lecanorine), saffron-coloured or tawny-orange.— Cromb. Grevillea
xvm. p. 4 b .— Lecamra aurantiaca var. erythrella Cromb Lioh B rit’
& P-'-O^ Lecanora erythreila
Hook. F l boot. 11 p 49 Sm. Eng. Fl. v. p. 186. Lecidea elythrella
l a j l . in Mack. F l. Hib. ii. p. 130. Rm o dm a erythrella Gray, Nat.
Arr. 1. p. 4o6. Lichen erythrellus Ach. Prodr. (1798) p. 43 ; Eng.
Bot. t 1993. Callopisma aurantiacum ft. flavovirescens Mudd’ Man'
i f flflff>-^^bescens Huds. Fl. Angl. i. p. 443 pro parte :
With. Arr. iv. p. lo pro parte. Lichen aurantiacus Lightf. F l Soot
11. p 810 pro p a rte .— Hrfi. E.rs. : Mudd, n. 100 ; Larb. Lioh. Hb'.
''ll developed tliallus, wliich is
often widely expanded. The colour also is of a deeper yeUow, though in
shady places it is at times yellowish-green. The apotliecia, which are
numerous, are also smaller, more convex, with the thalline margin very
seldom Yisible, even in young plants.
“ d upland localities.—Dfsfr.
Somewhat local, though plentiful where it occurs iu the more hilly tracts
of Great Britain ; apparently rare in N.W. Ireland.—B. M. ; llastin»s
Sussex; Saltasi! and Valley of Roeks, Lynton, Devonshire ; near Pen?
zance, Cornwall ; North Hill, Malvern, M'orcestershire ; Craig-y-Rliiw
Oswestry, and Llanymynech Hill, Shropshire; Snowdon, C a r n a F F i S
r,?^-h F ’rl a' ’ F h J^"n®I®®L Cumbeiland, Appm and Glen Orchy, ArgyleshWiree ’s tKmiollrienl aBndp;? TAol,s- to.n
Kinnoul Hill, and Blair Athole, Per/h’sh irfI Im to ? ^ r a f t S r S :
C e n t r a r : , CO aX iy .“ '" Aberdeenshire. Kylemore Lake,
Var ft. in a lp in a Nyl. Lich. Scand. (1861) p. 1 4 2 ._ T h a llu s thin,
paler whitish ; otherwise as in th e ty p e .-C rom b . Grevillea, xviii.
p. 4 o ; Lioh. B n t. p. 46 pro pa rte ; Leight. Lioh. Fl. p. 218 pro
minima parto ed. 3, p^ 207 pro minima parte.— Callopisma auran-
tiacum y. inalpinum Mudd, Man. p. 137 pro minima W t e Lecanora
malp in a Aoh. Lich. Univ. (1810) p. 388.
Differs in the colour of the thallus, which in our few specimens is
I f Lti’ u pale-yeJlowish. By British authors it h L not been
rightly distinguished from X. pyracea.
Hab. On mica-schist rocks in upland situations.—Dfsir Local and
scarce m N.W. Enoland and the S. Grampians, Scotland.—B. M • Harris
I f e r th s hX Cumberland. Glen Lochay and Ben 'Lawer“
+L— F rube scen s Nyl. Lioh. Soand. (1861) p. 1 4 2—Thallus
thmmsh, pale-yellowish or whitish. Apothecia convex, reddish-
saffron-coloured.—Cromb Grevillea xviii „ /Ci r • ?
tiaca ft. rubescens Ach. Meth ( S f p BR
c o b u r ^ l i p X f c i f characterized by the convex, differently
Hab. On schistose rocks in a subalpine region.—D isfr A’erv suarino-lv
on one o fth e fe. Grampians, Scotland.-B. M. ; Ben Lawers Perthshife
Subsp. 2. L. irru b e s c e u s Nyl. Flora, 1874, p. 318.—Thallus
effuse, thin, scattered, tawny-yellow, a t times subevanescent. Apothecia
subminute, biatorine, sessile, becoming convex and immarginate,
orange-red.—Cromb. Grevillea, xix. p. 60.
Differs in the characters given of the tballus and apothecia. The only
British specimen (fragmentary) is in lib . Salwey s. n. Lecidea picta Tayl.,
whicli Schærer (Enum. p. 149) referred to his var. 8. rubescens (non Ach.).
I t is, however, identical with that of Anzi, Lich. min. rar. n. 135, upon
which Nylander founded this subspecies.
Hab. On schistose rocks in a mountainous district.—Distr. Seen only
very sparingly from N. Wales.—B. M. : Near Barmouth, Merionethshire.
31. L. c re n u la te lla Nyl. Flora, 1886, p. 461.—Thallus subeffuse,
th in , unequal, rimóse, citrine-coloured (K + p u rp le ). Apotheoia
moderate, plane, zeorine, subooncolorous (K + p u rp le ), th e thalline
margin when present finely crenulate ; spores eUipsoid, polari-bilo-
ciilar (the loculi moderate), 0 ,0 1 6 -2 0 mm. long, 0 ,0 0 8 -9 mm. thick.
— Cromb. Grevillea, xviii. p. 45.
Well characterized bv the double margin of the apothecia. I t comes
near subsp.,D. erj/i/irella, but, as Nylander I.e. observes, is scarcely to
be subjoined under this. The thallus is little visible in the single specimen
seen, but the apothecia are numerous and occasionally crowded.
Hah. On quartzose rocks in a maritime di.strict.—Disfr. Very local
and scarce in N.W. England (Arnside, IVestmoreland).
32. L. ocbvacea Nyl. in Cromb. Lich. Brit. (1870) p. 46.—
ThaUus determinate, thinnish, continuous or obsolctely rimo.so-
areolate, ochrey-yellow (K + c rim so n ). Apotbecia small, sessile,
biatorine, a t first concave, th en plane, tawny-saffron or orange-
coloured (K + p u rp le ), the margin th in , p a le r : spores ellipsoid,
polari-bilocular, usually with longitudinal tube, 0,0 1 1 -12 mm. long,
0 ,0 0 6 -7 mm. thick.—Leight. Lich. Fl. p. 218, ed. 3, p. 208.—
Callopisma ochraceum Mudd, Man. p. 138, t. 2. f. 43. Lecidea
ochracea Schær. in Nat. Anz. 1819, p. 11. Lecidea ictérica Tayl.
Lond. Journ. Bot. 1847, p. 150 {fide Leight. I. c.).
Closely allied to L. aurantiaca, but distinguished among other characters
by the constantly biatorine apothecia and the smaller spores.
The structure of the latter definitely separates it from L. tetrasticha Nyl.,
to which externally it is almost similar and for which it is ofteu
mistaken. I t is usually limited by a more or less distinct whitish hypothallus,
and is always well fertile.
Hab On calcareous rocks iu maritime and upland tracts.—Distr. Very
local and rare in S.W. England, S. Wales, the S.W. Highlands of Scotlaud,
and ?S.W. Ireland.—B. M.: Hope Cove, near Kingsbridge, S.
Devon; Giltar Point, Tenby, Pembrokeshire. Island of Lismore,
Argyleshire.
33. L. fe rru g in e a Nyl. Act. Soc. Linn. Bord. ser. 3, t. i. (1860)
p. 322.—Thallus determinate or suboftuse, thinnish, areolato- or