USNEA.] USNEEI. 203 



(/. c.) to be common. B. M. : Island of Guernsey. Near Lydd, Kent ; 

 New Forest, Hants ; Lydford and near Totnes, Devonshire ; Bocconoc 

 and near Penzance, Cornwall ; Hay Coppice and Whitfield, Herefordshire; 

 near Porthogo, Breconshire ; Dynevor Castle, Carmarthenshire ; Hafod, 

 Cardiganshire; Island of Anglesea ; Gibside Woods, Durhirn ; Ambleside, 

 Westmoreland. New Galloway, Kirkcudbrightshire; Pentland Hills, 

 near Edinburgh ; near Inverary, Argyleshire ; Stronaclachan Woods, 

 Killin, Perthshire ; Uurris Woods, Kincardineshire ; Countesswells Woods, 

 near Aberdeen, and Ballochbuie Forest, Braemar ; Lochaber, Inverness- 

 shire. 



2. U. hirta Hoffm. Deutsch. Fl. ii. (1795) p. 133. Thallus some- 

 what small, nearly erect, caespitose, crowdedly branched, densely 

 and minutely fibrillose, greenish- or yellowish- white; branches often 

 covered with verrucoso-pulverulent soredia. Apothecia small, pale, 

 the margin with short radiating fibrils ; spores shortly ellipsoid, 

 0,006-8 mm. long, 0,004-6 mm. thick. Cromb. Linn. Soc. Journ. 

 Hot. xvii. p. 555. Usnea barbata fi. hirta Mudd, Man. p. 69 ; 

 Cromb. Lich. Brit. p. 23 ; Leight. Lich. PI. p. 84, ed. 3, p. 76. 

 Usnea piiciita y. hirta Gray, Nat. Arr. i. p. 404 ; Hook. Fl. Scot. 

 ii. p. 70 ; Sm. Eng. Fl. v. p." 226 ; Tayl. in Mack. FL Hib. ii. p. 86. 

 Lichen liirtus Linn. Sp. PL (1753) p. 1155 ; Huds. Fl. Angl. p. 462 ; 

 Lightf. Fl. Scot. ii. p. 895 ; With. Arr. ed. 3, iv. p. 46. Usnea vul- 

 yatisvima tenuior et brevior, sine orbiculis Dill. Muse. 67, t. 13. f. 12. 

 Brit. Exs. : Leight. n. 1 pro parte ; Mudd, n. 35. 



Distinguished from the preceding, which it resembles in habit, by 

 being much smaller (usually about 1-2 inches in height), more crespitose, 

 branched and fibrillose. Occasionally it is very small and pulvinate, and 

 is sometimes only sparingly sorediiferous. The apothecia are very rare 

 iu Great Britain, and are found only on the smaller conditions. Minute 

 cephalodia, however, are not unfrequent on the main branches. 



Hab. On old pales (oak and larch), and occasionally on the branches of 

 trees in wooded tracts, Distr. General in maritime and upland districts, 

 sometimes abundant, especially in the Central Highlands of Scotland ; 

 apparently rare in Ireland and in the Channel Islands. B. M. i Island of 

 Guernsey. Walthamstow, Essex; Lydd, Kent; near Lewes, Sussex; 

 near Ryde, Isle of Wight ; Lyndhurst, New Forest, Hampshire ; Coryton, 

 S. Devon ; near Penzance, Cornwall ; Cirencester, Gloucestershire ; *Gop- 

 sall, Leicestershire ; Rowter Rocks, Derbyshire ; near Oswestiy and 

 Haughniond Hill, Shropshire ; Conway Falls, Carnarvonshire ; Bettws- 

 y-Coed, Denbighshire ; Island of Anglesea ; lugleby, Cleveland, York- 

 shire ; near Hexham, Northumberland ; Ashgill, Cumberland. New 

 Galloway, Kirkcudbrightshire; near Moffat, Dumfriesshire; Pentland 

 Hills, near Edinburgh ; Inverary and Appin, Argyleshire; Killin, Perth- 

 shire; Much ills, Kincardineshire; Park, near Aberdeen; Mar Forest, 

 Braemar, Aberdeenshire ; Rothieniurchus Wood, Inverness-shire ; Lairg, 

 Sutherlandshire. Near Belfast, co. Antrim. 



3. TJ. dasypoga Nyl. ex Stiz. St. Gall. Nat, Ges. (1876) p. 202. 

 Thallus elongate, pendulous, scabrous, sparingly branched, greyish- 

 white or pale-greyish ; the branches long, divergent, simplish, with 

 short, patent, crowded fibrilla). Aiothccia small or nearly mode- 



