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C i iS S a n d O b d e b CRYPTOGAMIA FUNGI, ir a it— N a t . O b d . G A S T R O M YC l, Grev.
—EPIPHYTÆ, Link FUNGI, De Cand. Hook.
GEN ERIC CHARACTER.
Peridium verum 0. Sporidia imi aut muUihculala, pedkellata, fusca vel nigra,
pedicello f x a , et in coespitulos aggregata, foliis vivis parasitki. Epidermis
fo lk rum peridio simillima.
True peridium 0. Sporidia one or many-celled, pedicellated, dark brown or
black, fixed by the pedicel, and growing in minute clusters or tufts on
living leaves. The epidermis bearing a strong resemblance to a peridium.
S PE C IF IC c h a r a c t e r .
P u c c i n i a Rosæ, hypophylla. Sporidia mucronata, 5—7 ¡oculata, stipite albo
flifo rm i basi incrassato et gianduia lutea instructo.
P. growing on the inferior surface of the leaf. Sporidia mucronated, 5—7
celled, with a white filiform stem incrassated towards the base, and furnished
with a yellow gland.
P u c c i n i a Rosæ, De Cand. Fl. Franç. ed. 3. v. 2. p. Z18.— Ejusd. Syn. p. 44.
— Merat, Nouv. FL des Env. de Paris, v. 1. p. 104.—JlioMg. et Nest. Piatii.
Exs. No. Z9S.— Purt, Midi. Fl. y. 3. p. 301. t. 28.— Grev. Fl. Edin. ined.
—Gray’s Nat. Arr. v. 1. p. 543.
P u c c i n i a mucronata, a Rosæ, Pers. Syn. Fung. p. 230.—Tent. p. 38. t. 3—
Alb. et Schni. p . 134 Hedn. f . Fung. ined. t. 4.—Fl. Dan. t. 1369-—
Hooh. Fl. Scot. Pt. 2. n .— Nees, Syst. t. l . i . 14.
U r e d o mucronata, Strauss, in Annal, Soc. Wetterav. 2. p. 10 9 .
A scophoba disciflora, Tode, Meckl. Fung. t. 3. f. 26.
Hab. On the leaves of various Rosæ, paiiicularly R . canina, R . alba, and
R . centifolia. Very abundant in autumn, in fields and gardens.
Tufts scattered, b la ck , lax, v e ry u nequal in size. Sporidia u n d e r th e microscope
reddish-brow n, mucronate, 5—7 CeUed, smooth, of an oblongo-cy-
lin d rica l form, a n d fu rn ish ed w ith a w h ite filiform stem, incrassated for
a t le a st th e lower h a lf o f its whole le n g th ; a t th e base o f th e incrassated
p o rtio n is a yellow g la n d , below w hich th e stem terminates in a very short
process.
The present species is among the earliest of those noticed,
by botanists. T o d e , who described our plant as an Ascophora,
VOL. I.