THE DISCOMYCETES OF EASTERN IOWA. 



249 



CuuniACE.-iJ 



A — Spores 1 -celled. 



b — On wood or bark . 



b — On lichens . 

 A — vSpores 2-celled. 



b — On wood or bark . 



b — On lichens . 

 A — Spores 4-6-celled ; on lichens 



„ I x yi in in 

 Phacopsis 



Lecideopsis 



Coni da 

 Ciiidiiiui 



PATELLARIACK.lv 



A — Apothecium thin; hypothecium poorly developed, 

 b — Spores hyaline. 



c — Spores 1- often at last 2-celled . . Patellea 



c — Spores septate, 4-6-celled . . . Durella 



b — Spores brown, 2-celled .... Caldesia 



A — Apothecium thick; hypothecium well developed, 

 b — Asci 8-spored. 



c — Spores 1- or 2-celled. 

 d — Spores at last 1 -celled. 



e — Paraphyses not thickened above . Starlncckia 



e — Paraphyses club-shaped at their apices, 

 f — Receptacle from the first on the sur- 

 face ; saprophytic . . . Patinclla 

 f — Receptacle at first immersed, erum- 



pent; parasitic . . . Nesolcchia 



d — Spores 2-celled. 



e — Receptacle smooth. 



f — Spores hyaline . . . Scutu/a 



f — Spores hyaline then brown, seldom 

 brownish. 



g — Receptacle free, sessile, rarely 

 slightly immersed; saprophytic, 

 h — Receptacle round . . Karschia 



h — Receptacle elongate or irregular Melaspilea 

 h — Receptacle linear or stellately 



branched . . . HysteropatcIIa 



g — Receptacle at first immersed then 



erumpent; parasitic . . Abrothallus 



e — Receptacle hairy ; on living leaves fo/iaiisoma 



c — Spores needle-shaped or thread-like, 4 to 

 many celled. 



d — vSpores not breaking into single cells in 

 the ascus. 

 e — Spores fusiform or elongate. 



f — Spores elliptic, mostly 4- (6 or 8) 

 celled hyaline then brown; mostly 

 parasitic ..... Leciograplia 



