Uncinula adunca, Lév. Willow Blight; mycelium variable; conceptacles scattered or gregarious, minute; appendages simple; sporangia 8-12, sub-pyriform, containing 4 spores.—On the leaves of Willows, Poplars, Birch, &c. Not uncommon. ([Plate XI.] figs. 221-224.)
Uncinula bicornis, Lév. Maple Blight; amphigenous; mycelium web-like, effuse, evanescent, or like a membrane and persistent; conceptacles large, hemispherical, at length depressed; appendages simple, bifid or dichotomous, uncinate; sporangia 8, sub-pyriform, containing 8 spores.—On the leaves of Maples. Common. ([Plate XI.] figs. 225-228.)
Microsphæria, Lév.
Mycelium arachnoid; appendages straight, dichotomous; branchlets swelling at the tip, or filiform.—Berk. Outl., p. 404.
Microsphæria Hedwigii, Lév. Mealy Guelder-rose Blight; hypophyllous; mycelium web-like, evanescent; conceptacles minute, globose, scattered; appendages few, very little longer than the diameter of the conceptacles; sporangia 4, ovate, containing 4 spores.—On leaves of mealy Guelder-rose. Near Greenhithe, Kent.
Microsphæria penicillata, Lév. Guelder-rose Blight; amphigenous; mycelium web-like, effuse, evanescent; conceptacles scattered, minute, globose; appendages 8-12, equal to the diameter of the conceptacle; sporangia 4, ovate, rostrate, containing 8 spores.—On leaves of Guelder-rose and Alder. Probably not uncommon. ([Plate XI.] fig. 234.)
Microsphæria Mougeotii, Lév. Tea-tree Blight; amphigenous; mycelium web-like, oftentimes persistent; conceptacles minute, scattered or gregarious, globose, at length depressed; appendages loosely dichotomous; sporangia 12-16, on a short pedicel, 2-spored.—On leaves of Lycium barbarum. Near Dartford, Kent. October, 1864.
Microsphæria Berberidis, Lév. Berberry Blight; amphigenous; mycelium web-like, oftentimes persistent; conceptacles scattered or gregarious, globose, minute; appendages few (5-10); branchlets long, divaricate, obtuse at their apices; sporangia 6, ovate, containing 6-8 spores.—On leaves of the common Berberry. Autumn. Frequent. ([Plate XI.] figs. 229-232.)
Microsphæria grossulariæ, Lév. Gooseberry Blight; amphigenous; mycelium web-like, fugacious or persistent; conceptacles scattered or gregarious, globose, minute; appendages 10-15, vaguely dichotomous, ultimate branchlets bidentate; sporangia 4-8, ovate, containing 4-5 spores.—On Gooseberry-leaves. Autumn. Frequent.