PELTIDEA, | PELTIGEREI. 279 
Highlands; not seen from Iveland—B. M.: Dartmoor, Devonshire; 
White Force, Teesdale, Durham; near Kendal, Westmoreland. New 
Galloway, Kirkcudbrightshire; Dalmahoy Hill, near Edinburgh; near’ 
cae Argyleshire; the Ochills, Rannoch, and the Trossachs, Perth- 
shire. 
2. P. venosa Ach. Meth. (1808) p. 282.—Thallus small, simple, 
ascending or suberect, ovate or nearly flabelliformi-lobate, somewhat 
shining, smooth, bright-green when moist, pale-greyish or greenish- 
brown when dry ; beneath bearing cephalodia, white, with prominent 
black or brownish-black nerves ramifying from the base. _Apothecia 
suborbicular, plane, horizontal, somewhat large, brownish-black, the 
margin crenulate, evanescent ; spores 6-8nx, fusiform, 3-septate, 
colourless or pale-brown, 0,080-0,045 mm. long, 0,007-8 mm. 
thick.—Gray, Nat. Arr. i. p. 427; Hook. Fl. Scot. ii. p. 59; Sm. 
Eng. Fl. v. p. 215; Cromb. Lich. Brit. p. 28.—Peltigera venosa Mudd, 
Man. p. 84, t. 1. f.23 ; Leight. Lich. Fl. p. 111, ed.3, p.101. Lichen 
venosus Linn. Fl. Suec. (1755) n. 1097; Lightf. Fl. Scot. ii. p. 844; 
Huds. Fl. Angl. ed. 2, p. 545; With. Arr. ed. 3, iv. p. 69; Eng. 
Bot. t. 887. Lichenoides parvum virescens, peltis nigricantibus 
planis Dill. Muse. 208, t. 28. f. 109.—Brit. Exs.: Cromb. n. 42; 
Dicks. Hort. Sic. n. 25. 
A small plant, easily recognized by the simple or slightly lobed flabelli- 
form thallus and the horizontal fructification. The hypogenous cepha- 
lodia, which from their position are very apt to be overlooked, are usually 
visible upon the brown tomentose nerves. They ‘are granular, carti- 
laginous, glaucous or glaucous-grey (at length becoming dark or blackish), 
small, superficial, subglobose or somewhat depressed, not unfrequently 
crowded, and contain gonimia of moderate size and moniliform, in the thin 
cellular texture ” (Nyl. Flora, ut supra). The apothecia, which are large 
in proportion to the size of the thallus, are horizontal, and more connected 
with the upper than the lower surface of the margin of the thallus, 
Hab. On turf walls and on the ground in fissures of rocks in upland and 
alpine situations.—Distr. Local and rare in W. England, N. Ireland, and 
the hilly tracts of 8. Scotland; more general in the Grampians, especially 
in Breadalbane.—B. M.: Whitecliffe Rocks, near Ludlow, Shropshire, 
Kirkmichael and near Moffat, Dumfriesshire; Habbie’s How, Pentland 
Hills, near Edinburgh; Menstrie Glen, near Stirling; Stronaclachan and 
Finlarig, Killin, Ben Lawers and Pass of Killiecrankie, Perthshire ; 
Reeky Linn and Clova, Forfarshire. Near Belfast, co. Antrim. 
50. SOLORINA Ach. Lich. Univ. (1810) p. 27; Nyl. Flora, 1884, 
p. 219.—Thallus fragile, the cortical layer not continuous on the 
under surface, which is sometimes obsoletely nervose and rhizinose. 
Apothecia innate, rotundate or oblong, scattered on the upper 
surface of the thallus; spores 6-Sne, 4ne, or 2ne, fusiformi- 
oblong or ellipsoid, bilocular, brownish or reddish-brown ; hymenial 
gelatine (and the thece) bluish with iodine. Spermogones un- 
known. 
The rhizinose thallus and innate fructification separate this from the 
preceding genus. The apothecia are at first covered with a thalline veil, 
