344 THE PLANT PHYLA 
Family 95. Erysiphaceae. Superficial parasites upon 
higher plants—Erysiphe, Micro- 
sphaera, Uncinula, Podosphaera. 
Family 96. Perisporiaceae; 97, Microthyriaceae. 
Order AsPERGILLALES. Little Tubers. Common fungi; 
spore-fruits minute or small, mostly 
not subterranean. 
Family 98. Gymnoascaceae. Loose hyphae, central- 
ly ascigerous.—Gymnoascus. 
Family 99. Aspergillaceae. Spheroidal, parenchy- 
matous, sessile——Aspergillus, Penicil- 
lium. 
Family 100. Onygenaceae; 101, Trichocomataceae; 
102, Elaphomycetaceae. 
Family 103. Terfeziaceae. Spore-fruits subterranean 
resembling small Tubers.—Terfezia. 
Order HemtascaLes. Common fungi; no apothecia; asci 
single, scattered. 
Family 104. Ascoideaceae; 105, Protomycetaceae. 
Family 106. Saccharomycetaceae. Yeast fungi, asci 
early isolated.—Saccharomyces. 
Order TuBrrALes. Tubers. Common fungi; spore-fruits 
large, tuberous, subterranean, fleshy, 
internally ascigerous. 
Family 107. Tuberaceae. Eventually opening.— 
Tuber. 
Family 108. Balsamiaceae. Not opening.—Balsamia. 
Class 16. BASIDIOSPOREAE. Basidium Fungi. Spore-fruits . 
containing one or more’ basidia with 
basidiospores. (Sp. about 14,000.) 
Order HyMENOGASTRALES. False Tubers. Spore-fruits 
large, tuberous, subterranean, fleshy, 
with internal hymenium. Sapro- 
phytes. 
Family 109. Hymenogastraceae. Resembling Tuber- 
aceae.—Hysterangium, Hymenogas- 
ter, Octaviana, Rhizopogon. 
Order ScLERODERMATALES. Hard | puff-balls. Spore- 
fruits small to large, roundish, event- 
ually pulverulent. Saprophytes. 
