298 CYCLOCARPINE [LECANORA 
it as allied to L. piniperda. The reactions agree with those of 
L. symmicta, but are not always very pronounced. The spermogones 
have spermatia arcuate, 12-16 p» long, 5 p» thick. 
Hab. On rocks in maritime districts.—Distr. Rare in the Channel 
Islands and in W. Ireland.—B. M. Rozel, Jersey ; Salrock, Connemara, 
Galway. 
Var. chloropheoides A. L. Sm.—Thallus effuse, minutely 
granulate (K + yellow, K(CaCl) + orange-red). Apothecia more 
numerous and slightly larger, otherwise similar to the species.— 
L. chloropheoides Nyl. in Flora lvi. p. 290 (1873); Cromb. in 
Journ, Bot. xii. p. 148 (1874) & Monogr. i. p. 442; Leight. Lich. 
Fl. ed. 3, p. 184. 
Exsicc. Larb. Lich. Hb. n. 98. 
Thallus and apothecia are more abundant than in the species, from 
which it differs in the reaction with CaCl, possibly due to the more 
developed state. 
Hab. On rocks in maritime districts.—B. M. Vale Castle, Guernsey. 
F. Sulphurea group.—Thallus variously yellow (reactions 
various or none), Apothecia persistently light-coloured or 
becoming dark, 
46. L. expallens Ach. Lich. Univ. p. 374 (1810) (excel. var. 
conizea).—Thallus effuse, thinnish, leprose-pulverulent, pale- 
sulphur-yellow (K + yellow, CaCl + orange-red or brownish). 
Apothecia few, small, subinnate, plane or slightly convex, pale- 
yellow or flesh-coloured, the thalline margin thin, generally 
excluded ; paraphyses coherent, stoutish, septate, the epithecium 
of brownish-yellow granules; spores ellipsoid-oblong, 8-16 p» 
long, 4-5 p thick.—Leight. Lich. Fl. p. 199; ed. 3, p. 184; 
Cromb. Monogr. i. p. 432. IL. varia var. ordsthea Mudd Man. 
p- 150 (1861). Lichen orostheus Sm. Engl. Bot. t. 1549 (1806) 
(non Ach.). Lepraria expallens Pers. ex Ach. 1. ¢. Lecidea 
expallens Borr. ex Hook. in Sm. Engl. Fl. v. p. 181 (1833) pro 
parte ; Tayl. in Mackay FT. Hib. ii. p. 127. 
Ezsicc. Johns. n. 320; Larb. Lich. Hb. n. 216. 
Distinguished from the equally leprose L. farinaria by the thinner 
paler thallus, which recalls that of Lecidea lucida. The reaction with 
CaCl is not always very clear; often it is yellow changing to brownish. 
The apothecia are scanty in the species, and the spores generally 
rather small; in the variety they are better developed and up to 16 u 
in length. 
Hab, On trunks of trees (fir and oak) and on old palings in lowland 
and upland districts.—Disty. Here and there throughout Fngland, 
N. Wales, 8.W. and N.W. Ireland, not seen from Scotland.—B. M. 
Near Bovey Tracey and near Newton Abbot, Devon; Glynde, Sussex ; 
Coleshorne and Oakley Park, Cirencester, Gloucestershire ; Tetsworth, 
Oxfordshire ; Ickworth, Suffolk ; Thetford, Norfolk ; Upton, Worcester- 
shire; Dolgelly, Merioneth; Garn Dingle, Denbighshire; Anglesea; 
