PELXIDEA.J PELTIGEEEI. 279 



Highlands ; not seen from Ireland. B. M. : Dartmoor, Devonshire ; 

 White Force, Teesdale, Durham ; near Kendal, Westmoreland. New 

 Galloway, Kirkcudbrightshire ; Dalmahoy Hill, near Edinburgh ; near 

 Inverary, Argyleshire ; the Ochills, Raunoch, and the Trossachs, Perth- 

 shire. 



2. P. venosa Ach. Meth. (1803) 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 6-8nae, fusiform, 3-septate, 

 colourless or pale-brown, 0,030-0,045 mm. long, 0,007-8 mm. 

 thick. Gray, Nat. Arr. i. p. 427 ; Hook. Fl. Scot. ii. p. 59 ; Sm. 

 Eng. Fl. v. p. 21 5 ; Cromb. Lich. Brit. p. 28.Peltigera venosa Mudd, 

 Man. p. 84, t. 1. f. 23 ; Leight. Lich. Fl. p. Ill, 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 parwum virescens, ptltis nigricantibus 

 _pZara*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 tonientose 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. 



Hub. On turf walls and on the ground in fissures of rocks in upland and 

 alpine situations. Distr. Local and rare in VV. England, N. Ireland, and 

 the hilly tracts of S. Scotland ; more general in the Grampians, especially 

 in Brea'dalbane. B. M. : Whiteclifte 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. SOLOKINA 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 6-8nae, 4nse, or 2nae, fusiformi- 

 oblong or ellipsoid, bilocular, brownish or reddish-brown ; hy menial 

 gelatine (and the thecse) 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, 



