APPENDIX. 



ANALYTICAL KEYS. 



By the Author. 



CLASS FUNGI. 



SUB-CLASS BASIDIOMYCETES.* 



Plants of large or medium size ; fleshy, membranaceous, leathery, woody or 

 gelatinous ; growing on the ground, on wood or decaying organic matter ; usu- 

 ally saprophytic, more rarely parasitic. Fruiting surface, or hymenium, formed 

 of numerous crowded perpendicular basidia, the apex of the latter bearing two to 

 six (usually four) basidiospores, or the basidiospores borne laterally ; in many 

 cases cystidia intermingled with the basidia. Hymenium either free at the begin- 

 ning, or enclosed either permanently or temporarily in a more or less perfect peri- 

 dium or veil. Basidiospores continuous or rarely septate, globose, obovoid, ellip- 

 soidal to oblong, smooth or roughened, hyaline or colored, borne singly at the 

 apex of sterigmata. 



Order Gasteromycetes. Plants membranaceous, leathery or fleshy, furnished 

 with a peridium and gleba, the latter being sometimes supported on a receptacle. 

 Hymenium on the surface of the gleba which is enclosed within the peridium up 

 to the maturity of the spores or longer ; spores continuous, sphaeroid or ellipsoid, 

 hyaline or colored. Puff-balls, etc. 



Order Hymenomycetes. Hymenium, at the beginning, borne on the free outer 

 surface of the compound sporophore, or if at first enclosed by a pseudo-peridium 

 or veil it soon becomes exposed before the maturity of the spores ; mushrooms, etc. 



HYMENOMYCETES. 



Analytical Key of the Families. 



Plants not gelatinous ; basidia continuous i 



Plants gelatinous or sub-gelatinous, basidia forked, or di- 

 vided longitudinally or transversely 4 



1 Hymenium uneven, i.e., in the form of radiating plates, or 

 folds ; or a honey-combed surface, or reticulate, warty, 

 spiny, etc 2 



* The sub-class Ascomycetes includes the morels, helvellas, cup fungi, etc., and 

 many microscopic forms, in which the spores are borne inside a club-shaped body, 

 the ascus. Only a few of the genera are described in this book, and the technical 

 diagnosis will be omitted. See page 216. 



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