290 LICHKNACEI. [PELTIGERA. 



septate, 0,056-75 mm. long, 0,0035-45 mm. thick. Leight. Lich. 

 PI. ed. 3, p. 103 ; Cromb. Linn. Soc. Journ. Bot. xvii. p. 574. 

 Peltigera rufescens subsp. spuria Cromb. Lich. Brit. p. 29. Peltidea 

 spuria Sra. Eng. Fl. v. p. 215. Lichen spurius Ach. Prodr. (1798) 

 p. 159 ; Eng. Bot. t. 1542. Peltigera canina e. pusilla Koerb., 

 Mudd, Man. p. 83. Lichenoides dir/itatum cinereum, Latucce foliis 

 sinuosis Dill. Muse. 200, t. 27. f. 102 A-D. 



Differs from the preceding in the small digitately lobed thallus, the 

 paler nerves, the smaller apothecia, and the longer spores. It so resembles 

 P. potydactyla that it might readily be confounded with some of the 

 states of that species. The thallus, which is sometimes pruinose, often 

 grows in a scattered manner ; the apothecia are numerous, nearly all the 

 lobes being fertile. 



Sab. On the ground among mosses and short grass, as also on the 

 stumps of felled trees in maritime and upland districts. Distr. Some- 

 what local in S., W., and N. England, N. Wales, on the Grampians, 

 Scotland ; not yet observed in Ireland. B. M. : Sotterley, Suffolk ; 

 Epping Forest, Essex ; Ightham, Kent ; near Hyde and Shanklin, Isle of 

 Wight; the Sussex Downs and Hurstpierpoint, Sussex; Totnes, S. 

 Devon ; near Cirencester, Gloucestershire ; Gogmagog Hills, Cambridge- 

 shire ; near Bicester, Oxfordshire ; Charnwood Forest, Leicestershire ; 

 Ossvestry and Church Stretton, Shropshire ; Ayton Moor, Cleveland, 

 Yorkshire ; Ynysfaig, N. Wales. Appin, Argyllshire ; The Trossachs 

 and Falls of Tummel, Perthshire ; Durris, Kincardineshire ; Corriemulzie, 

 Braemar, Aberdeenshire. 



5. P. scabrosa Fr. fil. N. Act. Reg. Soc. Sc. TJpsal. ser. 3, t. iii. 

 (1861) p. 145. Tballus moderate, subcoriaceous, very finely and 

 minutely scabrid, roundly lobed, opaque, pale-lurid or greyish-pale, 

 beneath whitish, subreticulate, with pale, nearly confluent nerves, 

 blackish in the centre. Apothecia moderate, subrotundate, at 

 length revolute, brownish-red or dark-chestnut, the margin sub- 

 crenulate; spores 0,068-80 mm. long (or even longer), 0,004- 

 0,005 mm. thick. Cromb. Journ. Bot. 1885, p. 195. 



A distinct species allied to P. rufescens, but differs in the minutely 

 scabrous not tomentellose thallus, and in the more elongate spores. 

 From P. scutata it is distinguished not only by the larger thallus and 

 apothecia and the form of the lobes, but also by the almost verrucose 

 epithallus, and the more septately divided spores. It is a plant of a 

 boreal type, and is fertile only in subarctic regions. 



Hab. On turf-covered walls in a mountainous region. Distr. Extremely 

 local and scarce on the N. Grampians, Scotland. B. M. : Between Cor- 

 riemulzie and Inverey, Braemar, Aberdeenshire. 



6. P. polydactyla Hoffm. Deutsch. Fl. ii. (1795) p. 106. 

 Thallus thinnish, digitato-lobed, ascending or suberect, glabrous 

 and shining, smooth or obsoletely impresso-unequal. glaucous-green 

 when moist, livid- or pale-glaucous or pale-brown when dry, beneath 

 nearly glabrous, whitish or white, reticulate with coarse blackish- 

 brown nerves, which are pale-reddish towards the circumference. 

 Apothecia small, longitudinal, brown or reddish-brown, the margin 



