PIlYSCIA.j PHISCIKI. 303 



cniiie, inflexed, denticulate, or proliferou-*. In this last condition it ia 

 digitately fimhiiato with lai-iniolpe, whence var. acti/iota (Ach. .Meth. 

 p. :ioO). The sperniofrouus, which are usually very numerous, are large, 

 prominent, s -attered or aiJ'xrei^ate, from pale-brown becoming blackish, 

 with sperniatia cylindrical, 0,004-5 mm. long, 0,001 mm. thick. In other- 

 wise sterile specimens they are sometimes much elevated, rendering the 

 thallus verrucoso-papillate, whence var. verrucosa (Ach. Lich. Univ. 

 p. 407). 



Ilab. On the trunks of old trees, chiefly oaks and elms, in cultivated 

 lowland, rarely upland districts. — Dittr. General, and ]>lentiful where it 

 occurs, in England, much scarcer in the Channel Islands and E. Scot- 

 land ; apparently very local and rare in X. Wales and E. Ireland. — 

 B. M. : Islands of Jersey, Sark, and Guernsey. Norwich, Xorinlk ; 

 Bury, Sutiblk ; near Colchester and Walthamstow, Essex; llythe, Kent; 

 Dorking, Surrey ; Glynde, Sussex; AN'inchester, Hants ; near Ityde, Isle 

 of Wight; Elburtou and Xewton Bushell, S. Devon; near Cirencester, 

 Gloucestershire ; near Farriugdou and Windsor, Berkshire ; near Swin- 

 don, Wiltshire ; Madingley, Cambridgeshire ; Twycross, Leicestershire ; 

 Overthrope, Xortliamjituushire ; Harboro' Magna, Warwickshire ; Moor 

 Park, Herefordshire : Malvern and Broadwas, Worcestershire; Clungun- 

 ford, Shropshire ; Ilopton, Cheshire ; Island of Auglesea ; near Ayton, 

 Cleveland, and Dalby, Yorkshu-e ; Middleton, Teesdale, Durham ; Kendal, 

 Westmoreland; near Hexham, Northumberland. Rossy In Woods, Mid- 

 lothian ; Fiularig, Killin, Perthshire : Foulis, Baldovan, Auldbar, and 

 Melgund Castle, Forfarshire ; 3Iidmar Castle, Aberdeenshire. Oakpark, 

 near Carlow, co. Cailow. 



Yar. ft. saxicola Xyl. Mem. See. Cherb. v. (1857) p. 106, Syn. i, 

 p. 414. — Thallus smaller, more apprcssed, greenish- or dark-cervine ; 

 laciniaj narrow, with sordid or brownish-black marginal cilia. 

 Apothecia naked. — Carroll, Journ. Bot. 1S86, p. 22 ; Cromb. Lich. 

 Brit. p. 3S : Leight. Lich. Fl. p. 146, ed. 3. p. 134. — Borrera cilia ris 

 var. ft. saxicola Mudd, Man. p. 105. 



The darker colour of the* more appressed thaUus and the narrower 

 laciniai distinguish this ^ ariety, which sometimes occurs where the tvpe 

 is unknown. In this country it is only sterile, in which condition it is 

 Parmelia ciliaris var. y. melanosticta Ach. Meth. p. 255. 



Hab. On rocks and walls (rarely on bare sandy soil) in maritime and 

 mountainous regions. — Distr. Local aud scarce in the Channel Islands, 

 S., W., and N. England, the N. Grampians, .Scotland, and in S.W. Ire- 

 land. — B. M.: Quenvais, Island of Jersey. AVithiel, Cirnwall ; Buxton, 

 Derbyshire; near Little Malvern, Worcestershire; Holyhead, Island of 

 Anglesea; near Langbraugh, Cleveland, Yorkshire. Craig Tulloch, 

 Blair Athole, Perthshke ; Mon-oue, Braemar, Aberdeenshii-e. Sybil 

 Head, co. Keny. 



8. P. leucomela Mich. Fl. Bor.-Amer. (1803) p. 356.— ThaUus 

 diffuse, subcaespitose, lineari-laciniate, whitish or glaucous-white ; 

 beneath white, subgranulose, subcanaliculate or plane ; laciniae 



narrow, lax, subascending, fibrilloso-ciliate at the margins (K]j^yellow, 



CaCl^Tyellow). Apothecia lateral, pedicellate, moderate, plane, Ccesio- 



pruinose, the margin radiating ; spores often subcpaadrUocular, 



