484 TORTJLACEl, 



1441. Sporidesmium antiquum. Cor da. " Compact 



Sporidesmium." 



Tnfts black, tomentose, very broad, irregularly expanded; 

 spores congested, joined, in fascicles, erect, polymorphous, cellu- 

 lose ; bypbasma rooting, brancbed, filamentous, cellulose, 

 brownisb. — Cor da. iii./. 11. B. ^ Br. Ann. N.H. no. 453. 



var. p. compactum. B. ^- Br. Ann. N. H. no. 453. 

 On hard wood. Wraxall. 



More compact than the typical form as figured by Corda, and composed of 



smaller cells. 



1442. Sporidesmium pyriforme. Corda. "Pear-shaped 



Sporidesmium." 



Effused, black ; spores obovate, at first septate, then cellulose, 

 brown, semi-pellucid, 2-4 celled ; peduncle hyaline, colourless, 

 short or elongated, and filiform, flaccid. — Corda. i.f. 116. B. ^ 

 Br. Ann. N.H. no. 454. 



On decayed boards. July. Shropshire. 

 It forms a thick crust-like stratum. 



1443. Sporidesmium melanopum. B.^Br. "Black-patch 



Sporidesmium." 



Spores subgloljose, supported by a cellular base, forming a 

 stratum with the crowded tufts. — Ann. N.H. no. 455. Spiloma 

 melanopum, Ach. Jleth. t. i.f. 3. Eng. Bot. ('2nd ed.), t. 2358. 



On bark of apple trees. Common. [Up. Carolina.] 



Forming broad black patches, made np of many smaller spots, spores sub- 

 globose, very opaque, apparently simple, but really composed of numerous 

 cells, supported by a cellular base, which varies much in length and breadth. 



1444. Sporidesm.ium scutellare. B.cfBr. "Scutellate 



Sporidesmium." 



Sori scutelbTform ; spores broadly obovate, cellular ; supported 

 by a short cellular base. — B. 4' Br. Ann. N.H. no. 456. 



On larch bark. 



Sori scattered, minute, scuteIli''orm ; spores obovate, evidently cellular, 

 springincr from a cellular stnma, and supported by a few variously arranged 

 cells, which are sometimes reduced to merely one. — B.d:Br. 



1443. Sporidesmium lepraria. B.SfBr. "Black 



Sporidesmium." 



Spots effused, very black; spores irregular, without any dis- 

 tinct base.— 5er/j. HooJ:. Journ. 1853,/). 43. t. 3,f. 9. Berk. Intr. 



