PELXIGERA.] PELTIGEEEI. 289 



(Ach.) Gray, Nat. Arr. i. p. 428. Lichenoides digitatum rufescens, 

 foliis latucce crispis Dill. Muse. 203, t. 27. f. 103. Lichenoides pel- 

 tatum terrestre rufescens Dill, in Hay Syn. ed. 3, p. 76, n. 88. 

 .Br& EJCS. : Cromb. n. 43 ; Bohl. n. 87. 



The smaller, smoother, more crisp thaUus, and the difference of 

 colour, as also the darker or brownish veins of the underside, distinguish 

 this from P. canina, to which it is intimately allied. Whether it is to 

 be regarded as specifically distinct is doubtful, since intermediate states 

 occur by which they may be connected. The apothecia when present 

 are numerous, though it is often sterile. 



Hab. Among mosses on shady rocks and the stumps of felled trees in 

 maritime and mountainous districts. Distr. Ilather local and uncommon 

 in the Channel Islands, W. and N. England, N. Wales, the S.W. High- 

 lands of Scotland, and S. Ireland. B. M. : Island of Guernsey. Near 

 Totues, S. Devon; Penzance, Cornwall; Cirencester, Gloucestershire; 

 Hafod, Cardiganshire; Aberdovey, Merionethshire ; Windermere and near 

 Kendal, Westmoreland. New Galloway, Kirkcudbrightshire ; Barcaldiue, 

 Argyleshire; Kannoch, Perthshire; Corriemulzie, Braeinar, Aberdeen- 

 shire ; S. of Fort William, Inverness-shire. Rosscarbery, co. Cork. 



Form praetextata Florke in Somm. Lapp. Suppl. (1826) p. 123. 

 Thallus with the lobes isidiiferous or minutely squamulose at the 

 margins ; otherwise as in the type. Cromb. Linn. Soc. Journ. Dot. 

 xvii. p. 574. Peltigera canina, var. y. limbata (non Del.) Mudd, 

 Man. p. 83. P. canina var. crispa Leight. Lich. Fl. ed. 3, p. 102. 

 P. canina form lepidopJiora (non Nvl.) Cromb. Grevillea, xv. p. 77. 

 Brit. Exs. : Mudd, n. 60 ; Leight." n. 262 ; Larb. Lich. Hb. n. 46 ; 

 Bohl. n. 30. 



Well marked by the isidioso-subgranulose excrescences by which the 

 margins of the lobes are bordered (often densely), and which may be 

 also scattered here and there upon their surface. It is not uncommon in 

 fructification, the apothecia sometimes becoming large. Pycnides similar 

 to those of P. canina are frequent on the marginal squamules. 



Hab. Among mosses on shady rocks and walls, rarely on the ground, 

 generally near water, in upland districts. Distr. Somewhat Iccal, but 

 common in Great Britain and Ireland ; rare in the Channel Islands ; 

 plentiful on the Grampians, Scotland. B. M. : Rozel, Island of Jersey. 

 Lustleigh and Widdecombe, S. Devon ; Bocconoc, Cornwall ; near Wor- 

 cester ; Barmouth and Dolgelly, Merionethshire ; Ea&by and Sowerdale, 

 Cleveland, Yorkshire ; Teesdale, Durham ; near Kendal, AVestmorelaud ; 

 Keswick, Cumberland. Appin, Argyleshire ; Glen Lochay, Killin, and 

 Glen Fender, Blair Athole, Perthshire ; Craig Cluny, Braemar, Aber- 

 deenshire ; S. of Fort William, Inverness-shire ; Island of Skye. Kil- 

 larney, co. Kerry ; Glendalough, Connemara, co. Galway. 



4. P. spuria Leight. Lich. Fl. (1871) p. 108. Thallus small, 

 subsimple, digitately lobed, ascending or suberect, adpresso-tomen- 

 tellose, smooth, greyish-green ; beneath whitish, with coarse con- 

 colorous nerves and a few short rhizinae. Apothecia small, sub- 

 rotundate, at length oblongo-revolute, brown or reddish -brown, the 

 margin crenulate or denticulate ; spores aciculari-fusiform, 3-7. 



