144 LICHENACET. [cLaDonIa. 
15. C. cervicornis Scher. Enum. (1850) p. 195.—Thallus foliaceo- 
squamulose at the base ; leaflets large, laciniiform, crenate-or inciso- 
crenate, or variously multifid, ascending, firm, dark olive-green or 
glaucous-green above, whitish or brownish-black beneath ; podetia 
short, smooth or subverrucose, scyphiferous; scyphi simple or irre- 
gularly proliferous, more or less squamulose (K +-yellowish, CaCl—). 
Apothecia small, sessile, brownish-black.—Mudd, Brit. Clad. p. 4; 
Leight. Lich. Fl. p. 57, ed. 3, p. 54.—Cladonia gracilis subsp. cervi- 
cornis Mudd, Man. p. 54; Cromb. Lich. Brit. p. 19. Scyphophorus 
cervicornis Sm. Eng. Fl. v.tp. 242; Tayl.in Mack. Fl. Hib. ii. p. 81. 
Lichen cervicornis Ach. Prodr. (1798) p. 184, Eng. Bot. t. 2574. 
Coralloides scyphiforme, foliis alcicorniformibus cartilaginosis Dill. 
Muse. 87, t. 14. f. 12 B. 
Though generally resembling less proliferous states of the preceding 
species, this differs in the more developed laciniz, the shorter podetia, 
and in the chemical reaction with K. The thallus at the base is densely 
ceespitose, with the leaflets nearly erect, somewhat thickened, in old 
ants rimoso-reticulate above and the podetia are often but little deve- 
Tispad, or entirely wanting (form basima Cromb.). The apothecia are 
sessile on the margins of the scyphi, and are either simple or conglo- 
merate, becoming blackish in age. 
Hab. On the ground among rocks and on heaths in maritime and 
upland regions— Distr. General and usually plentiful in hilly and moun- 
tainous tracts of Great Britain and probably also of Ireland ; rare in the 
Channel Islands.—B. M.: Quenvais, Island of Jersey ; Pleinmont, Guern- 
sey. Rusthall Common, Kent; Hay Tor, Dartmoor, and Bolt Head, 
Devonshire ; Withiel and Penzance, Cornwall; Bathampton, Somerset- 
shire; Worcester Beacon, Worcestershire ; Buxton, Derbyshire; Rhew- 
greidden, Merionethshire ; Llanberis, Cardiganshire ; Island of Anglesea ; 
Teesdale, Durham. New Galloway, Kirkcudbrightshire; Moffat, Dum- 
friesshire ; Pentland Hills, near Edinburgh; Appin, Argyleshire; The 
Trossachs, Rannoch, and Craig Calliach, Perthshire; Lion’s Face and Ben- 
naboord, Braemar, Aberdeenshire; Glen Nevis, Inverness-shire; near 
Lairg, Sutherlandshire ; hills of Applecross, Ross-shire. Carig Mt. and 
Killarney, co. Kerry ; Kylemore, co. Galway. - 
Form stipata Nyl. Flora, 1876, p. 239.—Squamules at the base 
elongate, sublinear, crenato-incised and deeply divided, erect, stipate ; 
podetia and apothecia as in the type.—Cromb. Journ. Bot. 1876, 
p- 860; Leight. Lich. Fl. ed. 3, p. 55, 
Differs only in the basal thallus, The podetia and apothecia very 
rarely occur. 
Hab. On the ground among rocks in upland districts— Distr. Rare 
and local in N. Wales, the Central Grampians and the N.W. Highlands, 
Scotland, and in N.W. Ireland (Kylemore, co. Galway).—B. M.: Aber- 
dovey, Merionethshire. Loch Eagh, Rannoch, Perthshire; hills of Apple- 
cross, Ross-shire. 
16. C. sobolifera Nyl. Flora, 1873, p. 66; Not. Sallsk. pro F. et 
Fl. Fenn. Forh. n. s. v. (1866) p. 176 (note).—Thallus foliaceous 
at the base; leaflets somewhat narrow, inciso-crenate, cespitose, 
