Fam IV. THELEPHORACEAE. 
Craterellus. Fleshy or membranaceous, often funnel-shaped or cup¬ 
like. 
Thelephora. Leathery, pileate or resupinate, hymenium even or nearly 
so, not cracked on drying. 
Stereum. Leathery or woody, persistent; hymenium even, smooth, 
underlaid by an intermediate fibrous stratum. 
Hymenochaete. Like the last; but the hymenium bears bristles. 
Corticium. Resupinate, reflexed; hymenium somewhat waxy, with no 
intermediate layer, usually cracked when dry. 
Peniophora. Leathery or somewhat fleshy; hymenium velvety with 
exserted, hyaline, cellular processes. 
Coniophora. Membranaceous, resupinate ; hymenium fleshy, pulveru¬ 
lent with minute colored spores. 
Michenera. Resupinate, attached at the middle; hymenium waxy, 
covered with large, lemonshaped, stalked spores. 
Hypochnus. Floccose-collapsing, or like a mould and resupinate; 
4-spored basidia on long lax hyphae. 
Exobasidium. Parasitic on living plants, waxy, often misshapen. 
Cyphella. Sub-membranaceous, cup-shaped, often pendulous ; hyme¬ 
nium typically concave or discoid. 
Fam V. CLAVARIACEAE. 
Sparassis. Fleshy, much branched; branches flattened, foliaceous, 
fertile on both sides. 
Acurtis. Fibrous-fleshy, divided into clavate branches, which split; 
spores mealy. 
Clavaria. Fleshy, branched or simple; branches typically rounded, 
smooth, not splitting. 
Calocera. Cartilaginous-gelatinous, horny when dry, simple or 
branched. 
Lachnocladium. Leathery, branched, tomentose. 
Pterula. Coriaceous or cartilaginous, dry, simple or branched, fili¬ 
form, compressed, glabrous, no distinct stem. 
Typhula. Somewhat waxy, simple, club-shaped, filiform-stipitrd 
Pistillaria. Waxy then horny, stiff, linear or somewhat club-shaped - 
sub-capitate ; head stuffed, stem short or wanting. 
Physalacria. Waxy-rigid, capitate; head sub-globose, hollov 
walled ; stem slender, round, smooth, discrete. 
Fam. VI. TREMELLACEAE. 
Characterized by a gelatinous collapsing substance. Only a few of the 
genera are given here, for the distinctive characters, often microscopic, 
are hardly susceptible of brief systematic treatment. 
Auricularia Leathery, like Stereum; hymenium netted or ribbed. 
Hirneola. Membranaceous, usually cup-shaped or ear-shaped; when 
dry, cartilaginous and almost diaphanous; hymenium even or plicate. 
Exidia. Cup-shaped, truncate, or effuse, often papillose. 
Tremella. Pulvinate or effuse, brain-like or mesenteriform. 
Naematelia. Like the last, but with a hard fleshy nucleus. 
Tremellodon. Like a Hydnum, but gelatinous. 
