314 LICHENACEI. [PHTSCrA. 



Physcia stelhiris var. aipolia f. antlielina Nyl. Lich. Scand. p. 111. 

 Lichen antheUnui Ach. Prodr, (1798) p. 111. 



The narrower and more discrete lacinite, which are eitlier entirely 

 smooth or somewhat rugose, distinguish this variety. In what Acharius 

 subsequently (Lich. Univ. p. 478) regarded as the more typical state, the 

 laciuiaj are c mtinuous from the centre to the circumference, when it is 

 entirely analogous to var. an (/list at a of P. pidverulenta. In the few British 

 specimens the apothecia are numerous. 



Hab. On the trunks and branches of trees in maritime and upland 

 districts. — Distr. Only sparingly in S. England and S.W. Ireland. — 

 B. M. : Heuheld, Sussex ; near liyde, Isle of Wight ; Ilsham Valley, 

 near Torquay, Devonshire. Muckruss Demesne, Killarney, co. Kerry. 



Yar. y. cercidia Xyl. cw Lamy, Bull. Soc. Bot. t. xxv. (1878) 

 p. 384. — Thallus whitish or greyish-white, somewhat rugose, be- 

 neath with blackish rhizin;^ ; laciniie contiguous, somewhat convex, 

 sliort, difform and crowded in the centre, plane aiid broader at the 

 circmnt'erence. Apothecia moderate or somewhat large, plane, the 

 thalline margin at length crenulate. — Cromb. Grevillea, xv, p. 78. — 

 Fannelia aipoJia j3. cercidia Ach. Lich. Univ. (1810) p. 478. Fhi/scia 

 sfellaris Cromb. Lich. Brit. p. 39 (excl. var. acritii) ; Leight. Lich. 

 Fl. p. 1.51, ed. 3, p. 14U. Borrera stellaris Mudd, Man. p. 109. 

 Parmelia stellaris Tayl. in Mack. El. Hib. ii. p. 142. Lichen stellaris 

 Lightf. Fl. Scot. ii. p. 824; With, Afr. iv. p, ;U pro parte: Eng. 

 Bot. t. 1697. — Brit. Exs.: Leight. n. 6; Mudd, n. 79 ; Larb. Lich. 

 Hb. no. 161. 



A larger and coarser plant u^ith somewhat of the aspect of P. pidveru- 

 lenta. It ditiers from the type in the col lur of the rhizinre and in the 

 more contiguous, convex, and rugose lacini«, which are at times as if 

 iuibricato-squamose in the centre. The apothecia are often very nume- 

 rous and crowded, sometimes nearly obliterating the thallus, when they 

 become tlexuose and deformed. 



Ildb. On the trunks of old trees, very rarely on calcareous walls, in 

 cultivated tracts from maritime to tipland districts. — Distr. General and 

 plentiful in most parts of Great Biitain ; apparently rare in S. Ireland 

 and in the Channel Islands. — B. M. : Island of Guernsey. Yarmouth, 

 Norfolk ; Walthamstow, Essex ; Edgeware, Middlesex ; near Elstree, 

 Herts; Keigate, Surrey ; Glynde, near Hastings, and Hentield, Sussex; 

 near Ryde, Isle of Wight ; Withiel and Penzance, Cornwall ; near Nails- 

 worth, Gloucestershire ; Madiugley Park, Cambridgeshire ; Twycross, 

 Leicestershire; Pixham, near Worcester, and North Malvern, AYorcester- 

 shire : Harboro' Magna, Warwickshire ; Llandriudod, Badnorshire ; Aber- 

 dovev, Merionethshire ; Clungnnford and near .Shrewsbury, Shropsliire ; 

 near Avton, Cleveland, Yorkshire ; Kendal and Windermere, AVestmore- 

 laud ; Alston, Cumberland : near Hexham, Northumberland. Troquain, 

 New Galloway, Kirkcudbrightshire ; near Melrose, Roxburgh ; near 

 Edinburgh ; Inverary Castle, Argyleshire ; Blair Drummond, near Stir- 

 ling ; Fiularig, Killin, Perthshire ; Camperdown, Forfarshire ; Cults, 

 near Aberdeen, and Castleton of Braemar, Aberdeenshire ; Fort William, 

 Inverness-shire ; Applecross, Ross-shire. Near Cork ; Dunkerron, co. 

 Kerry. 



