294 LICHENACEI. [PELTIGEEA. 



Grampians, Scotland. — B. M. : Betchworth, Surrey ; Eridp-e Bocks and 

 near Ilenfield, Sussex; New Forest, Hants; Dartmoor, llsham AValk, 

 Torquay, and near Totnes, S. Devon ; Pentire, Cornwall ; Leigh Woods, 

 near Bristol, Gloucestershire ; Charnwood Forest, Leicestershire ; Mal- 

 Tern, Worcestershire ; Oswestry and Whitecliffe Rocks, Shropshire ; 

 Aberdovey and Banuouth, Merionethshire ; Bettws-y-Coed, Carnarvon- 

 shire ; Stogdale, Cleveland, Yorkshire ; Teesdale, Durham ; near Kendal, 

 Westmoreland ; Keswick, Cumberland ; The Cheviots, Northumberland. 

 New Galloway, Kirkcudbrightshire ; Swanston, near Edinburgh ; Bowl- 

 ing Bay, Dunbartonshire ; Dunoon and Barcaldine, Argyleshire ; Loch 

 Katrine, near Caliandei", Kenmore, Craighall, and Duukeld, Perthshire ; 

 Craig Cluuy, Braemar, Aberdeenshire; Lochaber, Inverness-shire; near 

 Forres, Elgin. Killarney, co. Kerry. 



Form muscormn Schl. e.v Schaer. Emim. (1850) p. 21. — Thallus 

 thinner, less roundly lobed, the lobes smaller, narrower. Apothecia 

 small. — Cromb. Journ. Bot. 1870, p. 300; Leigbt. Lich. Fl. ed. 3, 

 p. 105. 



Differs in being considerably smaller in all its parts. The apothecia 

 are also fewer, at least in our British specimens. 



Hab. Among mosses at the roots of old trees in upland districts. — 

 Distr. Local and scarce in S.W. and N. England, on the S. Grampians, 

 Scotland, and in N.W. Ireland. — B. M. : Paington, S. Devon ; near 

 Whitehaven, Cumberland. Glen Lochaj', Killiu, Perthshire. Kylemora 

 Lake, co. Galwa^". 



Tribe XVL PHYSCIEI Nyl. Bull. Soc. Linn. Norraand. ser. 2, 

 vii. (1872) p. 322 (cfr. Cromb. Grevillea, v. p. 77). 



Thallus foliaceous or sometimes fruticulose, usually stellato- 

 orbicular ; gonidial layer consisting of true gonidia. Apothecia 

 lecauorine ; spores Snce, subellipsoid or oblong, variously bilocular, 

 or 1-septate, rarely quadriloeular, brown or colourless ; paraphyses 

 discrete. Spermogones innate ; sterigmata usually pluri-articulate ; 

 sperniatia cylindrical or oblongo-cylindrical, occasionally obsoletcly 

 incrassate at either apex, very rarely acicid.ar. 



Consists of a single genus, formerly included under Ptivnfliei, but 

 recently separated by Nylander as a distinct tribe. From the less deve- 

 loped thallus and the type of the apothecia it occupies au interior place 

 in the Series. 



53. PHYSCIA Schreb., Linn. Gen. PI. ed. 8, t. ii. (1791) p. 708 ; 

 Njd. Syn. i. (1800) p. 400. — Thallus horizontally expanded, or some- 

 times ascending, variously lobed or laciniate ; beneath discolorous, 

 very rarel}' concolorous, more or less fibrilloso-rhizinose ; medullary 

 layer vroolly, composed of filaments loosely iuterwoveu, cortical 

 la3'er cellular, or with longitudinal cellular cavities. Apothecia 

 sessile or pedicellate, rarely concolorous with the thallus ; hypo- 

 thecium colourless, rarely brownish-black ; hymenial gelatine bluish 

 with iodine. Spermogones generally scattered, becoming at length 



