CLADONIA | CLADONIACE® 435 
the tips.—Cromb. in Grevillea xi. p. 112 & Monogr. i. p. 132. 
C. pyxidata var. pityrea Nyl. ex Le Jolis in Mem. Soc. Sci. Nat. 
Cherb. vi. p. 241 (1858); Mudd Brit. Clad. p. 15 (inel. ff. 
seyphifera, fascicularis, fimbriatula and phyllophora); Leight. 
Lich. Fl. p. 60 ; ed. 3, p. 57 (incl. var. decorticata) ; var. symphi- 
carpa Cromb. (non Ach.). & subsp. pityrea Cromb. Lich. Brit. 
p. 18 (1870). ©. squamosa var. decorticata Mudd Man. p. 56 
(1861) (? Scher.). OC. Lamarkii Ny). in Flora lviii. p. 447 (1875) ; 
Cromb. in Journ. Bot. xiv. p. 360 (1876) & Monogr. i. p. 133 ; 
Leight. Lich. Fl. ed. 3, p. 54.  Coralloides parum ramosum, 
tuberculis fuscis Dill. Hist. Muse. p. 97, t. 15, fig. 20 (1741). 
Capitularia pityrea Floerk. in Mag. Naturf. Fr. Berlin ii. p. 135 
(1808). Cenomyces pityrea f. decorticata Ach. Syn. Lich. p. 254 
(1814). 
Ezxsicc. Johns. nos. 287, 289 (f£. denudata) ; Larb. Cesar n. 8 ; 
Mudd Clad. n. 16 pro parte, 27-29 and 38. 
A variable species with somewhat naked whitish podetia, it is not 
unlike a small form of C. sqwamosa in general habit, but frequently 
seyphiferous. The podetia are usually narrow and more furfuraceous 
than those of C. pyxidata and more granular than C. fimbriata. The 
apothecia are small and sessile, or subpedicellate and large. Johnson’s 
specimen, f. denudata, includes podetia very similar to those of 
C. pityrea with others that are sparsely squamulose. There is no 
specific difference between the two species C. pityrea and C. Lamarkii 
except a slight reaction with potash recorded for the latter. The 
respective forms hololepis and Isignyt are also alike in being more 
squamulose than the species. 
Hab. On the ground among mosses and on dead stumps of trees.— 
Distr. Local and scarce throughout the British Isles.—B. M. Noir- 
mont, Jersey ; Helmentor and Bodmin, Cornwall; Dartmoor, Devon ; 
New Forest, Hants; Chiddingly Wood and Tunbridge Wells, Sussex ; 
Lounsdale, near Roseberry, Ayton Moor and Black Banks, Cleveland, 
Yorkshire; Weardale, Durham; New Galloway, Kirkcudbrightshire ; 
Appin, Argyll; Rannoch, Perthshire; near Ballater, Aberdeenshire ; 
Loch Linnhe, Invernessshire ; Kylemore, Galway. 
Form hololepis Cromb. in Grevillea xi. p. 112 (1883) & 
Monogr. i. p. 133.—Podetia short, squamulose-furfuraceous, the 
squamules fragile and more or less pulverulent.—Var. hololepis 
Floerk. Clad. Comm. p. 83 (1828). C. pywidata var. pityrea ff. 
hololepis and d@Insignyi Mudd Brit. Clad. p. 16 (1865) (non exs. 
n. 33). C. Lamarkii f. Isignyi Nyl. in Flora lviii. p. 447 (1875) ; 
Cromb. Monogr. i. p. 134. Cenomyce Isignyi Del. ex Nyl. 1. ¢. 
Eesicc. Johns. n. 288; Larb. Lich. Hb. without a number. 
Hab. On the ground among heaths or mosses in maritime and 
upland regions.—Distr. Rare in the Channel Islands, N. England 
and the Grampians, Scotland.—B. M. Grisnez Common, Jersey; 
Turner’s Hill, Sussex; Eastgate, Weardale, Durham; near Falls of 
Tummel and Glen Lochay, Killin, Perthshire; Barcaldine, Argyll. 
15. C. acuminata Norrl. in Medd. Siillsk. Faun. & Fl. Fenn. 
i, p. 12 (1876).—-Primary thallus of thickish squamules, some- 
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