No. 90- 
December, 1890. 
(Sr^rillp. 
A QUARTERLY RECORD OF CRYPTOGAMIC BOTANY 
AND ITS LITERATURE. 
BRITISH THELEPHOREI. 
( Continued from p. 21 .) 
Gen. 4. CORTICIUM. Fries. 
Hymenium amphigenous, even or tuberculose, waxy, smooth, 
arising immediately from the mycelium without an intermediate 
stratum ; spores white. 
A. Margin free , determinate , marginate. 
1. Corticium salicinum ( Fr .). Stev. Brit. Fung. II., 273. 
Coriaceous, soft, rigid when dry, fixed by the centre, margin 
everywhere reflexed, externally white villous; hymenium per- 
sistently blood red, continuous when dry ; spores cylindrical- 
ellipsoid, curved, 14-16 x 5-6 ft. 
On willow, rarely on poplar. Kinrara, N.B. 
2. Corticium evolvens {Fr.). Cooke Handbk. No. 921. Stev. Brit. 
Fung. II., 273. 
Resupinate, marginate or effuso-reflexed, soft, covered beneath 
with a whitish flocculose tomentum, not zoned ; hymenium naked, 
smooth, rather rugose, tawny growing pale, cracking when dry ; 
spores ellipsoid, 10-12 x 5 ft. 
On bark, especially cherry. 'King’s Cliff. Batheaston. Dang- 
stein, Warwick. Glamis. Forres, N.B. 
3. Corticium porosum, Berk. Sf Curt. Ann. Nat. Hist. No. 1821. 
Stev. Brit. Fung, n., p. 275. 
Resupinate, milk white, here and there porous, margin free, 
reflexed ; spores oblong-ellipsoid, 7 X 4 ft. (“ The pores look as 
if little dewdrops had settled on the hymenium, which had in con- 
sequence contracted.”) 
On wood. Aboyne. 
4. Corticium populinum, Fr. Hym. Fur. 648. 
Soft, tubercuiiform, soon confluent and effused, at length 
involute, marginate, whitish tomentose beneath ; hymenium un- 
even, ferruginous- cinereous ; spores subglobose 7-8, p 
On poplar. Scarboro. 
3 
