792 



SPH^EIACEI. 



On horse and cow dung. 



Gregarious ^-1 in. high, at first covered with a powdery veil, which at 

 length vanishes and leaves the outer portion of the plant blackish, the disc 

 being still white, but dotted with the orifices of the perithecia, which, from 

 the depression of the cup, are often rather convergent than divergent.— 

 M.J.B. Sporidia ( 0008--0012 in.), •02--03 m.m. 



Gen. 341. 



Fig. S77. 



THAMNOMYCES, Ehr. 



Stem shrubby or simple ; 

 perithecia of the same sub- 

 stance as the stem. 



{Fig. ^11.) 



2380. Thanniomyces 



hippotrichioides. Ehrh. 

 " Horsehair Thamnomyces." 



Branched, thread shaped; 

 perithecia scattered, papil- 

 late ; sporidia ovate, tmequal, 

 dark brown. — Berk. Outl.p. 

 385. FcJd. exs. no. 2268. 

 Eng. Fix. p. 284. Ehr. Hor. 



Phy.p. 82. Sphceria hippotrichioides, Mag. Zool. ^ Bot. no. 94. 

 Sow. t. 200. Hypox. loculiferwn^ Bull. 1. 195,/. 1. Uhizomorpha. 

 Fckl. Sym. Myc.p. 237. 



On old sacks, matting, &c. 



The perithecia are either sessile or shortly pedicellate, clothed with a close 

 indistinct tomentum, varying in shape from globose to ovate, with a dis- 

 tinct, very obtuse, papillseform ostiolum. (Fig. 377.) 



Gen. 342. 



Fig. 378. 



USTULINA, Tul. 



Stroma expanded, pulverulent, 

 becoming indurated and carbonized ; 

 perithecia immersed; sporidia uni- 

 seriate, lanceolate, curved, simple, 

 dark coloured. — Tul. Carp. \\.p. 23. 



{Fig. 378.) 



2381. Ustulina vulgaris. Tul. 



*' Common Ustulina." 



Effused, thick, undulato-rugose, 

 when young cinereous or whitish 

 pulverulent, at length rigid ; peri- 

 thecia ovate, with a short neck ; 



