iodine.—Cromb. Lich. Brit. p. 64; Leight. Lich. FI. p. 250; ed.
3, p. 241. Psora gldbifera Massal. Lich. Ric. p. 91 (1852) ;
Mudd I. c.
Differs from the preceding in the smaller, more ascending, shining
rugulose thallus, and the more elevated, globose, often aggregate
apothecia.—Aooording to Th. Fries (Lich. Scand. pp. 411, 412) the
squamules are rarely more or less white-suffused and the apothecia
usually violaceo-pruinose, neither of which characters are apparent
in the few, chiefly fragmentary, British specimens.
Hah. On the ground in crevices of rooks in hilly and mountainous
regions.—JDistr. Found only very sparingly in W. England, N. Wales,
S. Scotland, and on the S. Grampians.—B. M. Greeba Mt., Isle of
Man ; Dolgelly, Merioneth ; Arthur’s Seat, Edinburgh ; Ben Lawers,
Perthshire.
3. L. rubiformis Wahlenb. FI. Lapp. p. 479 (1812).—Thallus
squamulose, imbricate, pale-sordid-brownish, white, beneath (K —,
CaCl — ) ; squamules ascending, small, firm, subreniform, usually
white and crenate a t the margins. Apothecia small, adnate,
convex, immarginate, often aggregate, blackish or slightly
seruginose-suffused; hypothecium pale-brownish ; paraphyses
concrete, reddish a t the apices ; spores 8nate, ellipsoid or oblong,
0,012-17 mm. long, 0,005-7 mm. th ick ; hymenial gelatine
bluish then sordid with iodine.—Carroll in Journ. Bot. iii. p. 289
(1865) ; Cromb. in Crevillea xxii. p. 9. L. globifera var. rubiformis
Cromb. Lich. Brit. p. 64 (1870); Leight. Lich. FI. p. 250;
ed. 3, p. 241. Bseomyces rubiformis Wahlenb. in Ach. Meth. p. 324,
t. 7. f. 5 (1803). Lichen rubiformis Sm. Engl. Bot. t. 2112
(1810). Lepidoma rubiformis S. E. Cray Nat. Arr. i. p. 461
(1821). Psora rubiformis Hook, in Sm. Engl. El. v. p. 193
(1833) ; the description “ apothecia hollow, red ” applies apparently
to a difierent species referable to Cladonia {of. Mudd Man.
p. 62). The specimen figured in Engl. Bot. is not among
Sowerby’s p la n ts ; and I am unable to find it in Smith’s
herbarium a t the Linnean Society.
Intimately related to L. globifera, of which it is probably only a
variety, differing chiefly in the colour of the thallus and the slightly
larger spores. I t is often csespitose with the squamules nearly erect
{fide Th. Fries Lioh. Scand. p. 413 (1874)), which is not so distinctly
marked in our two small specimens. The constantly convex
apothecia are at length conglomerate, presenting, as Wahlenberg
says, the appearance of tbe fruit of Bubus ccesius.
Hah. On the ground in crevices of rooks in an alpine situation.—
B. M. Ben Lawers, Perthshire.
4. L. rhizobola Nyl. in Flora xlvhi. p. 4 (1865).—Thallus
squamulose, appressed, chestnut-brown or lurid-brownish (K —,
CaCl —) ; squamules rigid, rounded or rotundato-diiform, crenate
a t the margins, pale or whitish beneath, unequal, with long
central radicles. Apothecia moderate, convex, blackish, pale
within ; paraphyses not well discrete; spores oblong-ellipsoid.
0 012-16 mm long, 0,006-7 mm. th ic k ; hymenial gelatine wine-
red with lo d in a—Carroll in Journ. Bot. iii. p. 289 (1865)-
Cromb. Lich. Brit. p. 64 ; Leight. Lich. El. p. 251 ; ed. 3'
_ Easily distinguished from its immediate allies by tbe squamules
and d i° r d e i '"tMs ^^¿iculose, with and divided. This character also separates it from tthbee oratdhiecrl essn elocinegl
fertile! ^ ^ tish specimen seen is but sparingly
Hah. On the ground among rooks in an alpine s itu a tio n .-A M
Near tbe summit of Ben Lawers, Perthshire.
5. L. testacea Ach. Meth. p. 80 (1803) & Syn. p. 51 (1814) —
Thailus appressed squamulose, greenish- or livid-grey, or greyishcrenTte
H squamules rigid, subimbricate, undulatocienate,
white beneath and a t the margins. Apothecia moderate,
sessile, convex, orange-red or testaceous, whitish w ith in ; parai
physes subdiscrete orange or tawny a t the apices ; hypothecium
colourless ; spores 8nate, ellipsoid, 0,010-13 mm. long, 0 ,&5 -7 mm
thick ; hymenial gelatine bluish then sordid-violet with iodine U
LLiicchT. 1t rp. 9999', fir 5f , 6 (1790). Lichen saxifragus Sm. Hinof fTmr.a nPsI.
with paler margin, but when more advanced become convex and
The spermogones, not visible in our specimen, are
pale, with the sterigmata simple, rarely 2-3-iointed, and sneriintin
"J*-
6. L glaucolepidea Nyl. in Mém. Soc. Cherb. v. p. 337 (1857)
nomen); Carroll in Nat. Hist. Rev. vi. p. 526 t 32 if 9 3
i r 2 ? (K c i ''c T c i ^ ^ ^ ^ membranaceous, squamulose, glaucous-
„reen (Kf-f-, C a C l - ) ; squamules small, somewhat scattered or
contiguous, ascending, rounded, inciso-lobed, crenate, and often
S T o i e w h a t l a r ? ^^nate, moderate
biackkb \ immarginate, reddish-brown or
tinnì ^ a thick, pale-brown ; paraphyses conglu-
L n a te ; spores 8nate ovoid or oblong, 0,012-16 mm. long, 0,005-7
mm. th ick ; hymenial gelatine bluish then sordid with iodine —
Cromb. Lich Brit. p. 63 ; Leight. Lich. El. p. 251 ; ed. 3 p 243
Psora glaucolepidea Mudd Man. p. 171, t. 3. f. 62 (1861)
When sterile might readily be taken for the basal thallus of a
(Badonia near C. delicata. In this condition as regards c £ r and
mode of growth it resembles Normanddna, but differs in the form
oI the „ 3 f c i , T h 7 .“ fc e ”