56 COLLEMACEr. [COLLEMA. 



Tunbridge Wells, Kent; St. Leonard's Forest and Henfield, Sussex ; New 

 Forest Hampshire; Barmouth, Merionethshire; Ingleby, Cleveland, 

 Yorkshire. Baroaldine, 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. 039. 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, 0,004-6 

 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. Enchylium fasciculare Gray, Nat. Arr. i. p. 398. 

 Lichen fascicularis Linn. Mant. ii. (1771) p. 153; Lightf. Fl. Scot. 

 ii. p. 841 ; Huds. Fl. Angl. ed. 2, p. 536 ; With. Arr. ed. 3, iv. 

 p. 76; Eng. Bot. t. 1162. Synechoblastus conglomerate (Hoffm.) 

 Mudd, Man. p. 43. Collema conglomeratum Cromb. Lich. Brit. p. 6 ; 

 Leight. Lich. Fl. p. 23. Lichenoides gelatinosum palmatum, tuber- 

 culis conglomerate Dill. Muse. t. 19. f. 27 A. 



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. 



Hob. 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 ; lacinise nar- 

 row, multifid, somewhat convex, undulate and twisted, lobato- 

 Mvided 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, t. 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. Exs. : Bohl. n. 70. 



From states of C. melanum, especially form jacobaifolium, with which 

 it might be confounded, this is distinguished by the radiating thallus 

 which is often centrifugal, and by the convex, undulate, or twisted 

 laciniae. The lacinise are 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, 



