250 NATURAL HISTORY BULLETIN. 



f — Spores fusiform, -I- or more celled, 



hyaline; saprophytic . . Patellaria 



e — Spores long, thread-like, 

 f — Receptacle sessile. 



g — Spores rod-like, 4-6 celled. . Pragmorpora 



g — Spores thread-like, many celled Scutularia 

 f — Receptacle top-shaped, stipitate Lahmia 



d — Spores thread-like, many celled, break- 

 ing into single cells in the ascus . Dactrospora 

 b — Asci many spored. 



c — vSpores spherical, 1-celled . . . Biatorella 



c — Tpores elongate, 4-celled . . . Baggea 



CEN ANGIACK.lv 



A — Receptacles when fresh leathery, horny, or waxy, 

 b — At first immersed, stroma not present. 

 c — Spores 1-celled. 



d — Receptacles bright-colored outside, downy / 'clutaria 

 d — Receptacles dark-colored outside. 



e — Spores hyaline; receptacle smooth out- 

 side ...... Cenangium 



e — vSpores colored ; receptacle externally 



downy ..... Schweinitzia 



c — Spores elongate J- (celled, 

 d — Spores hyaline. 



e — Spores always 2-celled; receptacle ex- 

 ternally smooth .... Cenangella 



e — Spores 2 or 4-celled; receptacle ex- 

 ternally downy .... Crumenula 



d — Spores when mature brown to brownish- 

 black. 



e — Receptacle elongate, with thick rind. Tryblidiella 

 e — Receptacle roundish. 



f — Spores 2-celled; margin thin . Pseudotryblidium 



f — Spores 4-celled ; margin of receptacle 



involute . . . . . Rhytidopeziza 



c — Spores thread-like, many celled . . Godronia 



b — Receptacle seated on a more or less well de- 

 veloped stroma; at first under the bark. 

 c — Spores 8 in the ascus, not germinating in 



ascus ...... Derm at ea 



c — Spores sprouting in the ascus, ascus filled 



with conidia ..... Tympanis 



A — Receptacle in fresh condition gelatinous. 



b — Receptacle sessile or stipitate, smooth and 

 cup-shaped, 

 c — Spores 1-celled. 



