202 CYCLOCARPINE.® | PLACODIUM 
Var. pusillum Flag. Lich. Fr.-Comté p. 231 (1886).—Thallus 
smaller, the lacinix short, plicate-radiate at the circumference, 
often absent, more broken up into lobules or separate small 
squamules at the centre, naked or white-suffused, vitelline or pale- 
yellow, Apothecia small, becoming plane or convex, concolorous ; 
spores as in the species or somewhat smaller.—Placodium 
miniatum Leight. Lich. Fl. ed. 3, p. 162 (1879) pro parte. 
Pl. murorum var. miniatum Mudd Man. p. 134 (1361) pro parte ; 
Cromb. Lich. Brit. p. 45 (1870) pro parte; Leight. Lich. Fl. 
p. 175. Lichen miniatus Hottm. Enum. Lich. p. 62 (1784)? 
L. tegularis Ehrh. Exs. n. 304 (1785) nomen nudum.  L. elegans 
Sm. Engl. Bot. t. 2181 (two left-hand figs.) (1810) (non Link). 
Squamaria miniata Hook. in Sm. Engl. Fl. v. p. 195 (1833)? 
pro parte. Physcia pusilla Massal. in Flora xxxv. p. 567 (1852). 
Lecanora obliterascens Nyl. in Flora lxvi. p. 99 (1883) ; Cromb., in 
Journ. Bot. xxiii. p. 195 (1885). LL. murorum subsp. tegularis 
Nyl. in tom. cit. p. 106; Cromb. Monogr. i. p. 360 (incl. var. 
obliterascens). 
Exsice. Johns. nos. 71, 98; Larb. Lich. Hb. n. 51; Leight 
n. 207 ; Mudd n. 95. 
With a non-radiate less developed thallus than the species, and 
closely approaching the pulvinate form; the lobate character is 
constant. The colour varies from citrine-yellow to brownish-red, 
hence the ambiguous term miniatum. The apothecia are generally 
crowded, and tend to become convex, with the thalline margin 
disappearing (var. obliterascens). 
Hab, On rocks and walls, rarely on old timber, in maritime and 
inland situations.—Dist. Rather rare throughout Great Britain and 
the Channel Islands.—B. M. Rozel, Jersey; near Glynde, Sussex ; 
Kemble, Gloucestershire ; Weston, Oxfordshire; Llangmynech Hill, 
Shropshire; Ayton, Cleveland, Yorkshire; Broughton Castle, West- 
moreland; Bassenthwaite, Cumberland; near Callander, the Tros- 
sachs and Craig Tulloch, Perthshire; Will’s Braes, Forfarshire ; Cove, 
Kincardineshire. 
Form Arnoldi A. L. Sm.—Thallus very small, the thalline 
lobules scattered or contiguous, not radiate, cinnabarine. Apo- 
thecia minute, concolorous. —Placodium murorum var. pusillum 
Cromb. in Journ. Bot. viii. p. 97 (1870)? (non Massal.). Leeanoru 
miniata Tayl. in Mackay Fl. Hib. i. p. 140 (1836) (? Hoffm.). 
L. Arnoldi Wedd. in Bull. Soc. Bot. Fr. xxii, p. 96 (1876). 
L. murorum subsp. tegularis £. Arnoldi Cromb. in Grevillea xviii. 
p- 45 (1889) & Monogr. i. p. 361. 
Searcely differing from the variety except in the minute thallus 
and apothecia and in the constantly cinnabarine colour. 
Hab. On dry caleareous rocks in inland districts.—Distr. Rare in 
N.E. England, the Grampians, Scotland and S.W. Ireland.—B. M. 
Hartlepool, Durham; Morrone, Braemar, Aberdeenshire ; Dunkerron, 
Kerry. 
