180 LICHENACEI. [CLATHNA. 



or very shortly branched; the branches obtuse, usually imperforate 

 and shortly denticulate at the apices. Spores 0,008-9 mm. long. 

 Cromb. Journ. Linn. Soc. Bot. xvii. p. 561. Cladina uncialis 

 f. obtusata Leight. Lich. Fl. ed. 3, p. 68. Cenomyce uncialis fl. 

 obtusata Ach. Lich. Univ. (1810) p. 559. Corattoides imperforatum 

 corniculis brevissimis crispis Dill. Muse. 100, t. 16. f. 12. 



The short (\ in. to 1 in. long), inflated, decumbent podetia, with their 

 thickened and frequently dark brown apices, characterize this form. In 

 more branched specimens the podetia are somewhat aggregate, but when 

 simpler they are often somewhat discrete, owing to the nature of the 

 habitat. The apothecia are extremely rare, and even the spermogones 

 are seldom visible. 



Hob. la peat bogs on upland and subalpine moorlands. Distr. Appa- 

 rently local and scarce in N. Wales, S. Scotland, among the Grampistns, 

 and in S.E. and N.W. Ireland. B. M. : Snowdon, Carnarvonshire. New 

 Galloway, Kirkcudbrightshire ; Craig Calliach and Moor of Rannoch, 

 Perthshire ; Glen Candlic and Ben Macdhui, Braemar, Aberdeenshire. 

 Kylemore, co. Galway ; Achavanagh, co. "Wicklow. 



4. C. amaurocraja Nyl. Not. Sallsk. pro F. et Fl. Fenn. Fdrh. 

 n. s. v. (1866) p. 111. Podetia slender, close, erect, glabrous, subu- 

 late, more or less branched, sparingly and narrowly scyphiferous, 

 straw-coloured or whitish straw-coloured ; scyphi dentato-cristate, or 

 subulato-spinulose at the margins, often proliferous, rarely perforate 

 at the axils (K , K(CaCl)-)- yellow). Apothecia somewhat small 

 or moderate, brown or pale-testaceous ; spores oblong, 0,009-12 mm. 

 long, 0,0035 mm. thick. Cromb. Lich. Brit. p. 22. Cladina 

 amaurocrcea Leight. Lich. Fl. p. 74, ed. 3, p. 67. Cladonia amauro- 

 crcm Mudd, Brit. Clad. p. 27. Capitularia am.T.urocra>a Florke in 

 Web. et Mohr, Beitr. ii. (1810) p. 334. As observed in Grevillea, 

 xi. p. 115, var. myriocrcea (? Florke) Mudd, Brit. Clad. p. 27, Exs. 

 n. 18, is referable to some condition of Cladonia furcata rather than 

 to this species ; but the specimens seen are imperfect. 



From the closely allied C. uncialis this, when well developed, is easily 

 known by the podetia being scyphiferous, more slender, and close. When 

 ascyphous, as it often occurs, it is apt to be confounded with that species, 

 though even then it must be regarded as distinct. With us the apothecia 

 are very rare, and the spermogones only occasionally present. 



Hab. On the ground in moist places amongst heaths in upland and 

 subalpine regions. Distr. Found sparingly among the Grampians, Scot- 

 land, and in N.W T . Ireland. B. M. : Rannoch Moor, Perthshire ; Ben- 

 naboord and Glen Dee (frt), Braemar, Aberdeenshire. Near Kylemore, 

 co. Galway. 



Subsp. C. destricta Nyl. ex Norrl. Sallsk. pro F. et Fl. Fenn. 

 Forh. xiii. (1873) p. 321. Podetia short, more or less verrucose, not 

 close, but vaguely directed, much branched, ascyphous, straw-coloured 

 or greenish-grey ; branches short, subulate or furcate at the apices. 

 Apothecia not seen. Cromb. Journ. Bot. 1876, p. 360, Grevillea, 

 xi.p. 115. Cladonia amaurocr&a f. destricta NyLScand.(1861) p. 59. 



