4:80 



TOEULACEI. 



1430. Bactridium atro vixens, .ff. " Black-green Bactridium." 



Flocci forked, pellucid ; spores lanceolate, 1-2 septate, dark- 

 green. — Eng. Fl. y.p. 350. 



On stumps. Winter. Apethorpe. 



Forming a thin, dark, black-green, minutely granulated stratum; flocci 

 white, so slender and transparent as to be seen only with some diflaculty - 

 spores lanceolate, with one or more, frequently two, septa.— J/. J.B. ' 



Gen. 153. 



KELZCOSPORIUIH. Nees. 



Parasitical ; spores fili- 

 form, articulated, spirally 

 involute. — Berk. Outl.pp. 

 326. Er)g. i^/. V. ^p. 335. 

 {Fig. 189.) 



Fig. 189. 



1431. Helicosporium vegetum. Nees. " Oak Helicosporium." 



Flocci black ; distant, subulate, spores pale greenish, spiral, 

 septate, pellucid. — Nees. f. 69. Berh. Ann. N.H, no. 229. KL 

 exs, no. 1433. Corda. Sturm. 1. 16. 



On decayed oak branches, &c. Rockingham Forest. 



{Fig. 189.) 



1432. Helicospojrium pulvinatuzn. Fr. * Pulvinate Helicos- 



porium." 



Threads cfespitoso-pulyinate, veiy slender, branched, septate 

 at their apices; spores yellow green. — Fr. S.M.iii.p. 354. Eng, 

 FL V. p. 335. Helicotrichum pulvinatum. Nees.f. 15. 



var. p. efFusum. Effused, very thin, spores whitish. — 

 Berk. Eng. Fl. Y.p. 335. 



On old chips, &c. 



Forming a very thin black stratum, following the inequalities of the wood; 

 flocci branched; branches patent, articulated ; articulations about as long as 

 broad; apices pointed, pellucid, terminated by the minute closely involute, 

 extremely fugacious spores, which consist of about three volutions, and as 

 many articulations, volutions at first so close that the spores appear globose, 

 and their true nature might easily be overlooked.— i/. /. B. 



