94 CYCLOCARPINE® [PELTIGERA 
p- 83 (1861) (non Del.); form crispa Leight. Lich. Fl. ed. 3, 
p. 102 (1879) (non Ach.) ; form lepidophora Cromb. in Grevillea 
xv. p. 77 (1887) (non Nyl.). Peltidea ulorrhiza var. pretextata 
Floerke ex Sommerf. Suppl. Fl. Lapp. p. 123 (1826). 
Euxsicc. Bohl. u. 30; Johns. n. 363; Larb. Lich. Hb. n. 46; 
Leight. n. 262 pro parte; Mudd n. 60. 
Well marked by the densely isidioid margins of the thallus. 
Hab. Among mosses on shady rocks, etc., generally in moist places. - 
—Distr. Throughout the British Isles, more frequent than the species. 
—B.M. Rozel, Jersey ; Bocconoc, Cornwall; Lustleigh and Widdi- 
combe, Devon; near Worcester; Barmouth and Dolgelly, Merioneth ; 
Easby, Sowerdale and Baysdale, Cleveland, Yorkshire; Teesdale, 
Durham; Windermere and near Kendal, Westmoreland; Keswick, 
Cumberland; Airds, Appin, Argyll; Glen Lochay, Killin and Glen 
Fender, Blair Athole, Perthshire ; Craig Cluny, Braemar, Aberdeen- 
shire; near Fort William, Invernessshire; I. of Skye; Killarney, 
Kerry; Glendalough, Connemara, Galway ; Clare Island, Mayo. 
Thallus pulverulent, granular or scabrid above. 
4. P. malacea Fr. Lich. Eur. p. 44 (1831).—Thallus moderate 
in size, thickish, smooth or obsoletely pulverulent, pale-greyish- 
brown when moist, bright-brown or greyish when dry, beneath 
tomentose, dark-brown at the centre, becoming lighter and 
almost colourless towards the margin, without nerves. Apothecia 
moderate in size, orbicular, adnate, brownish-red, crenulate at 
the margin ; spores elongate-fusiform, 3—5-septate, 58-74 p long, 
5-6 p thick.—Cromb. in Journ. Bot. lvii. p. 147 (1874) ; Leight. 
Lich. Fl. ed. 3, p. 102 pro parte. Peltidea malacea Ach. Syn. 
Lich. p. 240 (1814) pro parte; var. microloba Nyl. ex Lamy in 
Bull. Soc. Bot. xxv. p. 378 (1878) ; Cromb. Monogr. i. p. 287. 
Ezxsicc. Johns. n. 362. 
Distinguished by the almost continuous brown tomentum of the 
under surface. Apothecia are occasionally formed on the under side 
of the thallus, but in that case not at the extreme margin as in 
Nephromiwm (Bitter in Ber. Deutsch. Bot. Ges. xxii. p. 248 (1904) ). 
Hab. Among mosses on rocks and about the roots of trees in 
mountainous regions.—Distr. Rare in hilly or mountainous regions in 
W. England and Highlands of Scotland.—B. M. Gravesend, Kent ; 
Bridgnorth and Hope Bowdler, Shropshire; Inverary, Argyll; Glen 
Lochay and Dunkeld, Perthshire. 
5. P. scutata Koerb. Syst. Lich. Germ, p. 60 (1855).—Thallus 
divided into moderate-sized lobes, more or less minutely granular 
or furfuraceous, the lobes undulate, crenate, crisp and bluish-grey- 
sorediate (rarely naked) at the margins, greyish-green when 
moist, pale tawny-brown when dry, beneath with a pale brown 
tomentum, whitish interspaces and whitish rhizine, the nerves 
and rhizinsee both becoming darker. Apothecia rare, small, 
roundish, on short ascending lobes, the margin crenate and 
