115 LICHENACEI. [STEREOCATLON. 
the axis naked and the granules almost entirely pulverulent. They are 
quite sterile as in W. France, the only other region in which the plant 
has hitherto been detected. 
Hab. Among mosses on granitic boulders in upland districts.—Distr. 
Sparingly among the Central Grampians, Scotland.—B. M.: Near Loch 
Eagh, Rannoch Moor, Perthshire. 
3. §. paschale Fr. Stirp. Femsj. (1825) p. 35.—Thallus mode- 
rate or somewhat large; podetia stipate or subdispersed, erect or 
subdecumbent, very much branched, the axis somewhat compressed, 
at first arachnoid, speedily becoming nearly glabrous; podetial 
granules squamulose, crenate, greyish-white or whitish. Apothecia 
moderate, terminal or subterminal, plane or convex, brown or dark- 
brown; spores usually 3-, sometimes 5-9-septate, fusiformi-cylin- 
drical, 0,018-40 mm. long, 0,0935-45 mm. thick.—Nyl. Syn. i. 
p. 242, t. 7. ff. 18-28; Cromb. Grevillea, xv. p. 15; Lich. Brit. 
p- 17 pro parte; Leight. Lich. Fl. p. 77, ed. 3, p. 70 pro parte.— 
Lichen paschalis Linn. Sp. Pl. (1753) p. 1153 pro parte. 
As already stated, S. coralloides has for the most part been confounded 
with this by British authors. The podetia are but loosely adherent to the 
substratum, and often become nearly free. From S. coralloides it differs 
also in the podetia being stipate (not ceespitose) and in the granules 
being smaller and less distinctly dactyloid-divided. It is essentially a 
plant of cold climates, where it frequently spreads extensively ; but in 
this country it is one of our rarest lichens. The apothecia are not very 
numerous, and are usually situated at or near the apices of the podetia. 
The cephalodia are verrucose, greyish, with the gonimia glomerulose, 
often moniliform. The spermogones are not uncommon, with spermatia 
0,0045-55 mm. long, about 0,001 mm. thick. 
Hab. Among mosses on rocks and the ground in alpine tracts.—Distr. 
Very sparingly among the N. Grampians, Scotland.—B. M.: Upper Glen 
Dee, Braemar, Aberdeenshire. 
4. S. evolutum Graewe ev Fr. fil. Bot. Not. 1865, p. 181.— 
Thallus somewhat small or moderate ; podetia ceespitose, very much 
and divaricately branched, especially towards the apices, glabrous; 
podetial granules ramuloso-divided, stipate and very much crowded 
at the apices, greyish-glaucous or whitish. Apothecia terminal, 
moderate or somewhat large, at first somewhat plane and thinly 
margined, pale- or dark-brown; spores firm, oblong or oblongo- 
fusiform, obtuse, 3-septate, 0,018-28 mm. long, 0,005—7 mm. thick. 
—Cromb. Journ. Bot. 1876, p. 359; Leight. Lich. FI. ed. 3, p. 72. 
This also has been confounded with S. paschale.— Brit. Eus.: 
Cromb. n. 120. 
Intermediate between 8S. coralluides and S. paschale, but sufficiently 
distinguished from both by the constantly 3-septate spores. The podetia 
are usually suberect, pretty closely adherent to the substratum, and in 
large plants less aggregate. The apothecia in old plants become tuber- 
culato-difform, and often burst asunder. The cephalodia (which are not 
very frequent) and the spermogones are as in S. coralloides, 
Hab. On rocks and walls in maritime and mcuntainous districts, — 
