56 COLLEMACET. [CoLLEMA. 
Tunbridge Wells, Kent; St. Leonard's Forest and Henfield, Sussex ; New 
Forest, Hampshire; Barmouth, Merionethshire ; Ingleby, Cleveland, 
Yorkshire. Barcaldine, Argyleshire ; near Killin and Aberfeldy, Perth- 
shire ; Loch Linnhe, Inverness-shire. O’Sullivan’s Cascade and Derry- 
cuintry, Killarney, co. Kerry. 
23. C. fasciculare Ach. Lich. Univ. (1810) p. 639.—Thallus sub- 
crenato-lobulate, brownish-green or dark-green (I+ blood-red) ; 
lobules rounded, usually in erect, small, subpedicellate tufts, dilated 
upwards. Apothecia small, very numerous and crowded, biatorine, 
somewhat convex, reddish, the margin thin, undulate ; spores fusi- 
form, normally 3- sometimes 1-septate, 0,016-29 mm. long, 0,00-4—6 
mm. thick.—Collema fasciculare Hook. Fl. Scot. ii, p. 71; Sm. 
Eng. Fl. v. p. 210; Cromb. Journ. Bot. 1874, p. 334; Leight. Lich. 
Fl. ed. 3, p. 24. Enchyliwm fasciculare Gray, Nat. Arr. i. p. 398. 
Lichen fascicularis Linn. Mant. ii. (1771) p. 153; Lightt. Fl. Scot. 
ii. p. 841; Huds. Fl. Angl. ed. 2, p. 536; With. Arr. ed. 3, iv. 
p. 76; Eng. Bot. t. 1162. Synechoblastus conglomeratus (Hoffm.) 
Mudd, Man. p. 43. Collema conglomeratum Cromb. Lich. Brit. p. 6; 
Leight. Lich. Fl. p. 23. Lichenoides gelatinosum palmatum, tuber- 
culis conglomeratis Dill. Muse. t. 19. f. 27. 
Distinguished by the thalline lobules of the thallus being fasciculate, 
except (in entire specimens) at the immediate circumference, where they 
are crenate and sterile. ‘The apothecia are so crowded as sometimes to 
render the thallus invisible except when moistened; so that in dry 
weather it is very apt to be overlooked. 
Hab. On the trunks of old trees in wooded upland districts.— Distr. 
Local, and not common where it occurs, in the mountainous tracts of W. 
Britain ; not detected in Ireland. B.M.: St. Leonard’s Forest and Hen- 
field, Sussex; near Barmouth, Merioneth; Nant Glyn, Denbighshire ; 
Ambleside, Westmoreland. Loch Katrine, Kenmore, and Den of Aber- 
feldy, Perthshire ; Clova, Forfarshire. 
24, C. multipartitum Sm. Eng. Bot. xxxvi. (1814) t. 2582.— 
Thallus laciniate, radiate, olive-brown or olive-black ; laciniz nar- 
row, multifid, somewhat convex, undulate and twisted, lobato- 
\wvided at the apices, the lobes divergent. Apothecia moderate, 
plane or convex, dark-reddish, the thalline margin thickish, entire ; 
spores cylindrical, often somewhat curved, normally 3-septate and 
variously oleoso-locular, 0,028-48 mm. long, 0,007 mm. thick; 
paraphyses thick, pauci-articulate—Nyl. Syn. i. p. 116, 6. ii. f. 8; 
Sm. Eng. Fl. v. p. 210; Tayl. in Mack. Fl. Hib. ii. p.108: Cromb. 
Enum. p. 7; Leight. Lich. Fl. p. 26, ed. 3, p. 24.—Synechoblastus 
multipartitus Mudd, Man. p. 43.—Brit. Hvs.: Bohl. n. 70. 
_ From states of C. melenum, especially form jacobeifolium, with which 
it might be confounded, this is distinguished by the radiating thallus 
which is often centrifugal, and by the convex, undulate, or twisted 
lacinie. The lacinis ure sometimes rather discrete, and radiate con- 
tinuously from the centre, while at other times they are more or less 
broken up and dispersed. As observed by Nylander (Syn. p. 117), the 
internal structure of the thallus is nearly similar to that of C. cheileum, 
