226 MICROSCOPIC ruxGi. 



The following genus is entirely new to Britain. Its position is 

 nest to yLicrosplKErla at page 219. 



PoDOSPH^RAj Kunze. 



Mrcelium effuse, web-like, evanescent ; conceptacles spLaerical, 

 containing one sub-globose S-spored sporangium ; spores ovate ; 

 appendages few, dicliotomous, thickened at their extremities, 

 hyaline. 



Podosphgera Kunzei, Lev. Ploi Blight ; amphigenous ; 

 conceptacles minute, scattered, globose ; appendages three times 

 the length of the diameter of the conceptacles. — On leaves of 

 Prunus do/nestica. Shere, Surrey. Sept., 1S65. {Dr. Capron.) 



Podosphsera clandestina, Lev. Hawthoen Blight; 

 amphigenous; conceptacles minute, globose, scattered; appen- 

 dages (S — 10) equal in length to the diameter of the conceptacles ; 

 branches short and rounded at their extremities. — On leaves of 

 the Hawthorn. Upper HoUowav, October, 1861: ; Shere, Surrev, 

 September, 1865. {E. C.) 



Uneiimla Wallrotliii, Lev. Sloe Blight ; amphigenous ; 

 mycelium web-like, evanescent ; conceptacles minute, scattered ; 

 sporanges 12 — 16, pear-shaped, 6-spored ; appendages numerous, 

 twice the length of the diameter of the conceptacles. — On leaves 

 of the Sloe, Prumis spinosa. Shere, Surrey. October, 1S65. 

 (JDr. Capron.) 



Microsphseria comata, Lev. Spi>'dle Blight; hypo- 

 phyllous ; mycelium web-like, fugacious ; conceptacles scattered, 

 minute, globose; sporanges 8, ovate, with a beak -like termination 

 at their Base, 1-spored ; appendages few, six times the lenGcth of 

 the diameter of the conceptacles.— On Huonymi's Europceus. Shere, 

 Surrey. August, 1865. {Dr. Capron.) 



Erysiphe horridtila. Lev. Boeage Blight ; amphigenous ; 

 mycelium web-like, sometimes persistent; conceptacles minute, 

 globose, scattered or clustered ; sporanges 20—21, oblong-ovate, 

 attenuated downwards, containing 3—1 spores ; appendages short, 

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

 Shere. October, 1865. {Dr. Capron,.) 



Chsetommm murorum, Corda. Wall Bristle- mould ; 

 gregarious, glaucous, then blackish ; perithecium globose, brown ; 

 hairs circinate, erect, septate, pulverulent; spores oblong, yel- 

 lowish. On plaster. Bare. (^1/. /. B) 



