MTCEDIXES. 



611 



Sporotrichum geochrooi. Eng. FLt. p. S4,Q, is the codI- 

 diiferous condition of some Hr/poxylon. — M.J.B. 



1837. Spoxotxichum fenestrale. Bitm, "Window-glass 



Sporotrichum." 



Tufted, very minute; flocci much branched, centrifugal, decum- 

 bent, septate, whitish; spores globose, dingy. — Ditm.Sturm.ui.t.l. 

 On glass. Common. 



Gen. 243. ZTGODESMUS, Corda. 



Flocci short, erect, 

 springing from the creep- 

 ing sterile threads ; joints 

 ^ here and there cut half 



\S..,}\~~Z^^^^^^^:^^^^ ^^7 through. — Berk. Outl. 



^^^:=^^-^^^=^==^^^ ^^^=nr:^ ^_ 352. (Fig. 278.) 



Fig. 2/8. 



1838. Zygodeszuus fuscus. Corda. " Brown Zygodesmus." 



Crustaceous, effused, velvety, brown ; flocci branched, septate, 

 clear brown, sporidiferous, ramuli erect, short ; spores globose, 

 aculeate, yellow-brown. — Corda. i\.f. 81. Curr. Micr. Journ.y. 

 J9, 127,^viii./. 41. ' 



On decayed wood and fallen branches. [United States.] 



Easily recognised by tlie reddish -brown color of the filaments, and by the 

 echinulate spores. — Curr. 



Gen. 244. 



VIRGAIIZA, Nees. 



Flocci erect, dichotomous, virgate, black, 

 septate ; spores minute, scattered over the 

 branches. — Berk. Outl. p. 852. 



[Fig. 279.) 



1839. Vixgaxia nigxa. Fr. " Black 



Virgaria." 



Flocci erect, dichotomously virgate, black, 

 attenuated at their apices ; spores globose, 

 of the same colour. — Nees. f. 52. Sporo- 

 trichum nigrum, Eng. Fl. Y.p. 346. Botrytis 

 nigra, Grev. t. 274. 



On dead trunks, &c. {Fig. 279.) 



Fig. 279. 



