182 Jf asscc and Crossland : New British Diseoniyeeies. 



The discovery of this rare fungus by Mr. Gibbs, in Mulgrave 

 Woods, during- the Yorks. Nat. Union Foray, September 1900, 

 enables us to give a revised diagnosis of the species. 



An opportunity of examining - the fungus described by Phillips 

 —Brit. Disc, p. 338 — as Encoelia Bloxami Phil., shows this 

 species to be identical with D. Curreyana. 



The spores prove to be permanently continuous, hence the 

 generic diagnosis of Diplocarpa, as given in Brit. Fung. 

 Flora, IV., p. 307, must be emended by the substitution of 'spores 

 continuous' in place of 'spores finally 3-septate. 1 Small 3-septate 

 conidia had probably been mistaken for free ascospores when 

 drawing up the generic diagnosis from herbarium material. 



The following is the emended specific diagnosis of D. Cur- 

 reyana : — Gregarious, globoso-depressed and closed at first, 

 gradually expanding until the disc is plane, up to 1 cm. 

 across ; margin slightly raised, pilose, hairs reddish-brown, 

 100-150 x 5-7 [x ; disc dingy olive-green; externally dusky 

 purple-brown, warted, narrowing downwards into a stem-like 

 base ; asci cylindric-clavate, about 60 x 6 /x ; spores 8, i-seriate, 

 hyaline, continuous, elliptical, ends rather narrowed, 2-guttulate, 

 6-8x3-3*5 li ; paraphyses filiform. Mixed with the paraphyses 

 and of equal length are numerous slender threads, each bearing 

 a eonidium at its apex; the conidia are first hyaline, then slightly 

 tinged brown, 1-3-5-septate, fusiform, 20-40x5-6 fx. Cortex 

 parenchymatous, coloured. 



On wet, rotten wood. The entire plant is subcartilaginous, 

 and dusky purple-brown throughout. The numerous conidia 

 stand at a higher level in the hymenium than the tips of the 

 asci. When sown in a suitable nutritive medium the conidia 

 germinate readily. 



Lachnea contorta Mass.&Crossl. (sp. nov.) -PI. 1, figs. 7-1 1. 



Ascophores crowded and irregular in form, due to lateral 

 pressure, closed when young, gradually becoming plane, but 

 with a persistent erect margin, disc vermilion, externally paler, 

 up to 1 cm. across ; spines almost hyaline or tinged yellow, 

 slightly tapering, apex obtuse, multiseptate, longest at the 

 margin, where they average 300 x 12 fx, wall thin ; hypothecium 

 and excipulum formed of interwoven hyphae, passing into a 

 large-celled parenchymatous cortex ; asci cylindrical, apex 

 obtuse, 8-spored, 300x14-15 ]x\ spores elliptical, ends obtuse, 

 smooth, hyaline, 23-25 x 12 [x, eguttulate ; paraphyses slender, 

 apex rather abruptly subglobose, red. 



On naked ground, Selby, Mid West Yorkshire (G. Massee). 



Naturalist, 



