IOWA DISCOMYCETES g3 



LACHXEA Pers., Mye. Eu. 1 : 244. 1S22. 



Plants fleshy or subfleshy. cup-shaped or plane, externally 

 clothed with a covering of sharp, rigid or soft, flexuose haii"s 

 which are usually brown but often hyaline: asci cylindrical or 

 clavate. usually S-spored: spores elliptical to fusiform, hyaline; 

 paraphyses present slender or clavate. 



The genus is distinguished from Peziza by the presence of the 

 hairs with which the cups are clothed. The forms with hyaline 

 hairs are sometimes placed in a separate genus, Xeotiella. 



Eleven species of the genus are here described one of which 

 has hyaline hairs. Probably many more occur in the state. 



KEY TO THE SPECIES. 



Hairs hyaHne L. lojkoeana. 



Hairs colored, pale to dark brown. 

 Hymenium white or whitish. 



Plants large, more than 2 mm. in diameter. 



Plants 2 to 3 cm., spores spinnlose. ... X. hemispherica. 

 Plants less than 1 cm., spores smooth. . . L. alio-spadicea. 

 Plants smaU. less than 2 mm. in diameter. 



Spores tuberculose L. paludosa. 



Spores smooth L. abundans. 



Hvmenium red or yellow. 



Plants 1 cm. in diameter, hairs short. 

 Plants red. hairs rigid. 



Spores smooth or scarcely roughened. . L. scutellata. 



Spores spinulose L. hirta. 



Plants pale yellow, hairs flexuose. ... X. aurantiopsis. 

 Plants 1 to 5 mm. in diameter. 



On dung, hairs often stellate L. stercorea. 



On rotten wood, hairs not stellate. . . L. setosa. 



On burnt groun<i L. melaloma. 



Lachxea lq.jk.t'.axa Kehm. Rabenh. Kr\'pt. Fl. 13 : 1045. 1S96. 

 Plate S. f. II. 



Peziza (Sarcoscypha) Uiteo-pallens Cooke. ^lycogr. 85. 

 Xeotfiella luteopallens Sacc. SyU. Fung. S : 191. 1889. 



Cups, sessile, at first hemispherical, then expanded, pale 

 orange. 4 to 5 mm. in diameter, externally clothed with hyaline, 

 septate hairs, which are often more or less rigid : asci cylindrical . 



