APPENi;ix. 221 



Erysiphe tortilis, Lie, Counel 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.) 



Erysiphe communis, Schl. Butteecup 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 UanunculacecB, Legiiminosa, and other plants. 

 Antumn. Very common. (Plate XII. figs. 240—242.) 



Ch^tomium, Kze. 



Perithecium tnin, brittle, mouthless ; sporangia linear,^contain- 

 iug dark lemon-shaped spores. Berk. Oidl., p. 405. 



ChsDtomium elatum, Kze. Straw-bristle Mould; 

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

 very long, interwoven, branched ; spores broadly ellipt ic, apiculate 

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

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



Chsetomium chartarum, Ehb. Paper-bristle Mould ; 

 perithecium subglobose, black, surrounded by a bright yellow 

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

 (PlateXII.figs. 252, 253.) 



Chsetomium glabrum, B. 



This species has never been described. It was recorded, by 

 name only, in Berkeley's Outlines, and, the specimens being mis- 

 laid, that gentleman is unable to describe it completely and 

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

 Cho'tomiim elatum in being perfectly free from hairs." — {M. J. B.) 

 — On damp straw. 



Ascotriciia, Berk. 



Perithecium thin, free, mouthless, seated on loose, branched, 

 conidiiferous threads ; sporangia linear, containing dark 

 elliptic spores. — Berk. Outl., p. 405. 



Ascotricha chartarum, B. Paper Mildew ; perithecium 

 thin, olive-brown, seated on radiating flocci; sporangia linear, 

 numerous ; spores broadly elliptic, chocolate-coloured.— On white 

 prmted paper in a deal candle-box. King's Cliffe. (Plate XII. 

 figs. 254-256.) 



