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UREDO E a b æ .
Bean-leaf Uredo.
C la s s a n d O r d e r CRYPTOGAMIA FUNGI, L i n n S x x . O r d . GASTROMYCI,
GreR._EPIPHYTÆ, Link.
G EN ERIC c h a r a c t e r .
Peridium verum 0. Sporidia non septata, nuda, libera. Plantuloe “ sub epidermide
foliorum herbacearum ortoe et epidermide rupta facile dispersoe.”
Epidermis peridio simillima.
No true peridium. Sporidia unilocular, naked, free, bursting through the
epidermis of the leaves of herbaceous plants, and easily dispersed ; epidermis
resembling a true peridium.
S P E C IF IC CHAUACTER.
U r ed o F a b æ ; sparsa, rotundata, depressa, fusca, epidermide rupta cincta, sporidiis
subovalibus pedicello quandoque insiructis.
Ü. scattered, roundish, depressed, brown, surrounded by the remains of the
ruptured epidermis ; sporidia somewhat oval, sometimes furnished with
a pedicel.
U redo Fabæ, Pers. Disp. Meth. Fung. p. 13.— Syn. Fung. p. 221.—Alb. et
Schwein. p. 127.—De Cand. FI. Franç. ed. 3. v. 2. p. 596. et v. 6. p. 69.
Ejusd. Syn. p. 47— Ejusd. Encyc. Bot. v. 8. p. 225.
U redo cincta, Strauss, in Annal. Soc. Wetterav. v. 2. p. 95. var. «.
U redo fu s c a , Purt. Midi. FI. v , S. p. 50 7 .
H a b . On the leaves and stalks chiefly o f the Common Bean {Vida Faba),
but also on Vicia satwa, Lathyrus pratensis, several species of Medicago,
and on Trifolium repens. Summer and autumn ; frequent.
Scattered on both sides of the leaf, and on the stalk, sometimes so numerous
as to give the surface a brown colour, and interrupt the growth of the
plant. The spots are generally of a roundish form, except when growing
on the stalk ; they are then oval or oblong. The remains of the
ruptured epidermis are rather persistent. Sporidia roundish or nearly
oval, of a reddish-browH colour, and often furnished with a minute pedicel.
This apparently insignificant little plant, is sometimes as
injuiious to the fanner as the common blight. It spreads pro-
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