240 CYCLOCARPINE [| PHYSCIA 
Var. cercidia Th, Fr. Lich. Scand. i. p. 139 (1871).—Thallus 
greyish-white, the laciniz short, contiguous, somewhat convex or 
wrinkled, crowded and partly imbricate in the centre, broader ~ 
at the circumference. Apothecia mostly pruinose, sometimes 
larger.—Physcia_ stellaris Cromb. Lich. Brit. p. 39 (1870) pro 
parte; Leight. Lich. Fl. p. 151; ed. 3, p. 140. Ph. aipolia var. 
cercidia Nyl. ex Lamy in Bull. Soc. Bot. Fr. xxv. p. 384 (1878) ;° 
Cromb, in Grevillea xv, p. 78 (1887). Lichen stellaris Lightf. 
Fl. Scot. ii. p. 824 (1777) ; With. Arr. ed. 3, iv. p. 31 pro parte. 
Parmelia aipolia var. cercidia Ach. Lich, Univ. p. 478 (1810). 
P. stellaris Tay]. in Mackay Fl. Hib. ii. p. 142 (1839) (2 Ach.). 
Borrera stellaris Mudd Man. p. 109 (1861). 
Easice. Carroll Lich. Hib. n. 7; Johns. n. 251; Larb. Lich. 
Hb. n. 161 & Lich. Cantab. n. 13; Leight. n. 6; Mudd n. 79. 
A coarser plant than the species, resembling Ph. pulverulenta in 
the irregular difform wrinkled growth. The short rhizine are 
crowded, much branched and become darker in colour, The apothecia 
are often numerous and crowded. 
Hab. On old trees, rarely on calcareous walls, in cultivated districts. 
—Distr. General and plentiful in most parts of the British Isles.— 
B. M. Guernsey; Withiel and Penzance, Cornwall; near Ryde, I. of 
Wight; Glynde, Fairlight near Hastings, and Henfield, Sussex; 
Reigate, Surrey; Edgware, Middlesex; Elstree, Herts; Windsor. 
3erks; Ulting, Essex; near Nailsworth, Gloucestershire; Pixham 
and North Malvern, Worcestershire; Llandrindod, Radnorshire ; 
Llanymynech, Clungunford and near Shrewsbury, Shropshire ; Aber- 
dovey, Merioneth; Malew, I. of Man; Madingley Park, Cambridge- 
shire; Twycross. Leicestershire; near Ayton, Cleveland, Yorkshire ; 
near Hexham, Northumberland; Kendal and Windermere, Westmore- 
land; Alston, Cumberland; New Galloway, Kirkeudbrightshire; near 
Melrose, Roxburghshire ; near Edinburgh; near Inverary and Appin, 
Argyll; Blair Drummond, near Stirling; Finlarig, Killin, Perthshire ; 
Camperdown, Forfarshire ; Cults and Castletown of Braemar, Aber- 
deenshire; Fort William, Invernessshire; “Applecross, Rossshire ; 
near Cork ; Dunkerron, Kerry. 
9. Ph. melops Duf. ex Nyl. in Flora lvii. p. 16 (1874),— 
Thallus normally orbicular-stellate, appressed, more or less bluislhi- 
grey with narrow contiguous convex lacinize ; beneath brownish 
(K + yellow). Apothecia and spores as in Ph, stellaris.—Cromb. 
in Journ. Bot. xxiii. p. 195 (1885). 
The thallus of our single specimen is of scattered almost isolated 
branching lacinizw, and recalls var. aipolia f. anthelina of the pre- 
ceding species, but differs from it in habitat. According to Nylander 
(l.c.) it is a widely spread species in the mountainous districts of 
Murope. 
Hab. On a calcareous wall among mosses.—B. M. Appin, Argyll. 
the only British locality. 
10. Ph. hispida Tuckerm. Syn. N. Amer, Lich. i. p. 75 
(1882).—Thallus spreading, formed of narrow branching hori- 
a 
