smooth, thick; pedicels short, attenuated.—On leaves of Celery. Autumn, 1866, 1867. =Puccinia Asari=, Kunze. ASARABACCA BRAND; spots obliterated; sori small, subglobose, crowded or circinating, ultimately confluent, surrounded by the ruptured epidermis, usually forming a large, roundish, convex, pulverulent mass; sporidia brown, elliptic, constricted.—On leaves of _Asarum Europæum_. Bettws-y-coed, N. Wales. July, 1866.