220 MICROSCOPIC FUNGI. 



Microsphseria grossularise, Lev. Goosebeeey Blight ; 

 anipliiijeiious ; mycelium web-like, fugacious or persistent ; con- 

 ceptacles scattered or gregarious, globose, minute; appendages 

 10—15, vaguely dicliotomous, ultimate branchlets bidentate ; 

 sporangia 4—8, ovate, containing 4—5 spores. — On Gooseberry- 

 leaves. Autumn. Prequent. 



Ekysiphe, Hedw. 



Mycelium arachnoid ; appendages floccose, simple or irregularly 

 branched. — Berk. Ouil.y p. 404. 



* Sporangia %spored. 



Erysiphe Linkii, Lev. Mugwort Blight; amphigenous; 

 mycelium web-like ; fugacious or persistent ; conceptacles minute, 

 globose, scattered, emersed ; appendages white, interwoven wit h 

 the mycelium ; sporangia 8—20, pyriform, with elongated pedicels. 

 — On leaves of Mugwort. Autumn, f'requent. (Plate XIL 

 figs. 248, 249.) 



Erysiphe lamprocarpa, Lev. Composite Blight ; am- 

 phigenous; mycelium web-like, fugacious or persistent; con- 

 ceptacles minute, globose, scattered, or gregarious; appendages 

 coloured, interwoven with the mycelium ; sporangia 8—16, shortly 

 pedicellate. — On leaves of Salsify, Scorzonera, Plantain, &c. Au- 

 tumn. Not uncommon. (Plate XII. figs. 250, 25L) 



^'-'Sporangia Z—S-spored. 



Erysiphe graminis, D.C. Grass Blight ; amphigenous 

 or epiphyllous ; mycelium efl'use, floccose, ])ersistent ; conceptacles 

 large, gregarious or disseminated, hemispherical, at length de- 

 pressed and semi-immersed; appendages simple or interwoven 

 with the mycelium; sporangia 20—24, ovate, pedicellate, with 

 8 spores.— C)n leaves of Grasses. Autumn. Prequent. (Plate XI. 

 figs. 235, 236.) 



Erysiphe Martii, Lk. Pea Blight; amphigenous; my- 

 celium web-like, very often evanescent, globose ; appendages short, 

 interwoven with the mycelium ; sporangia 4—8, globose, pedicel- 

 late, with 4—8 spores.— On leaves of Peas, Beans, Unibellifer^, 

 and other plants. Autumn. Yery common. (Plate XL figs. 

 237-239.) 



Erysiphe Montagnei, Lev. Burdock Blight; amphi- 

 genous or hypophyllous ; mycelium web-like, evanescent; con- 

 ceptacles minute, globose, gregarious or scattered; appendages, 

 distinct from the mycelium ; sporangia 8, ovate, rostrate, with 

 2—3 spores.— On leaves of Burdock. Not uncommon. 



