242 MICROSCOPIC FUNGI. 



flexuose, and bent upwards. — On leaves of Lycopsis arvensis. 

 Sbere. October, 1865. (Br. Capron.) 



Erysiphe tortilis, Lk. Cornel Blight ; hypophyllous ; 

 mycelium web-like, effuse, evanescent ; conceptacles minute, glo- 

 bose ; appendages ten times as long, free from the mycelium, 

 flexuose ; sporangia 4, ovate, rostrate, with 4 spores. — On leaves 

 of the common Dogwood. Autumn. Frequent. (Plate XII. 

 figs. 245, 246.) 



Erypsiphe communis, Schl. Buttercup Blight ; hypo- 

 phyllous ; mycelium effuse, web-like, evanescent or persistent ; 

 conceptacles minute, globose, scattered or gregarious; appendages 

 short; sporangia 4-8, ovate, rostrate, with 4-8 spores. — On leaves 

 of various Ranunculacea, Leguminosce, and other plants. Autumn. 

 Very common. (Plate XII. figs. 240-242.) 



Ch,eto:viium, Kze. 



Perithecium thin, brittle, mouthless; sporangia linear, contain- 

 ing dark lemon-shaped spores. Berk. Outl., p. 405. 



Chsetomium elatum, Kze. Straw Bristle-Mould ; 

 perithecium sub-ovate, base radiato-fibrose, hairs of the vertex 

 very long, interwoven, branched; spores broadly elliptic, apiculate 

 at either end. — On mouldering straw, reeds, matting, &c. Very 

 common. (Plate XII. figs. 257-259.) 



Chsetomium chartarum, Elib. Paper Bristle-Mould ; 

 perithecium subglobose, black, surrounded by a bright-yellow 

 spot ; spores subglobose.— On paper. Stibbington, Hants. Hare. 

 (Plate XII. figs. 252, 253.) 



Chsetomium glabrurn, B. Perithecia subglobose, smooth; 

 asci linear ; sporidia globose, uniseriate, smooth. — On straw, in 

 company with Lycogala parietintim, of which, it is probably a 

 condition. " It grew abundantly on straw, and differed from 

 Chatomium elatum in being perfectly free from hairs." — (M. J. B.) 

 — On damp straw. 



Chsetomium funicolum, Cooke. Twine Bristle-Mould , 

 perithecia scattered, sub-ovate, black ; hairs of the vertex very 

 long, dichotomous or simple, erect, slender, acute, black ; sporidia 

 lemon-shaped, dingy brown. — On twine suspended in a vessel 

 containing water at the British Museum. 



This species is most closely allied to C. elatum, but much 

 smaller and neater. It is wholly black, and without the fibrous 



