GYMNOASCUS ASCODESMIS. 19 



quoted above, gives an exhaustive account of the life-history 

 of G. EeesiL 



Gymnoascus Reesii. Baran., Bot. Ztg., 1872, p. 145, 

 pi. iii. A ; Sacc., Syll., viii. n. 3367. (fig. 45, p. 12.) 



Growing in pulviuate tufts up to 1 mm. across, at first 

 white, then straw-colour, finally orange-yellow ; hyphae 

 abundantly branched, often anastomosing, interwoven, sep- 

 tate, yellowish ; asci borne in clusters on the hyphae, obo- 

 vate or piriform, shortly stipitate, 8-spored, 8-10 p. diameter ; 

 spores broadly elliptical or almost globose, smooth, con- 

 tinuous, 4-5 x 3-3 5 ^ ; pale brown at maturity. 



On dung of horse, sheep, &c. 



Gymnoascus ruber. Yan Tiegh., Bull. Soc. Bot. 

 France, 1877, p. 159 ; Sacc., Syll., viii. n. 3368. 



Forming pulvinate tufts about 1 mm. across, sometimes 

 becoming confluent, rather compact, blackish-red ; hyphae 

 irregularly branched, interwoven ; asci subglobose, 8-spored, 

 10-12 p. diameter; spores subglobose, 4 '5-5 '5 p.. 



Growing on dung of dog, mouse, &c. 



ASCODESMIS. Van Tiegh. (fig. 46, p. 12.) 



Ascophore almost obsolete ; asci 8-spored, accompanied by 

 paraphyses, springing here and there in dense clusters and 

 forming a disc-like surface, from the effused mycelium ; spores 

 elliptical or globose. 



Ascodesmis, Van Tieghem, Bull. S6c. Bot. France, 1876, 

 p. 271 ; Sacc., Syll., viii. p. 824. 



Distinguished among the Gymnoascaceae by the presence 

 of paraphyses, and also by the asci being closely packed in 

 radiating fascicles somewhat as in the lowest types of the 

 Ascoboleae, to which group the present genus forms a transi- 

 tion. 



Ascodesmis nigricans. Van Tieghem, Bull. Soc. Bot. 

 France, 1876, p. 271 ; Zukal, Denkschr. der Mathematisch- 

 Naturwis. Classe der Kaiserl. Akad. der Wissensch., Bande li., 

 1885, p. 7, taf. 2; Sacc., Syll., viii. n. 3374. (fig. 46, 

 p. 12.) 



