n
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staiiüy biatorine apotbecia and by the thalline reaction with OaCl. In
tlie few British specimens seen the thaUus is comparatively small and
determinate ; but the apothecia are numerous and occasionally 2-3-
aggregate. The spermogones are only very sparingly present, with spermatia
0,018-20 mm. long, 0,0005 mm. thick.
Hab. On trunks of firs and on old pales iu maritime and imlaiid
tracts.—Distr. Seen only from a few localities in S. England, N. Wales,
the S.W. Highlands of Scotland and S.E. Ireland; no douht to be
detected elsewhere.—B. M. : Lyndhurst, New Forest, Hants ; Island of
Anglesea. Appin, Argyleshire. Great Island, co. Cork.
Var. p. sæpincola Nyl. Flora, 1872, p. 249.—Thallus effuse,
granulose or granuloso-unequal, a t times subevanescent. Apotheoia
biatorino-lecideine, convex, sordid-reddish or blackish ; spores
nooasionally th in ly 1-septate, 0 ,0 1 0 -1 7 mm. long, 0 ,0 0 4 -5 mm.
thiok.—Leight. Lich. F l. od. 3, p. 183 ; Cromb. Grevillea, xviii.
p. 69.—Lecanora varia var. sæpincola Cromb. Lich. Brit. p. 52 ;
Leight. Lich. F l. ed. 1, p. 193.— Lecidea sæpincola Ach. Syn. (1814)
p. 35.
Evidently referable to this species, of whioh it is a good variety, differing
in the colour of the apotbecia and the rather louger, less simple
spores. The thalline reaction with CaCl at once keeps it distinct from
var. ft of the following species, with which it might be confounded.
Hah. On old pales in upland situations.—Distr. Local in N. England
and aniong the Grampians, Scotlaud.—B. AI. : Hart, Durham ; Lamplugh,
Cumberland. itillin, Perthshire; Crathie, Braemar, Aberdeenshire.
120. L. s ym m ic te ra Nyl. Flora, 1872, p. 249.—Thallus effuse,
suhleprose or subgranulose, yellowish-straw-coloured (K + j'ellow,
CaCl — ). Apotheoia small, biatorine, convex, concolorous with th e
thallus, pale or dark-olivaceous, th e m argin excluded; spores
oblong, 0 ,0 1 0 -1 5 mm. long, 0 ,0 0 3 -5 mm. thiok ; hymenial gelatine '
bluish, th en taw n y w ith iodine.— Cromb. Jo u rn . Bot. 1873, p. 1 3 3 ;
Leight. Lioh. F l. ed. 3, p. 2 0 0 .—B r it. Exs.-. Aludd, n. 1 1 7 ; Larb.
Lich. Hh. n. 130.
Suhsimilar to the preceding species, with which till recently it has
been confounded, but differs at once in the reaction with CaOl. In
Britain it is a much more common plant, with the thallus spreading
extensively and the apothecia numerous. The spermogones are frequent
with spermatia as in L. 'symmicta.
Hab. On old pales and the trunks of trees in maritime and upland
districts. —Distr. General in G reat Brita in ; rare in the Channel Islands ;
not seen from Ireland.—B. AI.: Beauport, Island of Jersey. Henfield,
Sussex ; Lyndhurst, New Forest, H an ts; near Bovey Tracey, S. Devon ;
near Penzance, Oornwall; near Alinety, Wiltshire ; Alillhill, Aliddlesex ;
Gamlingay, Cambridgeshire ; Dolgelly, Merionethshire; Island of Anglesea
; near Ayton, Cleveland, Yorkshire ; Levens, Westmoreland. New
Galloway, Kirkcudbrightshire; Blairdrummond, uear Stirling ; Finlarig,
Killiu, and Ben Lawers, Perthshire; Nigg, Kincardineshire; Crathie,
Braemar, Aberdeenshire.
J a r . p . aitema Nyl. Flora, 1873, p. 229.—Thallus somewhat
thiokish, leprose, b rig h t yellow. xApotheoia small or submoderate,
convex,^ lecideoid, black ; spores 0 ,0 1 2 -1 7 mm. long, 0 ,0 0 4 5 -5 5
mm. thick.—Cromb. Grevillea, xviii. p. 69.— Lecanora varia var.
aitema Cromb. Lioh. Brit. p. 52 ; Leight. Lioh. F l. p. 192. L. symmicta
var. aitema ed. 3, p. 183. Lecidea aitema Aoh. Lich. Univ.
(1810) p. 178. Lecanora varia tj. denirjrata (non Fr.), Mudd, Alan,
p. 151.— Exs.-. Cromb. n. 6 6 ; Larb. Lioh. Hb. n. 2 5 5 ;
Mudd, n. 118.
Looks entirely as if a Lecidea, near L. parasema. I t is, however,
only a variety of tbis species, with which it agrees in tbe reactions, but
differs in the more leprose thallus and the colour of the apotliecia. The
thallus at times occurs in small determinate maculæ and is always well
fertile, the apothecia being colourless within. A state iu which there
are few or no traces of a thallus, with the apothecia crowded and often
less convex, is form depauperata Oromb. Grevillea I. c.
Hah. On old palings in upland districts.—Disfr. Not infrequent in Great
Britain ; not seen from Ireland or the Channel Islands.—B. AI. ; Near
Lyndhurst, New Forest, Hampshire; Shanklin, Isle of W ight; Dartmoor,
S. Devon; near Millhill, Aliddlesex; near Gamlingay, Cambridgeshire;
Battersby, Cleveland, Yorkshire ; Alston, Cumberland. Finlarig,
Kenmore, and Glen Lyon, Killin, Glen Fender, Blair Athole, Perthshire
; Crathie, Braemar, Aberdeenshire ; Rothiemurchus, Inverness-shire.
121. L. tr a b a lis Nyl. Flora, 1877, p. 458.—Thallus effuse,
glebuloso-grauulate, subverruooso-diffract, thinnish or submoderate,
greyish (K+ y ellow ish , CaCl—). Apotheoia small, adnate, somew
h a t convex, immarginate, pale-livid, sordidly palo-testaceous or
livid-blaokish ; spores ra re ly spuriously 1-septate, oblong, 0 ,0 0 9 -
0,014 mm. long, 0 ,0 0 3 5 -4 5 mm. thiok ; epitheoium granulose,
paraphyses slender ; hymenial gelatine bluish, th en siibinoolorous
(th e theoæ subpersistontly bluish) with iodine.— Lecidea sæpincola
var. trabalis Ach. Syn. (1814) p. 35.
Allied to L. symmictera, of which Nylander I. c. says it may perhaps
be a subspecies. In the Britisli specimens, one of which was recently
determined by him, the thallus is chiefly dark-grey from age. The
apothecia are numerous and often difformi-conuate.
Hab. On a decorticated stump of hornbeam oak in a wooded upland
tract.—Distr. As yet only sparingly in E. England.—B. AI. : Highbeech,
Epping Forest, Essex.
122. L. p in ip e rd a Koerb. P a r. Lieh. (1865) p. 81.—Thallus
effuse, th in , verruouloso-leprose, whitish (K f+ y e llow ish , CaCl — ).
Apothecia minute, plane or convex, subcarneous or brownish,
pruinose, th e thalline margin pale, thin, eutire, or suhcrenulate, a t
len g th excluded ; spores oblongo-ellipsoid, 0 ,0 0 8 -1 2 mm. long,
0 ,0 0 4 -5 mm. thiok ; hymenial gelatine deep blue, then tawny with
iodine.—Cromb. Journ. Bot. 1873, p. 133 ; Leight. Lioh. Fl. ed. 3,
p. 174.—B rit. Exs. : Leight. n. 176 ; Cromb. n. 160.