80 I.KUKXACEI. [CALICU-M. 



From other British species of the penus this is distinguished by the 

 oblongro-cylindrical gonidimia, similar to those of Coniocybe furftiracea. 

 The thalline sf|uam"iform granules are either somewhat scattered and 

 mimite, 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. 



Hah. On the trunks of old trees and decaying pales (fir) in shady up- 

 land tracts. — IMr. Only in one or two places in S. and N. England, S. 

 Scotland, and S.W. Ireland. — B. M. : Menstrie, New Forest, Hants ; 

 lugleby Park, Cleveland, Yorkshire. Biunie Woods, Haddingtonshire. 

 Tervoe, co. Limerick. 



Subsp. 1. C. cinerenm Xyl. ex Xorrl. Medd. Soc. F. et Fl. Fenn. 

 (187G) p. 10. — Thallus graniilose, greyish or whitish. Apothecia 

 with the stipes often brownish and partly greyish-suffused, capitulum 

 beneath greyish or whitc-sufFuscd ; spores 0,003-5 mm. in diameter. 

 — Cromb. Grevillea, xy. p, 14. — Calicium tricliude var. cinereum 

 Kyi. ex Carroll, Journ. Bot. 1866, p. 22 ; Leight. Lich. Fl. p. -41 , 

 ed. 3, p. 40. Calicium cinerenm Pers. Icon, (1799) p. 38, 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. steinoneum Xyl. ex Xorrl. Medd. Soe. F. et Fl. Fenn. 

 (1876) p. 10. — Thallus thinuisb,leprose, greyish- or greenish-yellow. 

 Apothecia black or brownish-black ; stipes short or elongate, dark- 

 brown ; capitulum grey-pniinose beneath, or nearly naked; sporal 

 mass umbrine or reddish-brown; spores as in the tj'pe. — Cromb. 

 Greyillea, xv. p. 14. — Calicium trichiale var. stemonexmi Aeh. Lich. 

 Univ. (1810) p. 243 ; Kyi. Svn. i. p. 150, t. v. f. 15 ; Mndd, Man. 

 p. 260 ; Cromb. Lich. Brit. 'p. 12 ; Leight. Lich. Fl. p. 41, ed. 3, 

 p. 40. Calicium ariujinosum Turn. & Borr. Lich. Br. p. 156 ; Eng. 

 Bot. t. 2502 ; Sm. Eng. Fl. v. p. 141. Pliacotium am^inosum 

 Gray, Kat. Arr. i. p. 484.— Brit. Exs. : Leight. n. 227 : Aludd, 

 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 unfrequeut in some 

 parts of England, but fertile specimens are rare. 



Ifab. 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 ; Bousdalc Gill, Cleveland, Yorkshire. 



