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APPENDIX. 219
Uncinula adunca, Ley.
Willow Blight; mycelium
variable ; conceptaeles scattered or frregarious, minute ; appendages
simple ;
the leaves of Willows, Poplars, Birch,
(Plate XI. figs. 221—224.)
sporangia 8 — 12, sub-pyriform, containing 4 spores.
— On
&c. Not uncommon.
Uncinula bicornis, Lev. Maple Blight ; amphigenous ;
mycelium web-like, effuse, evanescent, or like a membrane and persistent
; conceptaeles 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 XL figs. 225—228.)
MiCROSPHiERIA, Lev.
Mycelium arachnoid ; appendages straight, dichotomous ;
branchlets
swelling at the tip, or filiform. — Berk. Outl., p. 404.
MicrosphseriaHedwigii, Lev. Mealy Guelder-rose
Blight ;
hypophyllous mycelium ; web-like, evanescent ; conceptaeles
i minute, globose, scattered; appendages few, very little
longer than the diameter of the conceptaeles ;
sporangia 4, ovate,
containing 4 spores.
— On leaves of mealy Guelder-rose. ^ Near
Greenhithe, Kent.
Microsphseria peniciUata, Lev. Guelder-rose
Blight ; amphigenous ; mycelium web-like, effuse, evanescent
—
;
conceptaeles scattered, minute, globose ; appendages 8 12, equal
to the diameter of the conceptacle ; sporangia 4, ovate, rostrate,
Pro-
— containing 8 spores. On leaves of Guelder-rose and Alder.
bably not uncommon. (Plate XI. fig. 234.)
Microsphseria Mougeotii, Lev. Tea-tree Blight;
•
amphigenous ; mycelium web-like, oftentimes persistent conceptaeles
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.
Microsphseria Berberidis, Lev.
Berberry Blight;
amphigenous ; mycelium web-like, oftentimes persistent ;
conceptaeles
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. Prequent. (Plate XI. figs. 229—
232.)