PELTIGERA. | PELTIGEREI, 291 
irregularly crenulate; spores attenuato-fusiform, thinly 3—7-septate, 
0,060-81 mm. long, 0,004-5 mm. thick.—Mnudd, Man. p. 83; 
Cromb, Lich. Brit. p. 29; Leight. Lich. Fl. p. 109, ed. 3, p. 103.— 
Peltidea polydactyla Gray, Nat. Arr. i. p. 428; Hook. Fl. Scot. ii. 
p. 61; Sm. Eng. Fl. v. p. 220; Tayl. in Fl. Hib. ii. p. 154. Lichen 
polydactylon Neck. Meth. Muse. (1771) p. 85; With. Arr. ed. 3, 
lv. p.69. Lichen caninus y. polydactylon Lightf. Fl. Scot. ii. p. 846; 
Huds. Fl. Angl. ed. 2, p. 547. Lichenoides cinereum polydactylon 
Dill. Muse. 207, t. 28. f£. 107.—To a state of this belongs also the 
following :—Peltidea pellucida Ach., Gray, Nat. Arr. i. p. 429. 
Lichen caninus §. Huds. Fl. Angl. ed. 2, p. 547. Lichenoides mem- 
branaceum pellucidum, peltis digitatis geminatis Dill. Muse. 208, 
t. 28. f. 108.— Brit. Hvs.: Cromb. n. 148; Bohl. nos. 56, 71. 
This approaches P. rufescens, but is distinguished by the numerously 
lobed thallus with its glabrous and shining upper surface, and by the 
form of the smaller apothecia. These are usually abundant, adnate or 
elongate and attenuate lobes, and at length become revolute. Sometimes 
they occur two together (geminate) on each fertile lobe, in which state 
it is represented in Dill. dc. (Peltidea pellucida Ach.), On the margins 
of the lobes pycnides occasionally occur, with stylospores oblong, oblongo- 
fusiform or almost ovoid, 0,007-0,012 mm. long, 0,003-4 mm. thick. 
Hab. Among mosses and short grass in shady situations in maritime 
and upland districts —Distr. General and usually plentiful in most parts 
of Great Britain; rare in Ireland and the Channel Islands.—B. M.: 
Island of Guernsey. Epping Forest, Essex; High Rocks, Tunbridge 
Wells, Kent; Dartmoor and near Totnes, Devonshire; near Penzance 
and Withiel, Cornwall; Milton, Oxfordshire; Gogmagog Hills, Cam- 
bridgeshire ; near Worcester and Malvern, Worcestershire; near Oswestry, 
Shropshire ; Aberdovey and near Dolgelly, Merionethshire; Island of 
Anglesea; Eglestone, Durham; Lamplugh, Cumberland. New Gallo- 
way, Kirkcudbrightshire; Auchindenny Woods, near Edinburgh ; Bar- 
caldine, Argyleshire; Glen Lochay and Glen Fender, Perthshire; Cor- 
riemulzie, a evenaae, Aberdeenshire; Lochaber, Inverness-shire; near 
Forres, Elgin; Applecross, Ross-shire. Cromaglown, Killarney, co. 
Kerry; Kylemore, co. Galway. 
Form 1. collina Nyl. Lich. Scand. (1861) p. 90.—Thallus smaller, 
the lobes narrower, crisp at the margins. Apothecia as in the type. 
—Cromb. Journ. Bot. 1876, p. 860; Leight. Lich. Fl. ed. 3, p. 104. 
—Lichen collinus Ach. Prodr. (1798) p. 162. 
Easily recognized by the lobes. The thallus is rather fragile when 
dry, and the apothecia are not numerous. 
Hab. On decayed mosses on the ground and old walls in upland tracts. 
— Distr, Local and rare on the S. and N. Grampians, Scotland, and in W. 
Ireland; no doubt to be detected elsewhere.—-B. M.: Glen Lochay, 
Perthshire ; Glen Cluny, Braemar, Aberdeenshire. Killarney, co. Kerry. 
Form 2. microcarpa Nyl. Syn. i. (1860) p. 327.—Thallus small, 
the fertile lobules short, narrow, subbifid. Apothecia minute.— 
Cromb. Grevillea, xv. p. 77.—Peltidea polydactyla y. microcarpa 
Ach. Lich. Univ. (1810) p. 520. 
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