MR, GEORGE MASSEE ON THE THELEPHORER. 153 
ofthe plant. The hymenium is sometimes very much cracked, 
and the cystidia are more cylindrical and less incrusted than 
usua]. 
Europe; N. America. 
PENIOPHORA RIMOSA, Cooke. Late effusa, adglutinata, inde- 
terminata; hymenio ochraceo, subtiliter velutino, areolato 
rimoso, interstitiis sericeis ; cystidia fusoidea, 70-100 x 15-18 u; 
spore oblongo-ellipsoidee, utrinque obtuse, leviter curvule, 
15-17 x6 p.— Cooke, Grev. ix. p. 94. (Type in Herb. Cooke, 
Kew.) 
“ Hymenial processes most abundant, often in clusters, hya- 
line, rough nearly to the apex. Externally it bears so close a 
resemblance to Corticium Berkeleyi, Cooke, that when collected 
it was believed to be that species, but its substance is thicker and 
firmer, and it is further distinguished by the presence of the 
processes characteristic of the genus.” (M.C. Cooke.) 
Closely allied to cracked forms of P. velutina, from which it 
is readily distinguished by its larger spores. The cystidia are 
usually scattered, but sometimes grouped in clusters. 
On bark and wood. England. 
PENIOPHORA TERRESTRIS, Massee.  Effusa, tenuissima, cinerea 
vel pallide cervina, indeterminata; hymenio velutino; cystidia 
eylindraceo-fusoidea, 85-90X15-20 u; spore ellipsoider, 10x 
6-7 u.— Massee in Grev. xv. p. 107. (Type in Herb. Kew.) 
On naked soil, and also running over leaves and branches, 
forming grey or fawn-coloured patches resembling a mould in 
habit. England. 
PENIOPHORA KamzsTENI, Massee.  Latissime effusa, adgluti- 
nata, tenuissima, pallescenti-gilva; hymenio leviter velutino ; 
eystidia clavata, interdum apice paulum coarctata, asperula, 
80-100 x10-12 u; spore ellipsoidee, 5-7 x4 y.—Corticium 
alneum, P. Karst—Exs.: Rabenhorst- Winter, Fungi Europei, 
3231. Specimens communicated by Karsteu from Finlaud, 
growing on bark and wood of Alnus, Betula, and Populus. 
Karsten considers that his specimens belong to the Stereum 
alneum, Fries, Epier. 553, which is said by Fries to resemble 
Corticium incarnatum (=Peniophora incarnata, of present work); 
whereas the specimens of Karsten, so far as the Kew copy of 
