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Applecross, Iio.s.s-stiire. Fairlieatl, co. Antrim ; Lug
Killarney, co. Kerry; Derryclare, Connemara, co. G:
elaw, CO. Wicklow ;
lalway.
Form p a n n ifo rm e Cromb. Grevillea, xv. (1887) p. 77.—Thallus
lobulato-dissected, closely imbricate, th e lobules small, crowded,
beneath dark-brown. Apotheoia small.
lias the appearance of other panniform conditions of foliaceous lichens.
The apothecia, which iu the specimens seen are with one exception very
sparingly present, are small and confined to the larger lobules.
Hab. On the mossy trunks of trees, and on boulders in maritime and
upland districts.—Distr. Local and scarce in S.AV. England and the W.
Highlands of Scotland.—B. M. : Near Penzance, Cornwall. Barcaldine,
Argyleshire ; Glen Lochay, Perthshire ; by Loch Linnhe, Inveruess-shire.
fl. H ib e rn ic um iVyl. ex Leight. Lioh. Fl. ocl. 3 (1879) p. 100.—
Thallus with the medulla white (K - f purplish). Apotheoia with the
back of th e receptacle smoothisii. Otherwise as in th e type.
A very distinct variety, if not subspecies, characterized by the white
or whitish medulla, in which respect it resembles N. læoigatum. The
chemical reaction, however, shows it to belong to N. limtanicmn. In the
specimens seen the apothecia have the back of the receptacle smooth or
subsmootli ; though as this occurs also in younger and muscicole states of
the type, it can scarcely he regarded as of diagnostic value.
Hah. On the trunks of old trees among mosses on rocks in maritime
tracts.—Disir. Local and scarce in W. England, the AV. Highlands of
Scotland, and N.VA’. Ireland.—B. M. : Near Walkingham, Devonshire;
Launceston, Cornwall ; near Douglas, Isle of Man. Barcaldine, Argyleshire
; by Loch Linuhe, Inverness-shire. Doughbruagh Mts., co. Gahvay.
52. PE L TIG ERA Hoffm. Deutsoh. Fl. ii. (1795) p. 108 pro p a rto ;
Nyl. emend. Flora, 1806, p. 116.—
Thallus fragile, opa<]ue or somewhat
shining, th e cortical layer not continuous
on the under surface, which is
generally nerved ; gonidial layer
composed of gonimia. Apothecia
adnate on th e fro n t margin of th e
thalline lobules, ascending or horizontal
; spores ( 6- ) 8iiæ, 3 - or pluri-
septate, fusiform, colourless ; hymenial
gelatine bluish with iodine.
Spermogones n o t known. “
As previously observed, this is well
separated from Peltidea, by the goni- Peltigera canina, Hoffm.—a. A syn-
miose and ecephalodiiferous thallus. gonimium, x 350. b. Free goni-
From the preceding it is distinguished mia, x 350. c. Spores, X .500.
by the cortical layer not being continuous
beneath, and by the position of the apothecia. The rhizinæ also,
when present, are composed of fasciculate filaments. All the European
species occur in our Islands, and for the most part in considerable quantity.
1. P . malacea F r. Lioh. E u r. (1831) p. 44.— Thallus moderate,
smooth, opaque, thickish, usually very minutely punotato-tomen-
tellose or ohsoletely adsperso-pulverulent, livid-browu when moist,
greyish-glauoous or glaucous-brown, or p a rtly brownish when dry ;
beneath densely tomentose, with confluent nerves and without
veins, brownish-blaok, broadly whitish a t the margin. Apotliecia
moderate, orbicular, or nearly transverse, vertically adnate, browmsh-
red, th e margin orenulate ; spores elongato-fusiform, 3-5-septiffe,
0 0 5 8 -7 4 mm. long, 0 ,0 0 5 -6 mm. thick.— Cromb. Jo u rn . Bot. 1874,
p.’ 147 ; Leight. Lioh. Fl. ed. 3, p. 102 pro min. Peltidea
malacea Ach. Syn. (1814) p. 240 pro parte.
A very distinct species, though having a superficial resemblance to
some states of P. rufescens. The apotheoia, which are not very numerous
in our few British specimens, are adnate on short, somewhat broad thalline
lobules.
Hah. Among mosses on rocks and about the roots of trees in m«™-
tainous region3? -Dis<r. Gathered only in the S.AV. Highlands and the
N. Grampians, Scotland; may he found elsewhere.—B. JI. : Inverary,
Argyleshire ; Craig Cluny, Braemar, Aberdeeushire.
fl. mioroloha Njd. ex Lamy, Bull. Soo. Bot., xxv. (1878), p. 378.
— Thallus smaller, more divided; the lobes short, crisp, narrow.
Apothecia smaller, a t length incurved.
Smaller in all its parts, and might be mistaken for P. pohjdaetgla y
hymenina. In consequence of the thallus being more repeatedly lobed,
the apothecia are more numerous than in tlie type.
Hah Among mosses on walls in upland tracts of mountainous districts.—
Dist»-. Found only in the S. Grampians, Scotland.—B. M. : Glen
Lochay, Killin, Perthshire.
2. P. canina Hoffm. Deutsch. Fl. ii. (1795) p. 108. Thallus
lar»e impresso-unequal, opaque, more or less adpresso-tomentellose,
of moderaiie thickness, roundly lobed, brownish-green when moist,
greyish when drv : beneath w hitish, with prominent, concolorous or
pale nerves, and long white rhizinæ. Apotheoia moderate, subrotundate,
a t len g th revolute, brown or brownish-red, th e margin
nearly en tire ; spores elongato-fusiform, 3 -5 -sep ta te , 0,066 /0 mm,
long, about 0,004 mm. th ick .—JVIudd, Man. p. 82, t. 1, ng. 22 ;
Cromb. Lich. Brit. p. 29 ; Leight. Lich. F l. p. ¿TT
Peltidea canina Gray, Nat. Arr. i. p. 428 ; H«ok. _Fl. Scot ii. p. 60 ;
Sm E n g E l v. p, 215 ; ï a y l . in Mack, El. Hib. ii. p. 153. Lichen
caninus U n n . FL Sueo. (1755) n. 1 1 0 9 ; Huds. Fl. AngL p. 454 ;
Lightf. Fl. Scot. ii. p. 8 4 5 ; AVith. Arr. ed. 3, iv. p. _69 ; Eug. Bot.
t 2299 Lichenoides digitatum cinereum, latucce fo lu s smuosis Dill.
Muse 200 t. 27. f. 102 e . Lichenoides peltatum terrestre cinereum
maju's, fo liis divisis Dill, in Ray, Syn. ed. 3, p. 76, n. 78.—Most of
th e above, however, include also the following variety. Brit.
Exs. : Leight. n. 141 ; Mudd, n. 59.
The most common and best-known species of the genus, easily distinguished
hy the large thaUus, with its tomentellose and (when dry)
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