166 LICHENACEI. [CLADONIA. 



Hob. On peaty soil and decayed trunks of trees in upland situations. 

 Distr. Found only in N. England and among the Scottish Grampians. 

 B. M. : Eglestone, Durham. Rannoch and Craig-y-barns, Dunkeld, 

 Perthshire ; Ballochbuie Forest, Braeinar, Aherdeenshire ; Rothie- 

 muichus Woods, Inverness-shire. 



34. C. digitata Hoffm. Deutsch. Fl. ii. (1795) p. 124. Thnllus 

 foliaceous at the base, the leaflets roundly lobed or crenato-incised, 

 pale-green above, beneath whitish and usually pulverulent; podetia 

 Bubcylindrical, simplish, rarely divided, scyphiferous, white- or 

 yellow-pulverulent in the upper portion, corticate and subrugulose 

 at the base ; scyphi usually narrow, the margin incurved, entire or 

 irregularly divided and shortly proliferous (K + yellow, CaCl ). 

 Apothecia small and discrete, or large and confluent ; spores 0,009- 

 11 mm. long, 0,0035-40 mm. thick. Cromb. Lich. Brit. p. 21 ; 

 Leight. Lich. Fl. p. 69, ed. 3, p. 63. Cladonia cocci/era e. digitate 

 et . digitato-radiata Mudd, Man. p. 61, <?. digitata Brit. Clad. p. 31. 

 Scypho'phora digitata Gray, Nat. Arr. i. p. 422. Lichen digitatus 

 Linn. Sp. PI. (1753) p. 1152. Lichen deformis Huds. Fl. Angl. 

 p. 458 pro parte ; Lightf. Fl. Scot. ii. p. 876 ; With. Arr. ed. 3, iv. 

 p. 38. CoraUoidcs crassius subincanuni, calicibus dentatis Dill. 

 Muse. 95, t. 15. f. 18 A (atypica). Lichen digitctus of our older 

 authors is not this, but a variety of the following species. Brit. 

 Exs.-. Mudd, Clad. n. 76 (juvenilia). 



From the preceding this is distinguished by its different habit, the 

 colour ol the more corticate podetia, and the incurved margin of the 

 scyphi. It is often somewhat macrophyllous at the base. The podetia, 

 which are 1-2 in. long, not unfiequeutly arise from the margins or the 

 surface of the leaflets, and are either naked or with a few smaller and 

 scattered leaflets chiefly towards the base or at the apices. In sterile 

 specimens they are often cornute or subulate. With us the apotheda 

 are rare. 



Hab. On putrid trunks of trees among mosses in wooded upland 

 districts. Distr. Local and rather scarce in W. and N. England, N. 

 Wales, and among the W. and N. Scottish Grampians ; not seen from 

 Ireland. B. M. : Malvern, Worcestershire ; Rhewgreidden, Merioneth- 

 shire ; Kildale Moor, Cleveland, Yorkshire ; Windermere, Westmoreland ; 

 near Whitehaven, Cumberland. Craig Calliach, Perthshire; Burcaldine, 

 Argyleshirn ; Glen Muick and Craig Cluny, Braemar, Aberdeenshire ; 

 Rothiemurchus Woods, and by Loch Linnhe, Inverness-shire. 



Form 1. trachytes Nyl. Lich. Scrmd. (1861) p. 61. Thallus 

 large at the base ; podetia short, simple, somewhat slender ; scyphi 

 regular, narrow. Apothecia small. Cromb. Grevilka, xv. p. 46. 

 Bceomyces bacillaris f. bracJiytes Ach. Meth. (1803) p. 329. 



Differs in the more developed basal thallus and in the slender, narrow, 

 usually substerile podetia. Our British specimens are only sparingly 

 spermogoniiferous. 



Hab. On old fir-trunks in upland wooded districts. Distr. Found only 

 among the N. Grampians, Scotland. B. M. : Mar Forest, Braemar, 

 Abmlppnsliire. 



