. DECADES OF FUNGI. 19 
latinous pellicle, which is minutely scabrous, especially behind, with 
short yellowish down ; flesh moderately thick; margin involute. Stem 
externally short or obsolete ; when present, clothed with yellow strigæ- 
Gills at first narrow, but at length more than + of an inch broad. 
This species, of which I can find no description, resembles 4. salici- 
nus, but is remarkable for a subgelatinous coat, like that of 4. palmatus, 
with the addition of a short scabrous down, especially behind. The 
whole plant seems to have a more or less yellow tint. 
307. Exidia straminea, n. s.; minuta, cupulæformis, erumpens, strami- 
nea, basi rugosa stipitiformi, extus subtiliter pubescente, intus subpli- 
cata. (Tas. I. fig. 4.) 
Has. On smooth bark. Wood near Pau, South of France, 
Erumpent, straw-coloured, 4—4 an inch broad, cup-shaped, at length 
flexuous, externally slightly wrinkled, clothed with extremely minute 
pubescence, scarcely velvety, elongated below into a short sulcate 
stem ; internally even, except at the base, which is somewhat wrinkled. 
The substance consists of delicate anastomosing flocci, which expand 
above into 2-3 septate clavate moniliform threads, which form the hy- 
menium. Margin involute, denticulate. 
This pretty species has the habit of a Peziza, and is altogether dis- 
tinct from every species with which I am acquainted. I have not seen 
perfect spores, but the specimen seems to have arrived at maturity. 
Tab. I. fig. 4: a portion of the threads of the hymenium, magnified 
300 diameters. 
308. Spheria (Circinatæ) parmularia, n. s. ; parya, pustulæformis ; 
peritheciis circinantibus lateraliter arcte compressis, ostiolis vix dis- 
tinctis umbonem efformantibus ; ascis linearibus, sporidiis lato-oblongis 
uniseptatis fuscis. — 
Has. On the smooth didis bark of young trees (apparently on 
birch) ; Transoubat, South of France. On oak ; King's Cliff. : 
Scarcely a line broad, forming little pustules with a black a - 
Perithecia circinating, closely packed, so as to present, when cut -— 
through, a triangle with one curved and two straight sides. Ostiola - 
in general indistinct. Asci linear, containing eight brown, broadly 
oblong, uniseptate sporidia, like those of many Diplodie. 
This curious species has been known to me for some years, but has 
never been published, in consequence of the doubt attached to its 
proper position, in consequence of its growing on living bark, en 
