210 LICHENACEI. [ALECTORIA. 
sulphur-coloured ; branches very much divaricate, long, attenuate, 
concolorous or sparingly blackish at the apices (K_, CaClyy .aaish): 
Apothecia lateral, becoming brownish-black, the margin entire.— 
Cromb. Grevillea, xv. p. 79.—Alectoria ochroleuca var. cincinnata 
Leight. Lich. Fl. p. 88, ed. 3, p. 79. Lvernia ochroleuca b. cin- 
cinnata Fr. L. E. (1830) p. 22. Alectoria ochroleucu var. sarmentosa 
Cromb. Lich. Brit. p. 24. Alectoria surmentosa Gray, Nat. Arr. i. 
p. 408; Hook. FI. Scot. ii. p. 68; Sm. Eng. Fl. v. p. 227; Mudd, 
Man. p.70. Lichen ochroleucus With. Arr. ed. 3, iv. p. 46 pro parte. 
—aAs specimens in herbaria show, this was mistaken by our earlier 
and some later writers for A. sarmentosa (cfr. Cromb. Journ. Bot. 
1872, p. 232).—Brit. Exvs.: Cromb. n. 18. 
The thallus often bears large foveolate, and scrobiculate concolorous 
excrescences, and usually is here and there tinged of a bluish-black colour. 
The apothecia do not occur in this country, and the spermogones are very 
rarely seen. 
Hab. On the ground in alpine places, creeping loosely over mosses and 
the stems of Azalea procumbens —Distr. Very local, though somewhat 
plentiful on a few of the higher N. Grampians, Scotland.—B. M.: Ben- 
naboord, Morrone, Ben Macdhui, Cairngorm, Braemar, Aberdeenshire. 
b. Apothecia lateral: spores 8nz, small, colourless (Bryopogon Link. 
Handb. (1833) p. 164 pro parte). 
3. A. divergens Nyl. Lich. Scand. (1861) p. 71.—Thallus ceespi- 
tose, erect or prostrate, robust, rigid, and fragile, somewhat rounded 
or subangular, shining, often much branched, brownish-chestnut- 
coloured ; branches dichotomously diverging (K—, CaCl ie deep red)" 
Apothecia bright-brown, the margin usually crenulate or rough ; 
spores 0,008-10 mm. long, 0,0045-55 mm. thick.—Cromb. Journ. 
Bot.- 1873, p. 133; Leight. Lich. Fl. ed. 3, p. 78.—Cornicularia 
divergens Ach, Meth. (1803) p. 303. 
This is like larger states of Cetraria aculeata, from which, however, it is 
well distinguished by being more robust, not spinulose, by the medullary 
reaction with CaCl, and the nature of the spermogones. In the few 
specimens gathered in Britain the thallus is less developed than in those 
from Arctic regions, and is destitute of the white points which elsewhere 
are sometimes present, arising from the rupture of the cortical layer. 
The apothecia have as yet been detected only in N.E. Asia. 
Hab. On the ground among mosses in alpine places.—Distr. Found 
only on one of the higher N. Grampians, Scotland.—B. M.: Cairngorm, 
Braemar, Aberdeenshire, 
4, A. nigricans Nyl. Lich. Scand. (1861) p. 71.—Thallus cespi- 
toso-fruticulose, erect or ascending, rigid, somewhat rounded, dicho- 
tomously and intricately branched, livid- or chestnut-black, paler 
towards the base, opaque, branches more or less deflexed at the 
apices, the axils somewhat lacunoso-impressed (K aegétlons al bane’ 
CaCl) eddish”” Apothecia lateral, moderate, badio-brownish, the 
