248 LICHENACEI. [tARMELIA. 



of maceratiou. In the centre the laciniffi are convex and subnigotje. 

 The apothecia are uumen)us, chiefly central, heconiing somewhat large 

 and flexnose. The spermogones are abundant, black, irregularly scattered 

 over the surface of the thallus, with spermatia 0,005-6 mm. long, about 

 0,001 mm. thick. 



Hah. On old walls, rocks, and boulders in maritime and upland regions. 

 — Distr. General and common in Great Britain, especially in mountainous 

 tracts ; rarer in the Channel Islands ; apparently rare in Iivland. — 1^. M. : 

 Islands of Jersey and Sark. Dartmoor, Ivy Bridge, and Temple Moor, 

 Devonshire ; near Penzance and Ilelminton, Cornwall : Malvern IIUls, 

 Worcestershire ; Charnwood Forest, Leicestershire ; near Oswestry, 

 {Shropshire ; Llanbedr, Barmouth, Cader Idris, and Dolgelly, Merioneth- 

 shire ; Llandyssil, Cardiganshire ; Bangor, Carnarvonshire ; Beaumaris, 

 Island of Angloea ; Teesdale, Durham; near Kendal, Westmoreland; 

 Enuerdale, Cumberland. New Galloway, Kirkcudbrightshire : near Mof- 

 fat, Dumfriesshire ; Ayrshire ; Inverary, Criuan ('anal, and Appin, 

 .A rgyleshire ; Loch Ard, Ben Lawers, and Aberfeldy, Perthshire ; Durris, 

 Kincardineshire ; Craig Guie, Braemar, Aberdeenshire. Duukerron, co. 

 Kerry. 



Form isidiata Leight. Lich. F\. i. (1871) p. 135. — Thallus co- 

 vered with densely crowded isidia, except at the circumference : 

 otherwise as in the type. — Leight. Lich. Fl. ed. 3, p. 12o. — Imhri- 

 caria cons2')crsa f. isidiata Anzi Cat. Lich. Sondr. (1860) p. 28. 

 Lichenoides imhn'catum viridans, scnte^Hs badiis Dill. Muse. 180, 

 t. 24. f. 75 a.— Brit. Exs. : Leight. n. 75) pro parte ; Bohl. n. 110. 



Easily recognized by the densely isidioid thallus, in which the lacinise 

 are often scarcely visible. It is usually infertile, and when present the 

 apothecia are not numerous. 



Hah. On rocks and boulders in upland districts. — Distr. Eather local 

 in S.W., W., and N. England, in ^Vales and S. Scotland, more frequent 

 in the S. and W. Ilighlaiids : apparently rare in N.W. Ireland. — B. M. : 

 Dartmoor, DevL.nshire ; Withiel and near Penzance, Cornwall ; Here- 

 fordshire Beacon, Malvern, Worcestersliire : Pont-nedd-Yeclian, Breck- 

 nockshire; near Dolirelly, Merionethshire; Snowdon, Carnarvonshire; 

 near Kendal, Westmoi eland ; Ennerdale, Cumberland. New Galloway, 

 Kirkcudbiightshire : Appin, Argyleshire; King's Park, Stirling; Ben 

 Lawers and Kannoch, Pertlisliire ; near Cortachy, Forfarshire ; Crathes, 

 Aberdeenshire. 



Yar. /3. stenophylla AcL. Meth. (1803) p. 206.— Thallus some- 

 what effuse: hiciniie longer, narrower, more divided and imbricate. 

 Apothecia smaller, rare. — Mudd, Man. p. 102; Cromb. Lich. l-irit. 

 p. 34; Leight. Lich. Fl. p. 135, ed. 3, p. V2A.—Brit. Exs.: Leight. 

 n. 79 pro parte. 



A\'ell distiugui.'rhed by the form of the lacinise. It occasionally pre- 

 sents an almost paunifoim aspect, and is normally glabrous, though some- 

 times sparingly isidiiferous. The apothecia are very rare in British 

 specimens. 



Hah. On boulders and old walls in upland districts. — Distr. Local and 

 scarce in S., Central, ar.d W. England, in N. "Wales, in the S.W. High- 

 lands and S. Gran. plans. Scotland : rare in S.W. Ireland. — B. M. : Near 

 Penzance, Ccirnwall ; Bardcn Hill, Leicestershire ; near Oswestry, Shrop- 



