PELTIGERA | PELTIGERACEE 99 
in moist shaded upland localities.—Dzistr. Rather rare in W. and N. 
England and 8. Scotland; more plentiful in the Grampians; rare in 
Treland.—B. M. Stout’s Wood, Gloucestershire; Craigforda, Here- 
fordshire ; Llyn Bodlyn, Merioneth; Llanberris, Carnarvonshire ; 
Buxton, Derbyshire ; Walla Crag, Cumberland; Teesdale, Durham ; 
The Cheviots, Northumberland; Falls of Clyde, Lanarkshire; near 
Inverary and Barcaldine, Argyll; Ben Lawers, Craig Calliach, Glen 
Lochay, Killin, Blair Athole and Den of Reichip, Perthshire; Clova 
and Sidlaw Hills, Forfarshire ; Craig Cluny, Invercauld, Blair Athole 
and Craig Coinnoch, Braemar, Aberdeenshire; Glen Lochy and Loch 
Linnhe, Invernessshire; near Belfast, Antrim ; Connemara, Galway. 
Var. leucophlebia Nyl. Syn. Lich. p. 323 (1860).—Thallus 
usually smaller, more opaque and whitish beneath, with distinct 
whitish nerves. Apothecia rare (not seen in Britain) ; spores 
3-septate, 52-66 w long, 4-6 thick. Peltidea aphthosa var. 
leucophlebia Nyl. in Not. Sillsk. Faun. & Fl. Fenn. Forh. v. 
p. 117 (1866) ; Cromb. Monogr. i. p. 278. 
Eusice. Johns. n. 83 ; Mudd n. 58. 
Hab. Among mosses on shady rocks or on the ground in upland 
districts.— Distr. Rare in S.W. and N. England, in S. Scotland and 
in the Highlands, not seen from Ireland.—B. M. Dartmoor, Devon; 
White Force, and on moors, Teesdale, Durham; near Kendal, West- 
moreland ; New Galloway, Kirkcudbrightshire ; Dalmahoy Hill, near 
Edinburgh ; near Inverary, Invernessshire ; the Ochills, Blair Athole, 
Rannoch and The Trossachs, Perthshire. 
10. P. venosa Hoffm. Pl. Lich. i. p. 31, t. 6, fig. 2 (1790).— 
Thallus rather small, up to 2 cm. across, the fronds ascending, 
roundish, entire or somewhat lobate, smooth and shining, bright- 
green when moist, greyish or greyish-brown or fawn-coloured 
when dry, beneath white with dark-brown branching nerves 
radiating from the base. Cephalodia somewhat globose, glaucous- 
green, becoming dark-coloured, hypogenous, seated on the brown 
tomentose nerves. Apothecia roundish, moderate in size or 
rather larger, up to about 5 mm. in diameter, plane, adnate, 
dark-brown or blackish, the proper margin somewhat crenate, 
evanescent ; spores 6 to 8 in the ascus, fusiform, 3-septate, 
colourless or pale-brown, 30-45 p long, 7-8 pw thick.—Mudd 
Man. p. 84, t. 1, fig. 23; Leight. Lich. Fl. p. 111; ed. 3, p. 105. 
Lichenoides parvum virescens, peltis nigricantibus planis Dill. Hist. 
Muse. p. 208, t. 28, f. 109 (1741). Lichen venosus L. Sp. Pl. 
p. 1148 (1753); Lightf. Fl. Scot. ii. p. 844; Huds. Fl. Angl. 
ed. 2, p. 546; With. Arr. ed. 3, iv. p. 69; Engl. Bot. t. 887. 
Peltidea venosa Ach. Meth. Lich. p. 282 (1803) ; 8S. F. Gray Nat. 
Arr. i. p. 427 ; Hook. Fl. Scot. ii. p. 59 & in Sm. Engl. FI. v. 
p. 215; Cromb. Lich. Brit. p. 28 & Monogr. i. p. 279. 
Easice. Cromb. n. 42. 
Differs from the preceding species in the much smaller size of the 
thallus and in the hypogenous cephalodia. 
H 2 
