490 FUNGUS-FLORA. 



MYBOTHECIUM. Tode. (fig. 3, p. 442.) 



Sporodochium shield-like or discoid, black, margin white 

 ciliated, cilia slender, hyaline ; conidia minute, elliptical or 

 cylindrical ; conidiophores slender, cylindrical. 



Myrothecium, Tode, Meckl., i. p. 25, in part ; Sacc., Syll., 

 iv. p. 750. 



Forming small, flattened black patches bounded by a 

 white ciliate margin. 



Myrothecium roridum. Tode. 



Sporodochia flattened, discoid, at length confluent and 

 irregular, black with a white margin, 26 mm. diameter; 

 conidiophores simple or branched ; conidia cylindrical, ends 

 obtuse, 8-12 X 2 /x, pale olive. 



Myrothecium roridum, Tode, Meckl., i. p. 25, t, v. f. 38; 

 Sacc., Syll., iv. n. 3550. 



On various decaying vegetable substances. 



Myrothecium hmndatum. Tode. (fig. 3, p. 442.) 

 Sporodochium disc-like, variable in form, disc plane, 

 blackish-olive, with a white margin ; conidia broadly ellip- 

 tical, 3-4 x 1 ' 5-2 p,, olive ; conidiophores filiform, fasciculate, 

 hyaline, 40 x 1 ft. 



Myrothecium inundatum, Tode, Meckl., p. 25 ; Sacc., Syll., iv. 

 n. 3552. 



On decaying species of Agaricus, Cortinarius, and other 

 fungi. 



Sect. 2. Phragmosporae. Sacc. 

 EXOSPORIUM. Link. (fig. 1, p. 442.) 



Sphorodochium convex, compact; conidiophores simple, 

 densely fasciculate, blackish, bearing at their tips the oblong 

 or terete pluriseptate conidia. 



Exosporium, Link, Berlin Mag., iii. p. 9 ; Sacc., Syll., iv. 

 p. 755. 



Distinguished by the coloured pluriseptate conidia. The 

 genus resembles species of Helminthosporium springing from 

 a stroma. 



