30 Cha,rles E. Bcssey 



Family 91. Dichaenaceae. Apothecia at first sunken, later 

 erumpent, leathery, black, elongated, or round ; bark-saprophytes. 

 Diachcna. (Pf. 1, i, 270.) 



Family 92. Ostropaceae. Apothecia at first deeply sunken, later 

 somewhat erumpent, leathery, black, roundish ; saprophytes. Os- 

 tropa. (Pf. I, I, 271.) 



Family 93. Hysteriaceae. Apothecia sessile, narrowly elon- 

 gated to broad, and even lobed, black, carbonaceous or leathery; 

 saprophytes. Hystcrhim^ Hysterographium. (Pf. 1, i, 272.) 



Family 94. Acrospermaceae. Apothecia sessile, erect clavate, 

 corneous, brown, spores very long, filamentous; saprophytes. 

 Acrospermum. (Pf. I, i, 2yy.) 



Order Tuberales. True fungi, saprophytic, with a branching 

 filamentous, generally subterranean mycelium; spore-fruits tuber- 

 ous, subterranean, fleshy, containing asci in definite cavities or 

 layers. 



Family 95. Tuberaceae. Spore-fruits with spore-bearing cav- 

 ities open to the exterior by rifts or slits in the tissue and rind. 

 Tuber. (Pf. I, i, 281.) 



Family 96. Balsamiaceae. Spore-fruits with spore-bearing cav- 

 ities not open to the exterior. Balsamia. (Pf. I, i, 288.) 



Order Aspergillales. True fungi, saprophytic, with an abun- 

 dant branching mycelium which grows superficially, or penetrates 

 the substratum, and eventually bears the small, mostly spherical, 

 fleshy spore-fruits. 



Family 97. Gymnoascaceae. Spore-fruits usually mere loose 

 .masses of hyphae with asci in the center. Gymnoascns. (Pf. I, 

 1,293.) 



Family 98. Aspergillaceae. Spore-fruits spheroidal, parenchy- 

 matous, with a definite peridium, sessile, not subterranean, open- 

 ing irregularly. Aspergillus^ Penicillium, Meliola. (Pf. I, i, 

 297.) 



Family 99. Onygenaceae. Spore-fruits spheroidal, parenchy- 

 matous, with a definite peridium, stalked, not subterranean. Ony- 

 gena. (Pf. I, i, 309.) 



Family 100. Trichocomataceae. Spore-fruits cylindrical, erect, 

 with a peridium, sessile, not subterranean. Trichocoma. (Pf. 

 T, I, 310.) 



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