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U R EDO OBLONGATA.
Oblong Uredo.
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C lass a n d O r d e r CRYPTOGAMIA FUNGI, £ ìr r . - N a i . O r d . G A S T RO M YC l, Grev.
—e p i p h y tæ : . Link— LYCOPERDONNÆ, Merai.—FUNGI, De Cand. Hook.
GEN ERIC CHARACTER.
Peridium verum nullum; sparidia plerumque globosa, non septata, nuda, libera;
plantulæ “ sub epidermide foliorum lierbacearum ortæ et epidermide rupia,
faxAlè dispersæ," (D e Cand.) Epidermis peridio simillima.
No true peridium (membrane enclosing the sporidia). Sporidia mostly globose,
unilocular, naked, free ; bursting through the epidermis of the leaves
of herbaceous plants, and easily dispersed. Epidermis resembling a peridium.
S PE C IF IC CHARACTER.
U redo o b lo n g a ta ; minuta, sparsa, oblonga, fusca, epidermide kmgitudinaliter
rupta. Sporidia globosa.
U. minute, scattered, oblong, brown, bursting through the epidermis lengthwise.
Sporules globular.
U redo oblongata. Link
U redo caricina, De Cand. Fl. Franç. v. 6‘. p. 83—Merat, Nouv. Fl. des Environs
de Par. v. 1. p. 98.
U r e d o caricis, ( not o f Pers.) Schleich, Cent. Exs. No. 92.—De Cand. Syn. Ft.
Gall. p. 48.—Enc. Bot. 8. p. 230.—Fl. Dan. t. 1317.J
H ab. On the leaves of Luzula maxima, Carex penduta, and Carex pseudo-cy-
perus; generally on the superior surface. Summer. Roslin and Auchindenny
woods ; rather rare.
In its early state yellowish or reddish, soon changing to brown. Farm, tolerably
regular, oval or oblong ; epidermis rather long in bursting, which
at length it does in a longitudinal direction, giving exit to the subsphe-
rical sporules, which are by no means numerous. The pustules of this
species are surrounded by a reddish or crimson spot, particularly when
growing on Luzula maxima.
D e C a n d o l l e first described this species under the name
of U. caricis,—a name already pre-occupied by P e r s o o n ,
whose species, however, D e C a n d o l l e considered a variety
of U. segetum. Further investigation induced botanists to
VOL. I.