RINODINA | PHYSIACEX. 251 
sophodes t. malangica Leight. Lich. Fl. p. 215 (1879); var. 
malangica Cromb. in Grevillea xviii. p. 46 (1889) & Monogr. i. 
p. 394. Specimen not seen. 
The B. M. specimen recorded as var. malangica is Buellia myrio- 
carpa. It was collected by Leighton on Haughmond Hill, Shropshire. 
Hab.—On trunks of trees.— Distr. Sparingly in W. England ?. 
4, R. exigua 8. F. Gray Nat. Arr. i. p. 450 (1821).—Thallus 
effuse, thin, membranaceous and continuous or areolate, often 
granular and scattered, whitish or pale- to dark-grey, hypothallus 
black, but rarely distinct (K—). Apothecia small, plane, the 
disc blackish, with a thin thalline margin, entire or crenulate, 
becoming convex with the margin excluded ; paraphyses narrowly 
clavate, septate and brown at the tips; spores fusiform-ellipsoid, 
11-18 » long, 6-8 » thick.—Mudd Man. p. 142 pro parte (incl. 
var. periclea). R. periclea S. F. Gray Nat. Arr. i. p. 449 (1821) 
pro parte. Lichen exiguus Ach. Lich, Suec. Prodr. p. 69 (1798) ; 
Engl. Bot. t. 1849 pro parte. JL. pericleus Sm. Engl. Bot. 
t. 1850 (1808) (non Ach.). Lecanora periclea Hook. in Sm. 
Engl. Bot. v. p. 187 (1833); Tayl. in Mackay Fl. Hib. ii. 
p. 133. L. ewigua Hook. in Sm. Engl. FIL. v. p. 187 (1833) pro 
parte ; Cromb. Monogr. i. p. 395 pro parte. LL. sophodes var. 
exigua Cromb. Lich. Brit. p. 49 (1870); f. eaigua Leight. Lich. 
Fl. p. 224 (1871); ed. 3, p. 214. 
Exsicc. Larb. Lich. Hb. nos. 169, 262. 
Not easily distinguished from I. sophodes, but the thallus is 
usually more spreading and thinner, and the apothecia are smaller 
and less persistently marginate ; the spores also are slightly smaller. 
Hab. On trees, or more frequently on palings in maritime and 
inland districts—Dist. Fairly common throughout the Channel 
Islands and England, evidently rare in Scotland and Ireland.—B. M. 
Noirmont, Jersey; Lyndhurst, New Forest, Hants ; Hurstpierpoint. 
Sussex; Epping Forest, Essex; near Bristol, Somerset; Weston, 
Oxfordshire ; near Morda, Oswestry, Shropshire; near Worcester ; 
Suffolk; Yarmouth, Norfolk ; Ayton, Cleveland, Yorkshire. 
Var. lecideoides Th. Fr. Lich. Scand. p. 203 (1871).—Thallus 
grey, scanty or absent. Apothecia small, thin, plane, with a 
greyish thalline margin becoming crenulate or disappearing : 
spores oblong, 16-20 » long, 8-11 p thick.—Lecanora sophodes 
var. lecideoides Nyl. Lich. Scand. p. 149 (1861) ; f. lecideoides 
Leight. Lich. Fl. p. 225 (1871); ed. 3, p. 215 pro parte. 
L. exigqua var. lecideoides Cromb. in Grevillea xviii. p. 46 (1889) 
& Monogr. i. p. 396. 
Though with somewhat larger spores, resembles FR. exigua in the 
habitat and in the subentire margin of the apothecium, which 
generally becomes excluded. 
Hab. On old palings in inland districts.—Dist. Rare in 8S. England 
and Central Scotland.—B. M. Lyndhurst, New Forest, Hants ; Glen 
Lochay, Killin, Perthshire. 
