12 



CONIOPHORA. Plants membranaceous, resupinate; hymenium fleshy or waxy, 

 but at maturity dusted with the smooth colored spores. 



CORTICIUM. Resupinate, or with the margin reflexed ; hymenium soft, some- 

 what waxy, often craclcing when dried. On wood, etc. 



ASTEROSTROMA. Resupinate, eflfused; hymenium on a dry fibrillose subiculum 

 which is intermixed with stellate brown hyphae. (Certain species should 

 be sought in Corticium and Hymenochaete. See Massee, Men Thel). 

 aa) Spores septate. 



HETEROBASIDIUM. Resupinate effused, on a dry compact subiculum ; basidia 



one or two-spored ; spores slightly colored. (Intermediate between Hy- 



phomycetes and Basidiomycetes). 



A*) Plants small, somewhat cup or bell shaped, or placentiform, or concave, 



sessile, erect or pendulous, but membranaceous and thin ; sometimes 



lateral, and stalked. 



MICHNERA. Placentiform, resupinate, cup-shaped (sometimes closed at first) 

 hymenium waxy ; spores large, pedicellate. 



MATULA. (See foot note Sacc. Syll. VI, 653). 



CYPHELLA. Very thin, cup shaped, rarely flat, often pendulose, bell-shaped or 



lateral (typically concave hymenium). 

 Friesula. Waxy or leathery, nearly orbicular, flattened; stipe lateral ; hymenium 



beneath. 



A=) Plants forming a thin layer of interwoven hyphae ; basidia not forming a 

 definite compact hymenium. 



Aureobasidium. Very thin, formed of intricately woven branched hyphae; ba- 

 sidia bearing several-many sterigmata ; spores cyHndrical. 



Urobasidium. Arachnoid, thin; hyphae creeping, branched, occasionally bearing 

 basidia; basidia obpyriform, curved-rostrate, bearing two lateral sterigmata. 



HYPOCHNUS. Resupinate, floccose, collapsing or mould like, basidia four- 

 spored on long lax hyphae. (Approaches Zygodesmus among the Hypho- 

 mycetes). 



A«) Plants parasitic on leaves and stems (also flowers); mycelium in the tissues; 

 hymenium well formed by basidia which emerge. 



EXOBASIDIUM. Afl'ected portions of host covered with a bloom formed by the 



numerous basidia and septate spores. 

 A') Plants with the upper sterile surface possessing mucus bearing cystidia. 



Gloiocephala. Plants small, pileus disk form, stipitate ; hymenium beneath ; 

 basidia bne-spored. (Mass:e Grev. XXI, p. 33). 



2. HymenoHchenes Mattirola : Pileus bearing gonida. 



Cora. Plants leathery, membranaceous ; hymenium beneath, somewhat waxy, 

 furnished with sarciniform gonidia. 



Rhipodonema. Plants leathery, membranaceous, hymenium below, subgelatin- 

 ous, bearing gonidia in chains. 



