186 CYCLOCARPINEE | ALECTORIA 
spores ellipsoid, colourless, small, 7-8 » long, 5-6 w thick.— 
Mudd Man. p. 70; Cromb. Lich. Brit. p. 23; Leight. Lich. Fl. 
p. 86; ed. 3, p. 78. Muscus coralloides lane nigre instar sawxis 
adhzrens Dill. in Ray Syn. ed. 3, p. 65, n. 3 (1724). Usnea 
lanee nigree instar saxis adherens Dill. Hist, Muse. p. 66, t. 13, 
fig.8 (1741). Lichen bicolor Ehrh. Beitr. iii. p. 82 (1788) ; Engl. 
Bot. t. 1853. LD. lanatus Huds. Fl. Angl. p. 461 (1762) (non L.) ; 
Lightf. Fl. Scot. ii. p. 892; With. Arr. ed. 3, iv. p. 47. Corni- 
cularia bicolor Ach. Meth. Lich. p. 304 (1803); 8S. F. Gray Nat. 
Arr. i. p. 405; Hook. Fl. Scot. ii. p. 69 & in Sm. Engl. FI. v. 
p. 228. ; 
Exsicc. Cromb, n. 127 ; Mudd n. 39. 
Allied to A. jubata, but differs in the persistently darker colour 
and generally saxicolous erect or prostrate habit. The apothecia 
have been gathered only in the Himalayan Mts. The spermogones 
are minute, with spermatia 8 » long, °05 p thick. 
Hab. On rocks and boulders among mosses in upland and sub- 
alpine regions.—Distr. Frequent and sometimes abundant in hilly 
regions of W. and N. England, N. Wales and the Highlands of 
Scotland, rare in N.E. Ireland.—B. M. Helminton, Cornwall ; Hay 
Tor, Bovey Tracey, Dartmoor, Lustleigh Cleeve and Walkington, 
Devon; Capel Arthog, Llyn Bodlyn and Cader Idris, Merioneth ; 
Anglesea; Farndale, Yorkshire; Teesdale, Durham; Kentmere, 
Westmoreland ; New Galloway, Kirkcudbrightshire; Ben-A’an, near 
Taymouth, Corrie, Uachlar, Ben Lawers, Ben More and Rannoch, 
Perthshire ; Canlochan, Forfarshire ; Lochnagar, Aberdeenshire ; 
Craigellachie, Banffshire ; Ben Luighal, Sutherlandshire ; Antrim. 
7. A. divergens Nyl. Syn. Lich. p. 278 (1860) pro parte ; 
Lich. Scand. p. 71 (1861).—Thallus rigid, erect or prostrate, 
frequently branched, cylindrical or subangular, shining, brown- 
ish chestnut-coloured, the branches dichotomous, diverging 
(K—, CaCl medulla + red). Apothecia very rare, bright-brown, 
the margin usually crenulate or rough; spores 8 in the ascus, 
colourless, ellipsoid, small, 8-10 » long, 4°5-5°5 pw thick.— 
Cromb. in Journ. Bot. xi. p. 133 (1873); Leight. Lich. Fl. ed. 3, 
p. 78. Cornicularia divergens Ach. Meth. Lich. p. 303, t. 6, 
fig. 1 (1803). 
Not unlike Cetraria aculeata in outward appearance, but the 
thallus is generally stouter and never spinulose. It reaches its 
highest development in Arctic regions. Apothecia have not been 
found on British specimens ; they are recorded only from N.E. Asia. 
Hab. On the ground among mosses in alpine places.—B. M. 
Cairngorm, Braemar, Aberdeenshire, the only British locality. 
8. A. jubata Ach. Lich. Univ. p. 592 (1810) pro parte.— 
Thallus filiform, pendulous, subcylindrical, slightly compressed 
at the axils, smooth, much branched, more or less soraliate, 
olive-brown or brownish-grey to -black, the branches wavy, 
entangled. Apothecia rare, small, innate, plane or convex, the 
