SOLORIJfA.] PELT1GEEEI. 281 



white, spongioso-tomentose, affixed by long scattered rhizinae; lobes 

 rounded, incised, or slightly crenate at the margins. Apothecia 

 urceolato-depressed, moderate, brown or blackish-brown, immar- 

 ginate ; spores 4na3, ellipsoid or oblong, reddish-brown, 0,032-50 mm. 

 long, 0,018-27 mm. thick.- Gray, Nat. Arr. i. p. 429 ; Hook. El. 

 Scot. ii. p. 36 : Sm. Eng. Fl. v. p. 214; Tayl. in Mack. Fl. Hib. ii. 

 p. 153 ; Mudd, Man. p. 85, t. i. f. 24 : Cromb. Enum. p. 29 ; Leight. 

 Lich. Fl. p. 112, ed. 3, p. 106. Lichen saccatus Linn. Fl. Suec. (1755) 

 p. 1102; Lightf. Fl. Scot. ii. p. 855; Huds. Fl. Angl. ii. p. 548; 

 Eng. Bot. t. 288 ; With. Arr. ed. 3, iv. p. 67. Lichenoides lichenis 

 facie, peltis acetabulis immersis Dill. Muse. 221, t. 30. f. 121. Brit. 

 Eva. : Mudd, n. 63 ; Leight. n. Ill ; Cromb. n. 47 ; Bohl. n. 4. 



The thallus, which is bright green when moist, becoming in old herbaria 

 'specimens reddish-brown, varies somewhat in texture according to habitat, 

 and is sometimes more or less white-pruinose (form pruinosa Fr. Lich. 

 Eur. p. 49). The saccate-impressed apothecia, which in old plants are 

 occasionally somewhat large, render this species easily recognized, though 

 without examination of the spores it might be confounded with S. bispora. 



Hub. On the ground and decayed moases, in crevices of rocks, rarely on 

 the mortar of old walls, in moist shady places, in upland and subalpine 

 districts. Distr. General, but not common, chiefly in W. and N. Eng- 

 land, N. Wales, and on the Grampians, Scotland; scarce in S.W. and N. 

 Ireland. B. M. : Cheddar Cliffs, Somersetshire ; near Buxton, Derby- 

 shire; Apes Tor. Staffordshire; Whitecliffe Hocks, near Ludlow, Shrop- 

 shire ; \Vhernside and Bolton Woods, Yorkshire ; Cwm Bychan, 

 Merionethshire ; Garn, Denbighshire ; Island of Anglesea ; Teesdale, 

 Durham ; Kentmere, Westmoreland ; Alston, Cumberland. Head of 

 Loch Awe and Island of Lismore, Argvleshire ; Killin, Ben Lawers, 

 Craig Tulloch, Perthshire; Canlochan Glen, Forfarshire; Craig Cluny, 

 Carr Rocks, and Morrone, Braemar, Aberdeenshire. Bandon Hill, co. 

 Kerry ; Ben Bulben, co. Sligo ; near Belfast, co. Antrim. 



3. S. spongiosa Nyl. ex Carroll, Journ. Bot, 1865, p. 288. 

 Thallus suborbicular, squamulose, dark-green when moist, greyish- 

 brown when dry ; squamules small, suberect, minutely inciso-lobed 

 and crenate, at length becoming granulato-crustose. Apothecia 

 deeply urceolate, becoming nearly plane, dark chestnut-coloured or 

 almost blackish, bordered externally by a thinnish, granulate, 

 thalloid margin ; spores 4nae, ellipsoid, brownish, 0,030-0,050 mm. 

 long, 0,018-0,023 mm. thick. Cromb. Lich. Brit. p. 30. Collema 

 sponyiosum Sm. Eng. Fl. v. p. 214. Pofychidium spongiosum Gray, 

 Nat. Arr. i. p. 402. Lichen spongiosus Sm. Eng. Bot. 1805, t. 1374. 

 Solorina limbata (Somm.), Mudd, Man. p. 85; Leight. Lich. Fl. 

 p. 1 13, ed. 3, p. 107. 



A singular-looking plant, sometimes regarded as a variety of S.saccata, 

 with which perhaps it is connected by intermediate states, traces of the 

 normal thallus being occasionally seen around the apothecia. It differs, 

 however, from it in the squamulose thallus, and more slightly in the mar- 

 gined apothecia and the thinner spores. The large and sometimes numerous 

 apothecia become nearly plane when old. 



Hab. On the ground among rocks, and on turf walls, in upland districts- 

 Dislr. Rather local and scarce, chiefly in N. England, among the 



