ALECXORIA.] ALECTOUIEI. 2i3 



The simpler, less intricate tballus, which is usually more compressed at 

 the axils, inoro shortly and remuttjly branched, thicker, tlexuose and less 

 sorediate than in .1. _/«i«/M, entitles this t(i be viewed as a subspecies. 

 The apothecia have never betm detected, and the spermogones are absent 

 in our specimens. 



Hah. x\.mon<; nidsses on rocks and boulders in upland and mountainous 

 districts. — Dktr. General and not uncommon in JOngland and N. Wales ; 

 plentiful auiong the (irampians, Scotland; not seen from Ireland. — 

 Ji. .M. : Thetford Warren, Norfolk ; Eridge Rocks, near Tunbridge Wells, 

 Susse.v ; Templemore and Dartmoor, Devonshire ; near Malvern and 

 Herefordshire Beacon, Worcestershire ; Cader Idris, Merionethshire ; 

 Snowdou, Carnarvonshire; Island of Anglesea ; Battersby, Cleveland, 

 Yorkshire; Gateshead Fell, Durham; Suddale, Westmoreland. Ben 

 Cruachan, Argyleshire; Ben More and Ben Lawers, Perthshire ; Clova 

 Mts., Forfarshire ; Craig Coinnoch, (xlen Cluny, J.orhnagar, and Ben- 

 naboord, Braemar, Aberdeenshire ; Ben Nevis and Loch Eiinich, luver- 

 ne^s-shire. 



Subsp, 2. A. snljcana Nyl. e.t'Cromb. Journ. Bot. 1876, p. 360. — 

 Thallus pendulous, tiliform, subelongate, much branched, greyish- 

 white (K~, CaCl~); soredia small, somewhat prominent, whitish. 

 Apothecia not seen. 



Very similar in colour to A. impJexa f. cana, for which but for the 

 absence of any reaction it might readily be mistaken. The thallus is less 

 elongate, more slender, with the brandies less entangled than in A.jubat.a, 

 while the soredia also are different. It has not been found fertile. 



Hah. On the branches of old firs in wooded mountainous tracts. — Disfr. 

 Very local among the Grampians, Scotland.— B. M. : Ben Lawers, Perth- 

 shire ; Glen Derrie, Braemar, Aberdeenshire. 



6. A. implexa Nyl. ex Xorrl. Med. Soc. pro F. et Fl. Fenn. i. 

 (1876) p. 14. — Thallus pendulous, elongate, filiform, subrounded, 

 very much branched and entangled, slender and flaccid, greyish- 

 yellow or greyish -white, with whitish or greyish scattered soredia 

 ^^4- yellowish^ CaCl~). Apothecia as in the preceding species.— 



Usnea imphxa Hoffra. Deutsch. Fl. ii. (1795) p. 134. Alectoria 

 cana Leigh t. Lieh. Fl. p. 88. Alectoria capillaris Cromb. Journ. 

 Bot. 1372, p. 233; Leight. Lich. Fl. ed. 3, p. 79.— This is the 

 Lichen juhatas pro parte of Linnaeus and of some of the older British 

 authors. 



Similar in habit to A.juhata, of which it has usually been considered 

 a varietv, but from which it is separated by the more slender and differ- 

 entlv-coloured thallus, and especially by the reaction. It has a still closer 

 resemblance to A. snnnentosn f. crinalis Ach., with which, in countries 

 Avhere both are frequent, it is apt to be confounded. It is often almost 

 entirely esorediate. It is very rarely fertile, and the few British speci- 

 mens are .sterile. 



Hah. On the trunks of old firs in mountainous districts. — Distr. Very 

 local and rare in N. England and the Grampians, Scotland. — B. M. : York- 

 shire. Kilbn, Perthshire ; Deerhill "Wood, Forfarshire ; Mar Forest, 

 Braemar, Aberdeenshire ; Rothienuirchus "Woods, luveruess-shire. 



