’ Ss a 
x er 
‘Seat 
160 CYCLOCARPINE [CETRARIA 
Ezxsice. Johns. n. 61; Larb, Lich. Hb. n. 163 ; Leight. n. 4; 
Mudd n. 49. 
Forms low dense tufts up to about 3 cm. in height. Though a 
fairly well-marked form, it is very closely connected with the species, 
and is sometimes spinous like the more developed f. acanthella. 
Hab. On the ground on moorlands in upland districts.—Distr. 
Frequent in moorland and hilly districts of Great Britain, rare in 
Treland.—B. M. Scilly Islands; Rough Tor, Cornwall; Dartmoor, 
Devonshire; Lewes, Sussex; Lydd, Kent; Hainault Forest, Essex ; 
Wokingham Heath, Bucks; Malvern, Worcestershire; Haughmond 
Hill, near Oswestry, and Longmynd, Shropshire; Cwm Bychan, 
Merioneth ; Breidden, Montgomeryshire; Black Edge, near Buxton, 
and Chatsworth, Derbyshire ; North Wootton, Norfolk ; near Beverly, 
Hainworth Moor, Battersby Moor and Ayton, Cleveland, Yorkshire ; 
Swinhope Fell, Northumberland ; near Kendal, Westmoreland ; Asby 
and Lamplugh, Cumberland; New Galloway, Kirkeudbrightshire ; 
Dalmahoy Hill and Pentland Hills, near Edinburgh; Ben Lawers, 
Craig Tulloch and Rannoch Moor, Perthshire ; Sidlaw Hills, Montrose 
links and near Cortachy, Forfarshire; Glen Dee and Glen Muick, 
Braemar, Aberdeenshire ; Hills of Applecross, Rossshire ; Killarney, 
Kerry; Mt. Errigal, Donegal. 
Form acanthella Nyl. Lich. Scand. p. 80 (1861).—Thallus 
similar to that of the species, but beset with denticulate spines 
and generally very dark in colour. Apothecia rare, lighter in 
colour than the thallus.—Leight. Lich. Fl. p. 98; ed. 3, p. 93. 
Var. acanthella Nyl. in Mém. Soe. Sci. Cherb. v. p. 100 (1857) ; 
Cromb. in Journ. Bot. viii. p. 96 (1870). Coralloides fruticuli 
specie fuscum, spinosum Dill. Hist. Muse. p. 112, t. 17, fig. 318 
(1741). Cornicularia spadicea var. acanthella Ach. Lich. Univ. 
p- 612 (1810). 
Exsicc. Johns. n. 62. 
Distinguished by the more spinous branches ; it is well-marked, 
though possibly a form due to growth conditions of greater illu- 
mination. 
Hab. On the ground, sand dunes, ete., among mosses in maritime 
and upland districts.—Distv. Rather uncommon throughout Great 
Britain.—B. M. Harting Combe, Sussex; Godalming, Surrey ; 
Clifton, Gloucestershire ; Dolgelly, Merioneth; Farndale, Yorkshire ; 
Prestwich Carr and West Allen Carrs, Northumberland; Baldovan 
Woods, Sidlaw Hills and Clova Mts., Forfarshire ; 5. of Lochnagar, 
Aberdeenshire ; Glen Nevis, Invernessshire ; Findhorn, Elginshire. 
16. C. odontella Ach. Syn. Lich. p. 230 (1814).—Thallus 
densely czespitose, the fronds short, plane, rather narrow and 
palmately branched, spinulose at the margins, chestnut- or dark- 
brown, paler at the base or sometimes red. Apothecia terminal, 
concolorous, the margin denticulate ; spores 7-10 w long, 4-5 pu 
thick.—Cromb. in Journ. Bot. xx. p. 272 (1882). Lichen 
odontellus Ach. Lich. Suec. Prodr, p. 213 (1788). 
Distinguished by the small size and by the flattened fronds. The 
only British specimen is sterile. 
Hab. Among mosses or rocks in alpine districts. —B. M. Cairntoul, 
Braemar, Aberdeenshire. 
