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E R IN E ÜM AOBEüM.
Golden Erineum.
Clasb a n d Odder CRYPTOGAMIA FUNGI, Linn— N a t . Ord. G A S T ROM YC l, Grev—
MUCEDINES, Link FUNGI, J-uss. &c.
GENERIC CHARACTER.
Planta epiphylla, depressa, subgrumosa vel sericea, vel filamentosa, ex tubis cy-
lindrkis vel compressis, clavatis aut turbinatis, in cæspitulis latis congestis,
composita.
Plant epiphyllous, depressed, subgrumose, velvety, or filamentous, composed
of cylindrical or compressed, club-shaped or turbinate tubes, collected
into broad tufts.
SPECIFIC character.
E rineum a u re um ; hypo- rare epiphyllum, serkeum, aureum, late effusum;
tubis flavis simplicibus minutissimis clavatis.
E. on the under, rarely the upper surface of the leaf, sericeous, gold-colour,
broadly effused ; tubes yellow, simple, very minute, club-shaped.
E rineum aureum, Pers. Syn. Fung. p. 700.; et Mycol. Furop. sect. 1. p. 8.
—De Cand. Fl. Franç. v. 6. p. 14..—Fjusd. Syn. p. 15 Alb. et Schm.
Conspect. Fung. p. 371.— Crev. in Fdinb. Phil. Journ. v. 6. No. 12. p. 81.
t. 3. f. 15. et Fl. Fdin. ined.
H ab. On the leaves of Populus nigra, in summer and autumn. Glasgow
Botanic Garden, D r H ooker. Carlowrie, near Edinburgh, and elsewhere,
not unfrequent.
There can be no difficulty in ascertaining this species, as it is the only one
of a bright-yellow colour. I t appears, at first, in a small spot, with a
yellow tinge, and forming a small hollow in the leaf ; but it speedily becomes
larger, brighter, and often spreads so much as to cover a great
part of the surface. When in perfection, it is sericeous, and of a fine
golden colour. The deep colour is evidently derived from the sporules,
which are excessively minute, but sufficiently visible under a high power
of the microscope.
One of the finest E rin ea we possess, and of some importance,
as the fructification is more evident than in any other
species. Under a high magnifying power, the sporules are
VOL. I.