SOLORINA] PELTIGERACEE 105 
Kentmere, Westmoreland ; Alston, Cumberland ; Teesdale, Durham ; 
Loch Awe and Island of Lismore, Argyll; Killin, Finlarig, Ben 
Lawers, Craig Tulloch and Blair Athole, Perthshire; Canlochan 
Glen, Forfarshire ; Craig Cluny, Carr Rocks and Morrone, Braemar, 
Aberdeenshire ; Bandon Hill, Kerry; Ben Bulben, Sligo; Colin Glen 
near Belfast, Antrim. 
3. §. spongiosa Carroll in Journ. Bot. iii. p. 288 (1865),— 
Thallus fragile, suborbicular, of small suberect squamules, minutely 
crenate, becoming partly granular-crustaceous, dark-green when 
moist, brown when dry. Apothecia round, sunk in the thallus 
or becoming plane, dark-reddish-brown, surrounded by squamules 
or shreds of the thallus ; spores 4 in the ascus, ellipsoid, brownish, 
30-50 p long, 18-23 » thick.—Cromb. Lich. Brit. p. 30. S. lim- 
bata Mudd Man. p. 85 (1861); Leight. Lich. Fl. p. 113; ed. 3, 
p- 107. Lichen spongiosus Sm. Engl. Bot. t. 1374 (1804). 
Collema spongiosum Ach. Lich. Univ. p. 661 (1810) ; Hook. in 
Sm. Engl. Bot. v. p. 214; Tayl. in Mackay Fl. Hib. ii. p. 111. 
Polychidium spongiosum 8. F. Gray Nat. Arr. i. p. 402 (1821). 
Lecanora limbata Sommerf. Suppl. Fl. Lapp. p. 105, t. 3 (1826). 
Exsice. Johns. n. 307. 
Differs from the preceding in the much less developed thallus, and 
in the less deeply urceolate apothecia. The cephalodia of this species 
are in the form of minute green squamules, often attached to the 
apothecium. 
Hab. On the ground among rocks and on turf walls in upland 
districts.—Distr. Rare in N. England and N.E. Ireland, more 
plentiful among the Grampians.—B. M. Buxton Dale, Derbyshire ; 
Whernside and Guisboro’ Moor, Cleveland, Yorkshire; Teesdale, 
Durham; near Kendal, Westmoreland; Finlarig, Killin, near 
Tummel Bridge and Craig Tulloch, Perthshire; Glenariff, Antrim. 
4. §. bispora Nyl. Syn. i. p. 331, t. 8, fig. 42 (1860).—Thallus 
orbicular, small, thickish, fragile, wrinkled, lobate, somewhat 
crenate, pale-greyish or brownish-green, white-pruinose, whitish 
beneath. Apothecia round, sunk in the thallus, small or moderate 
in size, brown or dark-brown, bordered generally by the broken 
thallus ; spores 2 in the ascus, ellipsoid, reddish-brown, 65-88 
long, 33-42» thick.—Stirton in Grevillea ii. p. 60 (1873) ; 
Leight. Lich. Fl. ed. 3, p. 107. 
Differs from the preceding in the white-pruinose thallus, the 
2-spored ascus, and in the larger spores. Groups of Nostoc form 
cephalodia on the under surface of the thallus. 
Hab. On the ground in alpine districts.—B. M. Ben Lawers. 
