140 CYCLOCARPINE® [PARMELIA 
Nat. Arr. i. p. 442; Hook. Fl. Scot. ii. p. 55 & in Sm. Engl. 
Fl. v. p. 199; Tayl. in Mackay Fl. Hib. ii. p. 143; Mudd Man. 
p- 102; Cromb. Lich. Brit. p. 34; Leight. Lich. Fl. p. 134; 
ed. 3, p. 124.  Lichenoides imbricatum viridans, scutellis badiis 
Dill. Hist. Muse. p. 180, t. 24, fig. 75 a (1741). Lichen centri- 
jfugus Huds. Fl. Angl. p. 445 (1762) (non Linn.); Lightf. FI. 
Scot. ii. p. 814; With. Arr, ed. 3, iv. p. 32 pro parte. L. con- 
spersus Ehrh. ex Ach. Lich. Suec. Prodr. p. 118 (1798); Engl. 
Bot. t. 2097. 
Exsicc. Cromb. n. 26; Johns. n. 303; Larb. Cesar. n. 65; 
Leight. n. 78. 
The thallus is normally orbicular, but it may spead extensively 
and become more irregular in outline. Towards the centre the lobes 
are frequently more divided and somewhat convex, and tend to 
become isidiose. The spermogones are black and irregularly scattered, 
with spermatia 5-6 p long, and 1 p thick. 
Hab. On the trunks of old trees or palings, and on boulders.— 
Distr. General and common throughout the British Isles, especially 
in mountainous districts —B. M. Jersey; Sark; near Penzance and 
Helminton, Cornwall; Dartmoor, Ivy Bridge and Temple Moor, 
Devon; Westerham, Kent; Malvern Hills, Worcestershire; Charnwood 
Forest, Leicestershire; near Oswestry, Shropshire; Llanbedr, Bar- 
mouth, and Cader Idris, Merioneth ; Beddgelert and Bangor, Carnar- 
vonshire ; Llandyssil, Cardiganshire ; Beaumaris, Anglesea; Teesdale, 
Durham; near Kendal, Westmoreland; New Galloway, Kirkeud- 
brightshire ; near Moffat, Dumfriesshire; Ayrshire; King’s Park, 
Stirling; Inverary, Crinan Canal and Appin, Argyll; Loch Ard, Ben 
Lawers and Aberfeldy, Perthshire ; Glen Cluny, Braemar, Aberdeen- 
shire ; Applecross, Rossshire ; Dunkerron, Kerry; Louisburgh, Mayo. 
Form isidiata Leight. Lich. Fl. p. 135 (1871).—Thallus 
covered with densely crowded isidia except towards the circum- 
ference.—Leight. Lich. Fl. ed. 3, p. 125. Imehenoides &e. Dill. 
l. c. fig. 75 B.  Imbricaria conspersa f. isidiata Anzi Catal. 
Lich. Sondr. p. 28 (1860). 
Exsice. Bohl. n. 110; Johns. n. 221; Leight. n. 79 pro parte. 
Differs chiefly in the densely isidioid thallus, the lobes being often 
scarcely distinguishable. It is usually sterile. 
Hab. On rocks and boulders in upland regions.—Distr. Rather 
rare in S.W., W. and N. England, Wales, and §. Scotland and N.W. 
Treland, more frequent in the 8. and W. Highlands.—B. M. Withiel, 
Roscorea, and near Penzance, Cornwall; Dartmoor, Devon ; Maresfield, 
Sussex; Herefordshire Beacon, Malvern, Worcestershire; Bardon 
Hill, Leicestershire ; Coed Coch, Denbighshire; near Dolgelly and 
Jarmouth, Merioneth; Snowdon, Carnarvonshire; near Kendal, 
Westmoreland; New Galloway, Kirkcudbrightshire; King’s Park, 
Stirling ; Appin, Argyll; near Aberfeldy, Ben Lawers and Rannoch, 
Perthshire ; near Cortachy, Forfarshire ; Crathes, Aberdeenshire. 
Var. stenophylla Ach. Meth. Lich. p. 206 (1803),.—Thallus 
lobes narrower, more divided, crowded and imbricate. Apothecia 
smaller, rare-—Mudd Man. p. 102; form stenophylla Scheer. 
