154 LICHENACEI. [t'LADOSIA. 



Differs merely in the snow-white colour of the podetia, which become 

 brownish at the apices. The only British specimens seen are sterile. 



Hab. On mossy rocks in maritime and upland tracts. Distr. Very 

 local and scarce in N. England and the S.W. Highlands of Scotland. 

 B. M. : Windermere, Westmoreland. Head of Loch Creran, Barcaldine. 

 Argyleshire. 



Form 2. foliosa Florke, Clad. (1828) p. 156. Podetia erect or 

 decumbent, more or less sprinkled with minute leaflets. Leight. 

 Lich. Fl. p. 56, ed. 3, p. 54 ; Cromb. Grevillea, xi. p. 113. Clci- 

 donia furcata E.pungens c. foliosa Mudd, Brit. Clad. p. 24. Corcii- 

 loides fruticuU specie cctndicans, corniculis rufescentibus Dill. Muse. 

 110, t. 16. f. 30 c, D. Brit.Exs,: Mudd, Clad. n. 56; Leight. 

 n. 374. 



Except in the foliaceous podetia this form is also entirely similar to 

 the type. It appears to be very rarely fertile, the apothecia when present 

 being usually simple and dark-brown. 



Hab. On the ground in upland situations. Distr. Somewhat local, 

 though plentiful where it occurs, in England ; not yet seen from Scotland 

 or Ireland. B. M. : Shiere, Surrey; Lydd, Kent: Basingstoke, Hants; 

 near Cheltenham, Gloucestershire ; Malvern, Worcestershire; Pentregaer, 

 Oswestry, Shropshire ; near Redcar, Yorkshire ; near Hartlepool, Dur- 

 ham ; Windermere, Westmoreland. 



Subsp. C. muricata Cromb. Grevillea, xi. p. 113. Podetia some- 

 what turgid, rugose, sparingly branched, glabrous or squamulose, 

 simple and obtuse or shortly furcate at the apices. Apothecia small, 

 dark-brown. Cladonia furcata var. muricata Nyl. Syn. i. p. 207. 

 Cmomyce inuricuta Del. in Dub. Bot. Gall. ii. (1830) p. 622. Lichen 

 deformis Huds. Fl. Angl. p. 458 pro parte. Coralluides crassius 

 subincanum, calicibus dentatis Dill. Muse. 95, 1. 15. f. 18 B (deformed 

 state). Lichenoides tubulosnm tnayis ramosum, tnaxime difforme 

 Dill, in Ray, Syn. ed. 3, p. 68, n. *23.Brit. Exs. : Leight. n. 369. 



This is a more robust and less-branched plant, having the podetia either 

 erect or prostrate, with the cortex rugoso-unequal, usually more or less 

 equamulose (form lepidota Del.), and occasionally variously difform. It 

 somewhat resembles- states of subsp. C. racemosa, but it has with K the 

 reaction of C. punt/ens, of which it forms a well-marked subspecies. The 

 apothecia are extremely rare in our British specimens. 



Hab. On the ground in upland situations. Distr. Local, though some- 

 what plentiful where it occurs, in S., Central, and \V. England. B. M. : 

 Shiere, Surrey ; Basingstoke, Hants ; near Amberley, Sussex ; Thetford 

 Koad, Gloucestershire ; Bathampton Downs, Somersetshire ; Charnwood 

 Forest, Leicestershire. 



23. C. crispata Nyl. Xot. Sallsk. pro F. et Fl. Fenn. Forh. n. s. 

 v. (1866) p. 110. Thallus foliaceous at the base; leaflets small, 

 incised and crenate, greyish- or greenish-white, sometimes evanes- 

 cent ; podetia somewhat turgid, glabrous, sometimes 3-4-, usually 

 repeatedly, branched, concolorous or pale-greyish or stibspadiccous, 



