292 LICHENACEI. [PELTIGERA. 



The shorter fertile lobules and the minute and often numerous apothecia 

 are the distinguishing marts of this form, which is perhaps only a starved 

 condition. 



Hob. On the ground among short mosses in upland districts. Distr. 

 Probably not rare in the mountainous regions of Great Britain, though 

 as yet seen only in W. England and the Scottish Highlands. B. M.: 

 Oswestry, Shropshire. Appin, Argyleshire ; Killin, Perthshire ; Apple- 

 cross, Ross-shire. 



Var. j8. lophyra Kyi. Lich. Scand. (1861) p. 90. Thallus 

 brownish; lobes scarcely ascending, rounded, beneath subvenose, 

 brown or brownish-black. Apothecia small, rotundato-oblong or 

 sometimes transverse. Cromb. Lich. Brit. p. 29. Peltidea hori- 

 zontalis y. lophyra Ach. Lich. Univ. (1810) p. 516. 



Distinguished by the roundly-lohed thallus, scarcely veined beneath, 

 and the form of the apothecia. In the only British specimen seen these 

 are transverse, whence it was considered by Acharius as a variety of 

 P. horizontalis, from which, however, it otherwise entirely differs. 



Hab. On decayed mosses upon boulders in upland districts. Distr. 

 Very local and scarce on the S. Grampians, Scotland (though recorded 

 from England by Acharius). B. M. : Finlarig, Killin, Perthshire. 



Var. y. hymenina Nyl. Lich. Scaud. (1861) p. 90. Thallus with 

 paler subconfluent veins on the under surface. Apothecia rotun- 

 dato-oblong. Cromb. Journ. Bot. 1876, p. 300 ; Leight. Lich. Fl. 

 ed. 3, p. 104. Lichen polydactylos var. 2, With. Arr. ed. 3, iv. 

 p. 69. Peltidea hymenina Ach/Meth. (1803) p. 284. 



Differs in the character of the thallus beneath, and in the form of the 

 fructification. The thallus when dry is cervine-coloured, and the apo- 

 thecia are generally but sparingly present. 



Hub. Among mosses on the ground and about the roots of old trees in 

 upland wooded districts. Distr. Not general nor common in the hilly 

 and mountainous tracts of W. and N. Ireland, N. Wales, and the W. 

 Highlands of Scotland ; rare in N.W. Ireland. B. M. : Bocconoc, Corn- 

 wall ; Malvem, Worcestershire ; Harboro' Magna, Warwickshire ; Hope 

 Bowdler and High Rock, Bridgenorth, and near Caer Caradoc, Shrop- 

 shire; near Aberdovey, Merionethshire ; Llanberis, Carnarvonshire ; Kil- 

 dale Moor, Cleveland, Yorkshire ; Windermere, Westmoreland ; Alston, 

 Cumberland. Kenmure, near Glasgow; Inverary and Appin, Argyle- 

 shire ; Glen Lochay and Ben Lawers, Perthshire. Dawros River, Con- 

 neinara, co. Galway. 



7. P. scntata Leight. Lich. Fl. (1871) p. 110. Thallus small, 

 thinnish, sinuato-lobed, more or less minutely depresso-granulate, 

 undulato-crenate, crisp and caesio-sorediate at the margins, greyish- 

 green when moist, pale-greyish or greyish- red when dry ; beneath 

 whitish, with pale-brown nerves and moderate whitish rhizinse. 

 Apothecia small, suborbicular, ascending, brown or reddish-brown, 

 the margin crcnate and inflexed : spores elongato-fusiform, usually 

 3-septate, 0,044-60 mm. long, 6,004-5 mm. thick. Leight. Lich. 

 Fl. ed. 3, p. 104. Peltiyera polydactyla var. scutata Cromb. Lich. 



