344 THE PLANT PHYLA 



Family 95. Erysiphaceae. Superficial parasites upon 

 higher plants. — Erysiphe, Micro- 

 sphaera, Uncinula, Podosphaera. 



Family 96. Perisporiaceae; 97, Microthyriaceae. 

 Order Aspbegillales. 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 Hemiascales. Common fungi; no apothecia; asci 

 single, scattered. 



Family 104. Ascoideaceae; 105, Protomycetaceae. 



Family 106. Saccharomycetaceae. Yeast fimgi, asci 

 early isolated. — Saccharomyces. 

 Order Tubebales. 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 Hymbnogastrales. 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 Scleeodermatales. Hard puff-balls. Spore- 

 fruits small to large, roundish, event- 

 ually pulverulent. Saprophytes. 



