ALECTORTA.] ALECTORIET. 209 
Grows in large tufts with the thallus at length free, is often sprinkled 
with small whitish soredia, and has the fertile branches thicker. It 
varies somewhat in the degree of blackness with which its normally pale 
yellow colour is diversified, this being confined to the apices of the 
branchlets, as is usually the case with us, or extending, over the greater 
portion of the thallus, asin Arctic regions. In Great Britain the apothecia 
are extremely rare, having been seen in only a-single specimen. The 
spermogones, which are seldom present with us, are minute, punctate, 
eee within, with spermatia 0,007-8 mm. long, scarcely 0,001 mm. 
ick. 
Hab. Among mosses on gravelly soil in alpine places. Distr. Confined 
to some of the higher Grampians, Scotland, on or near their summits.— 
B. M.: Cairngorm and Cairntoul, Braemar, Aberdeenshire ; ? Clova Mts., 
Forfarshire. | 
Form tenuior Cromb. Journ. Bot. 1872, p. 232.—Thallus smaller, 
decumbent, the branches more slender, somewhat entangled and 
concolorous at the apices. Apothecia small, pale reddish-brown.— 
Leight. Lich. Fl. ed. 3, p. 79.—Lichen sarmentosus Eng. Bot. 
t. 2040 (smaller fig.). 
This form depends no doubt upon the habitat. It bears a general re- 
semblance except in colour to the terminal branchlets of var. cincinnata 
of A. sarmentosa, to which belongs the specimen from Morrone cited in 
Journ, Bot. 7, c. and quoted in Leight. Lich. Fl. p. 88as var. crinalis. In 
the only specimen seen there is but a single young apothecium visible, 
which is rather lateral than pseudo-terminal. 
Hab. On sterile ground in alpine places.—Distr. Seen only from one 
of the loftier mountains of the N. Highlands of Scotland.—B. M.: Ben 
Luighal, Sutherlandshire. 
2. A. sarmentosa Ach. Lich. Univ. (1810) p. 595.--Thallus 
pendulous or prostrate, elongate, complicate, very much and remotely 
branched, compressed at the axils, whitish-straw-coloured, the 
apices attenuate, long, concolorous (K_, K (CaCl)p) aaien) 
Apothecia smail, lateral, badio-reddish or brown; spores 3-4ne, 
0,015-36 mm. long, 0,014-80 mm. thick.—Cromb. Journ. Bot. 
1875, p. 140; Leight. Lich. Fl. ed. 3, p. 79.—Lichen sarmentosus 
Ach. Vet. Ak. Handl. 1795, p. 212,t. 8. f. 2. ? Usnea loris longis 
dichotomis, extremitatibus tenuioribus Dill. Muse. 59, t. 11. f. 2. 
Distinguished by the form of the thallus and the situation of the apo- 
thecia, The thallus, which varies in thickness, is rounded or here and 
there somewhat compressed, smooth or more or less lacunoso-foveolate, 
with the branches divaricate or dichotomous. Our only known British 
specimen belongs to the usual alpine and thicker condition. It has only 
a few apothecia and no spermogones. 
Hab. Among mosses on the ground in alpine situations. — Distr. 
Known only from one of the N. Grampians, Scotland.—B. M.. Cairn- 
gorm, Banffshire. 
Var. J. cincinnata Nyl. Syn. i. (1860) p. 282 ; Flora, 1869, p. 244. 
—Thallus prostrate, sarmentose, intricate, unequally compressed, 
thickened, impresso-lacunose, remotely branched, pale greenish 
P 
