U R ED O CANDIDA.
White Uredo.
C l a s s a n d O n u E R CRYPTOGAMIA FUNGI, Linn N a t . O r d . EPLPHYTJE,
Link.
G EN E R IC CHARACTER.
Sporidia simplicia, nuda, libera, sub epidermide foliarum coacervata, et epider.
mide rupta, facile dispersa.
Sporidia simple, naked, free, collected together beneath th e epidermis of
leaves, and easily scattered when the epidermis is ruptured.
S P E C IF IC c h a r a c t e r .
U redo candida; polymorpha, candida, sporidiis copiosis spharicis.
U. polymorphous, white, the sporidia plentiful, spherical.
U redo candida, Pers. Syn. Fung. p. 223.—Alb. et Schwein. p. 12g.—De Cand.
Fl. Fran;, v. 6 . p. 88.—Moug. et Nestl. St. Fxsicc. No. I 90.—Rebent. Fl.
Neom. p. 356.—Strauss, in Act. Wetterav. v. 2. p. 85.—Schwein. Fung.
Carol. No. 481.—Hook. Fl. Scot. Pa rt 2 . p. 15— Grev. Fl. Fdin. p. 442.
U redo cruciferarum, De Cand. Fl. Fran;, v. 2. p. 596.—Fjusd. Syn. p. 4__
Moug. et Nestl. I.e. No. 86.—Schmidt et Kunze, Deutschl. Schwaem. No. 86.
U r e d o Tragopogi, De Cand. Fl. Fran;, v. 2. p. 237.—Fjusd. Syn.p. 49.
U r e d o inaperta. De Cand. 1. c. p. 237.
U redo Petroselini, De Cand. Syn. Fl. Gall. p. 49.
U redo Thlaspi, Sow. Fung. t. 340.— With. Bot. Arr. ed. 6. v. 4 . p. 481.—
Purt. Midi. Ft. V. 3. p. 296. in part.
R eticularia Thlaspi, Rehl. Fl. Cant. ed. 3. p. 568.
Caeoma c andidum , Nees, Syst. t. 1. f 8.
C^EOMA U redo c andida, Mart. Fl. Frlang. p. 316.
.®cimuM candidum, Gmel. Syst. Nat. 2. p. 1473.
H ab. On the leaves, stalks, and even seed-vessels, of many Crucferce, or
Tetradynamous plants, rarely on plants of other classes. Summer.
Very abundant.
Plant of a very white hue, attacking the stalks, leaves, calyx, and even seed-
vessel, at its first appearance distinct, afterwards often confluent; sometimes
growing in clusters in a circular manner, very irregular in form,
being much influenced by the structure o f the p a rt on which it grows.
In most cases, the epidermis is very late in bursting, and sometimes appears
never to do so at all. Sporidia spherical, very numerous, white,
diaphanous under the microscope.
VOL. V.