30 mm long 0,011-16 mm. thick or sm a lle r.-X . troclwdes
(1870); Leight. Lich. FI. p. 257; ed. 3,
?■ I ^ 4xrevillea iv. p. 23. Opegrapha saxigena var
trochodes Taylor ex Leight. in Ann. Mag. Nat. Hist. ser. 2
4*3 (1854) femwZarm limborina Nyl. in Flora li. p. "346
o Brit. p. 106; Leight. Lich. FI. p 406 ■
ect. o, p. 438. '
trochodes originated with Taylor in MS. ; he had
labelled a speciinen of this lichen, collected in Carig Mt., Kerry
r S ? L trochodes. By an error Leighton and
Crombie have quoted this name as if published by Taylor under 0
saxigena in Mackay FI. Hib. ii. p. 259 (1836).
S 7 r ® ^ Grampians of Scotland and in
Imrron, Kerry ’ Braemar, Aberdeenshire ; Dunuu
444. L sub g y ratu la Nyl. in Flora Ivi. p. 296 (1873).—Thallus
thin and discontinuous, dark-brown or blackish, opaque, faintly
cracked. Apothecia black, small, tuberoulate or gyrose ; hypothecium
blackish ; paraphyses slender, not distinct ; epitheciW
brownish; spores ellipsoid, 0,016 mm. long, 0,009 mm. thick-
hymenial gelatine pale-blue then tawny-wine-red with iodine —
Leight. in Grevillea iv. p. 26, t. 52, figs a, b, & Lich. FI. ed.‘ 3,
in IW®''® i f *1^® preceding in the more tuberoulate in the smaller colourless spores. apothecia and
Hab. On granitic rocks.-A. M. Summit of Morrone, Braemar
Aberdeenshu-e (the only locality). -u-iaemai,
XT i^^T - u' Sommerf. Suppl. FI. Lapp. p. 144 (1826) ;
Nyl Lich. Scand. p. 228.—Thallus indeterminate, thickish,
warted-areolate, the areolæ tumid, convex somewhat shinino-
£ “k A U C aC l + yellow) ; hypothalte
black. Apothecia adnate, moderate, convex, immarginate,
somewhat shining, black ; paraphyses coherent, dark-greenish at
th e apices, epithecium bluish-black; hypothecium colourless or
sordid ; spores ellipsoideo-oblong, 0,010-16 mm. long, 0,006-8 mm.
thick ; hymenial gelatine deep-blue, the asci a t length often sordid-
yiolet, with iodine.—Cromb. in Journ. Bot. viii. n 99 (1870'1 ■
Leight. Lidi. FI. p. 275; ed. 3, p. 278. L. a r!fla ta c J r o li
in Journ. Bot. iv. p. 24 (1866) (non Schær.) ; Cromb. Lich. Brit,
p. 82 ; Leight Licfr FI p 276; ed. 3, p. 279. Lichen miscellus
■Sm. Engl. Bot. t. 1831 (1808) (non Ach.).
differing chiefly m the more massive
-thal us, the thalline reactions, and the rather larger spores The
areolæ, at length somewhat rugose, are either crowded or more or less
scattered, in which latter case the hypothallns is more visible The '
numerous, are only in a young state very thickly :
Tb “ ®® 8'’-’® crowded, more convex, confluent and
diflorm. The very common spermogones have the spermatia straight,
oblong, 0,006-9 mm. long, 0,0015 mm. thick. I follow Leighton’s
suggestion in including the plant referred by Carroll to A. areolata
Schær. ; there is no specimen in the British Museum.
Hab. On rooks and boulders, granitic and schistose, in mountainous
regions.— Distr. Not uncommon in N. Wales and among the
Gi-ampians, Scotland; rare in N. England and W. Ireland.—A. M.
Cader Idris and Moel Gader, Dolgelly, Merioneth; Twll Du, Nant
Francon, Carnedd Dafydd, Trefriw, and Llyn Geirionydd, Carnarvonshire
; near Winch Bridge, Teesdale, D urham ; Ben Cruachan, Argyll ;
I Ben Lawers, Craig Tulloch, Craig Calliach and Ben Vrackie Perth- I shire ; Glen Callater, Braemar, Aberdeenshire ; Kylemore, Connemara,
I Galway.
Eorm Crnmhiei Nyl. in Flora liii. p. 38 (1870).—Thallus
■ ,1 sulphur-yellow or whitish-yellow. Apothecia innate, somewhat
convex; spores 0,010-12 mm. long, 0,006-7 mm. thick.—Cromb.
in Grevillea i. p. 173. L. Crombiei Jones ex Nyl. in Elora li.
I A p. 345 (1868); Cromb. in Journ. Bot. vii. p. 49 (1869), &
* I Lich. Brit. p. 82.
I Differs only in the colour of the thallus (which, however, becomes
I darker in the herbarium), in the constantly innate apothecia and the
j, rather smaller spores.
Î Hab. On rooks, granitic and schistose, in mountainous districts.—
ÿ Distr. Only a few localities in N. Wales, the Grampians, Scotland,
and W. Ireland.—A. M. Dolgelly, Merioneth; Craig Tulloch, Blair
Athole, Perthshire ; The Khoil, Glen Callater, and Morrone, Braemar,
I Aberdeenshire; Mangerton, Killarney, Kerry; Doughruagh Mt.,
J Connemara, Galway.
¡ 146. L. armeniaca Er. Syst. Orb. Veg. i. p. 286 (1825) ;
Schær. Spicil. pp. 126, 193.—Thallus subdeterminate, thick or
«Î thickish, rimoso-areolate, the areolæ plane or somewhat convex,
rugose, sometimes imbedded in the rock, yellow-ochraceous or
yellowish-red (K + y e llow , then crimson, CaCl — , K(CaCl —) ;
hypothallns bluish-black. Apothecia innate, moderate, subplane,
or often convex, black, immarginate, dark within; paraphyses
concrete, dark-olive-brown a t the apices ; hypothecium colourless
or sordid; spores ellipsoid or oblong, 0,009-0,013 mm. long,
0,004-6 mm. thick ; hymenial gelatine deep-blue with iodine.—
Cromb. Lich. Brit. p. 83 ; Leight. Lich. PI. p. 251 pro parte ;
ed. 3, p. 243, pro parte. Rhizocarpon armeniacum DC. PI. Fr.
ii. p. 366 (1805).
Readily distinguished by the ultimate colour of the thallus and by
the^ thalline reactions. Represented in the British Islands by two
varieties,^ both of which, according to Nylander, grow together with
intermediate states on the mountains of Dauphiné.
Yar. /3 aglæoides Nyl. in Act. Soo. Sci. Fenn. vii. p. 401
(1863).—Thallus normally yellow or pale-ochroleucous, the areolæ
usually rugose. Apothecia convex; spores -0,009-0,013 mm.
0,0045-55 mm. thick.—Cromb. Lich. Brit. p. 83.
G 2