STEREOCAULON. | STEREOCAULET. 121 
The sorediate apices of the podetia and their branches distinguish this 
form from the type. In the only fertile British specimen seen the apo- 
thecia are small and very sparingly present. 
Hab. On rocks and boulders in subalpine regions.—Distr. Local and 
scarce, having as yet been found only in N. Wales, among the Gram- 
pians, and in the N.W. Highlands of Scotland, though probably to be 
detected elsewhere.—B. M.: Cader Idris, Merionethshire. Ben Lawers, 
Perthshire ; Braemar, Aberdeenshire; hills of Applecross, Ross-shire. 
G. pulvinatum Flot. Lich. Sil. (1842) n. 16 y.—Thallus densely 
pulvinato-caespitose ; podetia short, fastigiately and intricately 
branched ; podetial granules turgid, nodulose, crowded. Apothecia 
small, extremely rare-—Cromb. Journ. Bot. 1882, p. 272.—Stereo- 
caulon paschale e. pulvinatum Scher. Spic. (1883) p. 274. Stereo- 
caulon tomentosum var. botryosum Cromb. Lich. Brit. p.17; Leight. 
Lich. Fl. p. 78, ed. 3, p. 71. Stereocaulon paschale y. alpinum 
var. botryosum Mudd, Man. p. 66. Stereocaulon botryosum Sm. Eng. 
Fl. v. p. 233.—Brit. Evs.: Leight, n. 387. 
In Herbaria frequently confounded with other species, more especially 
S. alpinum form botryosum, which apparently does not occur in Britain. 
It is loosely affixed to the substratum, and the granules are sometimes 
almost crustaceo-confluent. In this country, as elsewhere, it is very 
rarely seen fertile. 
Hab. On rocks and boulders in subalpine situations.— Distr, Rather 
local in N. Wales, N. England, among the Grampians, Scotland, and in 
S.W. Ireland.—B. M.: Cader Idris, Merionethshire; Llyn Howel and 
Snowdon, Carnarvonshire; Teesdale, Durham. Ben Lawers, Craig Cal- 
liach, Ben Vrackie, and near Loch EHagh, Rannoch, Perthshire; Morrone 
and Ben Macdhui, Braemar, Aberdeenshire; Ben Nevis, Inverness-shire. 
Connor Cliffs, co. Kerry. 
6. Thallus persistent at the base; podetia subsimple; cephalodia 
sessile, glomeruliform or verrucose. 
8. S. condensatum Hoffm. Deutsch. Fl. ii.(1795)p. 180.—Thallus 
rather small; podetia very short, or almost none, simple or sub- 
simple, somewhat robust, the axis at first slightly arachnoid and 
then more or less glabrous ; granules squamulose, cespitosely con- 
gested at the base, scattered on the podetia, crenulate, glaucous or 
greyish-white. Apothecia moderate, terminal, at length convex, 
often confluent, brownish or dark reddish-brown ; spores 3-7-septate, 
fusiformi-cylindrical, 0,020-36 mm. long, 0,0015-25 mm. thick.— 
Mudd, Man. p. 66; Cromb. Lich. Brit. p. 17; Leight. Lich. FI. 
p. 79, ed. 3, p. 71.— Brit. Hxs.: Mudd, n. 33; Leight. n. 295. 
The thallus often spreads extensively, forming an effuse, granulose 
crust, and the podetia are often almost entirely wanting. The cephalodia 
are verrucose, dark-greyish, adnate towards the base of the podetia, the 
gonimia glomerulosely arranged. The apothecia sometimes occur also on 
the basal granules, and the spermogones are frequent, with spermatia 
about 0,005 mm. long, scarcely 0,001 mm, thick. 
Hab. On the ground and on turf-covered walls in maritime, upland, 
