DIPLOSPORIUM TRICHOTHECIUM. 337 



Tricoiltcciitm, Link, sp. pi. Fungi, i. p. 28; Sacc., Syll., iv. 

 p. 178. 



Trichoth6cir.nl roseum. Link. (fig. 14, p. 274.) 



Tufts minutely velvety, rather large, often becoming 

 confluent, at fiist white then pale rose-coloured; fertile 

 hyphae erect, short, without septa ; conidia pyriform, slightly 

 constricted at the septum, attached obliquely to the narrow 

 apex of the cunidiophore, 12-18 x 8-12 p., pale rose or almost 

 colourless. 



TricJtotJiecium roseum, Link, Obs. Mycol., i. p. 16, f. 27 ; 

 Sacc., Syll., iv. n. 881. 



Dactylium roseum, Berk. 



On bark, leaves, fruit, paper, cheese, dung, &c. 



Trichothecium candidum. Wallr. 



Tufts roundish, often confluent, minutely velvety, white ; 

 fertile hyphae erect, septate, 150 x 3 /x; conidia solitary, 

 elliptic-oblong, apiculate at the base, two-celled, slightly 

 conflicted at the septum, colourless, 20-25 x 10-15 /*. 



Trichotherium candidum, Wallr., Fl. Crypt., n. 1879 ; Sacc., 

 Syll., n. 883. 



On bark and decaying vegetable substances. 



Care must be taken not to mistake bleached states of T. 

 roseum for the present species. 



Trichothecium obovatum. Sacc. 



White, forming exceedingly minute tufts; fertile hyphae 

 very slender, without septa ; conidia colourless, obovate, 

 two-celled, not constricted at the septum, solitary or in pairs 

 at the tips of the conidiophores, 14-17 X 10 /A. 



Tricltothecium obovatum, Sacc., Syll., n. 884. 



Dactylium cbocatum, Berk., Ann. IS'at. Hist., n. 242, t. 14, 

 f. 20. 



On willow branches, springing from the exolcte perithecia 

 of a Sphaeria. 



Trichothecium piriferum. Sacc. 



Tufts, minute, white, often becoming confluent and 

 forming effused, minutely velvety patches; fertile hyphae 

 aggregate, sparingly branched above; conidia obovate, two- 

 celled, terminal cell largest, not constricted at the septum, 

 colourless, 20-25 X 10-12 /*. 



VOL. III. Z 



