140 LICHENACET. [cLaponza. 
Cenomyce gracilis Hook. F1. Scot. ii. p. 63 ; Tayl. in Mack. Fl. Hib. ii. 
p. 82. Scyphophora ecmocyna (3. gracilis Gray, Nat. Arr. i. p. 421. 
Lichen gracilis Linn. Sp. Pl. (1753) p. 1152; Huds. Fl. Angl. 
p. 457; Leight. Fl. Scot. ii. p. 874; With. Arr. ed. 3, iv. p. 37; 
Eng. Bot. t. 1264. Coralloides scyphiforme serratum elatius, cau- 
libus gracilibus glabris Dill. Muse. 88, t. 14. f. 13c¢,p. Lichenordes 
pyxidatum cinereum elatius, ramulis pyxidatum desinentibus Dill. 
in Ray, Syn. ed. 3, 69. 32.—Brit. Evs.: Leight. n. 296; Mudd, 
nos. 10, 11, & 16 (pro parte), Clad. nos. 34, 37; Larb. Lich. Hb. 
n. 207. 
A very variable plant. The form here described is Cladonia chordalis 
Florke, Clad. p. 34. The basal thallus is rarely visible except in young 
plants, becoming for the most part speedily obsolete. It is a social 
plant, often spreading extensively, with the podetia 2-4 in. long, simple 
or more or less branched, and frequently blackish at the base. The apo- 
thecia are rare; when present they are numerous and occasionally con- 
glomerate. 
Hab. Among mosses on the ground and on rocks in maritime and 
upland districts.—Distr. General and common in most parts of Great 
Britain and probably also Ireland ; rare in the Channel Islands.—B. M.: 
Islands of Guernsey and Sark. Wootton Common, Norfolk; Epping 
Forest, Essex; Lydd, Kent; Dartmoor, Devonshire; near Penzance, 
Cornwall; Wokingham Heath, Berkshire; Worcester Beacon, Worces- 
tershire; Charnwood Forest, Leicestershire; Barmouth and Dolgelly, 
Merionethshire ; Island of Anglesea; Cleveland and Farndale, Yorkshire; 
Eglestone, Durham; The Cheviots, Northumberland ; Lamplugh, Cum- 
berland. New Galloway, Kirkeudbrightshire; Manor Head, Peebleshire ; 
Largs, Ayrshire; Barcaldine, Argyleshire; Glen Lochay, Glen Ample, 
Blair Athole, and Rannoch, Perthshire; Kinnordy and Kirriemuir, For- 
farshire ; Durris, Kincardineshire ; Glen Dee, Braemar, Aberdeenshire ; 
Glen Nevis and Rothiemurchus, Inverness-shire; ‘Forres, Elginshire ; 
Applecross, Ross-shire. Near Cork; Ballynascreen Mt., co. Tyrone; 
Turk Mt., Killarney, co. Kerry. 
Form 1. abortiva Scher. Spic. (1823) p.33.—Podetia subuliform, 
recurved or hooked at the apices, and there verrucose, infuscate : 
substerile.-—Mudd, Brit. Clad. p. 17; Leight. Lich. Fl. p. 63, ed. 3, 
p. 59; Cromb. Grevillea, xi. p. 112.—Brit. Hws.: Mudd, Clad. 
n. 36. 
Probably an accidental state, resulting from the abortive apothecia 
deforming the podetia. 
Hab. On the ground in upland situations.—Distr. Seen only from N. 
England and the Central Grampians, Scotland ; no doubt occurring else- 
where.—B. M.: Highcliffe, Cleveland, Yorkshire. Rannoch, Perthshire. 
Form 2. spinulifera Cromb.—Podetia slender, dark spadiceous, 
somewhat rugulose, with frequent short spinules ; scyphi with the 
margins spinulose. 
A peculiar and probably accidental form, analogous to var. spinosa 
of C. furcata. The only: specimen yet gathered is sterile. 
Hab, On moors in upland situations—Distr. Found only in S8.W. 
England.—B, M.: Near Newton Abbot, S. Devon. 
