234 GRAnilDEI [OPKGIIAPHA 



Forest, Hunts ; Cirencester, Gloucestershire ; near Lewes, near 

 Steyning, Stannier Park, Glynde, ] deeding, Ardingly and Wakehurst, 

 Sussex ; Ulting, Hocklfiy and Hadlcigli Woods, and Epping Forest, 

 Essex ; Cader Idris, Merionctli ; Babraliani and Madingley Park, 

 Canibridgesliire ; Easby, Kildare, Ayton, and Cliffrigg, Cleveland, 

 Yorkshire; ]iarcaldinc, Argyll; Riverstown, Cork; Old Dromore, 

 Killarney, Kerry ; Glenarni, Antrim. 



6. 0. prosiliens Stirton in Grevillea iii. p. 3G (1874). — 

 Thallus white or whitish, thin. Apothecia black, prominent, 

 ovate or oblong ; disc narrow ; margins rounded and prominent ; 

 spores fusiform-ellipsoid, colourless, 3-septate, with a colourless 

 epispore, 0,020-28 mm. long, 0,006-7 mm. thick ; spermogones 

 with rod-like spermatia 0,004-6 mm. long. — Leight. Lich. Fl. 

 ed. 3, p. 403. Specimen not seen. 



Evidently very close to 0. betuUna, but with longer spores. 



Hah. On dead decorticated trees ; near Grantown, Invernessshire. 



7. 0. saxicola Ach. Syn. p. 71 (1814). — Thallus effuse, 

 greyish or greenish, or rusty-brown, thin, scurfy. Apothecia 

 scattered, oblong or ovate, long or short, variously branched or 

 difFormed and angular ; disc slit-like more or less expanded ; 

 margins tumid, rounded, incurved ; asci slightly thickened at 

 the apex, broadly clavate ; spores elliptical or elongate-clavate, 

 colourless, becoming brownish, 3-septate, 0,016-18 mm. long or 

 somewhat longer, 0,006 mm. thick ; spermogones with rod-like 

 spermatia 0,004 mm. long ; hymenial gelatine wine-red with 

 iodine. — Cromb. Lich. Brit. p. 98 ; Leight. Lich. Fl. p. 378 pro 

 parte; ed. 3, p. 401 pro parte. 0. rvjpestris Pers. in Ust. Ann. 

 Bot. xi. p. 20 (1794)?; Leight. in Ann. Mag. Nat. Hist. ser. 2, 

 xiii. p. 91 (1854) ; Mudd Man. p. 228 pro parte. 



Exsicc. Leight. n. 243. 



Hah. On rocks. — Distr. Somewhat rare in the Channel Islands, 

 N. England, Wales, and S.W. Ireland. — B. M. Rozel and Boulay Bay, 

 Jersey ; Newton, Cleveland, Yorkshire ; Nantgwynant, Snowdon, 

 Trefriw and Llandudno, Carnarvonshire ; Croghan, Killarney, Kerry. 



Var. Decaildollei Stiz. in Nov. Act. Acad. Leop. Carol, xxxii. 

 4, p. 26, t. 2, fig. 2 q-z (1865). — Thallus somewhat thicker than 

 in the species, seldom absent, yellowish-green or greyish. 

 Apothecia prominent, massed in small groups, and growing 

 singly, linear-oblong or ovate, usually simple, obtuse at the 

 extremities ; spores elongate, rounded at the ends, 0,021-24 mm. 

 long, 0,005 mm. thick. — Cromb. Lich. Brit. p. 98 ; Leight. Lich. 

 Fl. p. 379; ed. 3, p. 401. 0. saxaillis DC. Fl. Fr. ii. p. 312 

 (1805) (non Leight.). 0. saxigena Tayl. in Mackay Fl. Hib. ii. 

 p. 259 (1836) ; Leight. in Ann. Mag. Nat. Hist. ser. 2, xiii. p. 93 

 (1854). 0. rupesiris var. saxigena Mudd Man. p. 229 (1861). 



Exsicc. Leight. n. 311. 



Hah. On rocks, chiefly calcareous. — Disir. Not common in the 

 Channel Islands, N. England, Wales, Scotland and S. and W. Ireland. 



