PERICH^ENA popuuNA.
Poplar Perichama.
C l a s s a n d O iiD L it CKYPT'OGAMIA PUNGI, Lm»».— N a t . O b d . GASTROMYCI,
Link.
G EN ERIC CHARAC TER .
Peridium papyraceurn, regulare, persistens, simplex, lieve, demum circtmcissum.
Flocci rari, immixti liberi.
Peridium papyraceous, regular, persistent, simple, even, at length bursting
transversely into two portions. Filaments few, free, lying among the
sporidia.
S P E C IF IC c h a r a c t e r .
P E R IC H .E N A populina ; gregaria, peridiis globosis, luleo-fuscis, nitidis, sporidiii
luteis.
P. gregarious ; peridia globose, yellow-brown, shining, the sporidia yellow.
P e r i c h . e n a populina. Fries, Symb. Gast. p. 12. et Char. Gen. Syst, Orb. Veg.
Pars 1. p. 141.
L icea circumscissa, Pers. Syn. Fung. p. 196.—Alb. et Schwein. p. 108.—De
Cand. Fl. Fran;, v. 2. p. 249.—Fjusd. Syn. p. 55.—Scliwán. Fung. Carol.
No. 417.—Hook. Fl. Scot. Pt. 2. p. 13.—Crev. Fl. Fdin. p. 451.
T richia g ymnosperma , Pers. Obs. Mycol. 1. p. 63. t. 6. f. 1,-2.
SPH.ER0CARPÜS subsessilis. Bull. Champ, t. 417- f. 5.—Sow. Fung. t. 258. i“
H ab. Trunks of decaying trees, chiefly between the wood and the bai-k,
especially on the Aspen (Populus tremula). Frequent in Spring and
Autumn.
Peridia crowded, as large as the bead of a small pin, of a yellow-brown, or
pale chesnut colour, smooth, even, globose, somewhat shining, of a very
delicate and fragile texture, bursting transversely in the middle, so that
the upper h a lf falls off like a lid. Sporidia b rig h t yellow, copious, spherical,
intermixed with a very few slender filaments.
The genus Perichcena, now illustrated for the first time in
this work, was established by my excellent friend JM. F r i e s
in his Symholge Gasteromycorum, published in 1817; and he has
again introduced its character in his very learned and laborious
Systema Orbis Vegetahilis, of which the first part appeared in