276 LICHEN' \CET. [eICASOT.IA. 



Lochay, and Kenmore, Perthshire ; Clova, Forfarshire; Lochaber, Inver- 

 ness-sliire. Dinis Island, KiUarney, co. Kerry; Glenarm, co. Antrim. 



2. R. laetevirens Leiglit. Lir-h. Fl. (1871) p. 121.— Thallus orbi- 

 cular, exi)anded, scarcely rigid, smooth or rugnlose, somewhat 

 shining, laciniato-lobed, bright-green or pale-brown, or lurid ; 

 beneath tomentose, pale, the rhizinse concolorous or white, ecyphel- 

 late ; lobes roundly crenate and undulate at the margins, cyphellae 



none (K~, CaCl~), Apothecia large, scattered, reddish, the margin 



granulato-rugulose, inflexed ; spores fusiform, 1-septate, at length 

 pale-brown, 0,026-4-1 mm. long, 0,009-11 mm. thick. — Leight. 

 Lich. Fl. ed. 3, p. 113. — Lichen IcPtcvirens Lightf. Fl. Scot. ii. (1777) 

 p. 852 ; Eng. Bot. t. 294 ; With. Arr. ed. 3, iv. p. 58. RicasoUa 

 herhacea Cromb. Lieh. Brit. p. 32. Sticta herhacea Gray, Xat. Arr. 

 i. p. 431 : Mudd, ^lan. p. 91, t. ii. f. 27. Parmelia lierhacea Hook. 

 Fl. Scot. ii. p. 52 ; Sm. Eng. Fl. v. p. 200 ; Tayl. in Mack. Fl. Hib. 

 ii. p. 141. Lichen lierbacetts Huds. Fl. Angl. ed. 2 (1778) p. 544 ; 

 Eng. Bot. t. 294 ; With. Arr. ed. 3, iv. p. 58. lichenoides Irefe- 

 virens, scutellis fidvis Dill. Muse. 195, t. 25. f. 98, Lichenoides 

 arhoreum cinereo-virens, tenue et hn'g uhique, scut His minoribus Dill, 

 in Ray, Svn, ed. 3, p. 73, n. 64. — B)-it. Kvs. : Leight. n. 75 ; Cromb. 

 n. 40 : Dicks. Hort. Sic. n. 23 : Larb. Lich. Hb. n. 326. 



Also a widely expanded plant, though not so much as the preceding. 

 The thallus, which is somewhat thinly membranaceous, is of a bright 

 green colour, but in drying it becom':'S greyi«h-green and then lurid- 

 brown. The apothecia are common, as are also the spermogones, which 

 are similar to those oi H. aniplissima. 



Hah. On the trunks of old trees, and occasionally ou mossy boulders, 

 in maritime and upland situations. — Distr. Geueral and common in the 

 hilly and mountainous regions of Great Britain ; rare in W. Ireland and 

 the Channel Islands ; abundant in the S.W. Highland^, Scotland. — B. M. : 

 Near Ruzel, Islaud of Jersev ; Shankliu and Appuldurconib, Isle of Wight. 

 New Forest, Hampshire ; Ivy Bridge, South Brent, near Totnes, Beckey 

 Falls, and near Haberton, S. Devun ; Bocouuoc and St. Minver, Cornwall ; 

 Bryer Island, Scilly ; Dynevor Castle, Carmarthenshire : Charnwood 

 Forest, Leice.stershire ; Derbyshire ; near Dolgelly, Aberdovey, and Bar- 

 mouth, Merionethshire; Bettw.s-y-Coed, Denbighshire: Island of An-rle- 

 sea : Baysdale, Cleveland, Yorkshire ; near Eiilestone, Durham: Winder- 

 mere and near Stockgill, Westmoreland : Calder Abbey, Cumberland. 

 New Galloway, Kirkcudbrightshire ; Largs, Ayrshire ; near Inverary, 

 Barcaldine, and Appin, Argyleshire : The Trossachs, Bracklin Falls. Glen 

 Lochay, and Craighall, Perthshire ; Clova, Forfixrshire : Craig Cluuy, 

 Braemar, Aberdeenshire ; Lochaber, luverness-sliire ; Cawdor Woods, 

 Nairn : Applecross, Ross-shire. Killarney and Cromaglown, co. Kerry ; 

 near Kylemore, co. Galway. 



Tribe XV. PELTIGEREI Xvl. Mem. Soc. Cherb. ii. (1854) 

 p. 13 ; Syn. i. p. 315 :" Flora, 1882, p. 457. 



Thallus frondosely dilated, membranaceous, the cortical layer dis- 

 tinctly cellular, usually wanting beneath : gonidial laycM- consisting 

 of gonidimia, or more frequently of gonimiu. Apothecia peltiform, 



