86 LICHEN ACEI. [cALIcIUM. 
From other British species of the genus this is distinguished by the 
oblongo-cylindrical gonidimia, similar to those of Coniocybe furfuracea. 
The thalline squamiform granules are either somewhat scattered and 
minute, or more crowded and larger. In this more developed state, 
which is rare in Britain, the apothecia are usually less crowded, with the 
stipes firmer and shorter. 
Hab. On the trunks of old trees and decaying pales (fir) in shady a 
land tracts.—Distr. Only in one or two places in 8. and N. England, 8. 
Scotland, and S.W. Iveland—B. M.: Menstrie, New Forest, Hants ; 
Ingleby Park, Cleveland, Yorkshire. Binnie Woods, Haddingtonshire. 
Tervoe, co. Limerick. 
Subsp. 1. C. cinereum Nyl. ex Norrl. Medd. Soc. F. et Fl. Fenn. 
(1876) p. 10.—Thallus granulose, greyish or whitish. Apothecia 
with the stipes often brownish and partly greyish-suffused, capitulum 
beneath greyish or white-suffused ; spores 0,003-5 mm. in diameter. 
—Cromb. Grevillea, xv. p. 14.—Caliciwm trichiale var. cinereum 
Nyl. ex Carroll, Journ. Bot. 1866, p. 22; Leight. Lich. Fl. p. 41, 
ed. 3, p. 40. Calicium cinereum Pers. Icon. (1799) p. 88, t. 14. 
This subspecies is distinguished by the more granulose thallus and the 
differently coloured stipes. The apothecia are usually more scattered. 
Hab, On the bark of old oaks in wooded upland tracts.—Distr. Only 
in S. Ireland.—B. M.: Deer Park, Castlemartyr, co. Cork. 
Subsp. 2. C. stemoneum Ny). ew Norrl. Medd. Soe. F. et Fl. Fenn. 
(1876) p. 10.—Thallus thinnish, leprose, greyish- or greenish-yellow. 
Apotheeia black or brownish-black ; stipes short or elongate, dark- 
brown; capitulum grey-pruinose beneath, or nearly naked; sporal 
mass umbrine or reddish-brown; spores as in the type.—Cromb. 
Grevillea, xv. p. 14.—Cahcium trichiale var. stemoneum Ach. Lich. 
Univ. (1810) p. 243; Nyl. Syn. i. p. 150, t. v. f. 15; Mudd, Man. 
p. 260; Cromb. Lich. Brit. p. 12; Leight. Lich. Fl. p. 41, ed. 3, 
p. 40. Calictum eruginosum Turn. & Borr. Lich. Br. p. 156; Eng. 
Bot. t. 2502; Sm. Eng. Fl. v. p. 141. Phacotiwn aruginosun 
Gray, Nat. Arr. i, p. 484.—Brit. Ews.: Leight. n. 227; Mudd, 
n. 248, 
Distinguished chiefly by the thin leprose thallus and the colour of the 
stipes. The stipes is short and stout, or elongate and slender, accord- 
ing to the habitat. The sterile plant may not be unfrequent in some 
parts of Englaud, but fertile specimens are rare. 
Hab. On the trunks of old trees, stumps and pales in shady lowland 
and upland situations.—Distr. Local and scarce in S., W., and N. Eng- 
land.—B. M. : Bury St. Edmunds, Suffolk ; Cuckfield, Sussex ; Kenwick, 
Worcestershire ; Bousdale Gill, Cleveland, Yorkshire. 
