CüLLlOMACHI . COLM'RMA.
• t
riinbridgo Wells, Kent ; St. Leoniird'.s Fore.st and ilenfield, Sussex ; New
l'ore.st, _]Iampsliive; Banuoutli, Aleiionethshire ; Ingleby, Cleveland,
i orJi.sbire. Barealdine, Argyleshire ; uear Killin and Aberfeldy, Perthshire
; Loch Lmnhe, Inverness-shire. O’Sullivan’s Cascade and Derry-
CLimtry, Killarney, co. Kerry.
23. C. fasciculare Aoh. Lich. Univ. (1810) p. 039.—ïhallu.s sub-
crenato-lobulafcc, brownish-grcon or dark-green (l-fb lo o d -rc d ) ;
lobules rounded, usually in eroct, small, subpedicellato tufts, dilated
upwards. Apotheoia small, very numerous and crowded, biatorine,
somewhat convex, reddish, tho margin th in , undulate ; spores fusil
form, normally 3- sometimes 1-septato, 0 ,0 1 6 -2 9 mm. long, 0 ,0 0 4 -0
mm. thick.— Oollema fa sc ka la re Hook. F1. Scot. ii. p. 7 1 Sm.
Eng. Fl. V . p . 210 ; Cromb. Journ. Bot. 1874, p . 334 ; Leight.’ Lich!
El. ed. 3, p. 24. Enchylium fasciculare Gruy, Nat. Arr. i. p. 398.
FAchen fascicularis Linn. Mant. ii. (1771) p. 1 5 3 ; Lightf. FI Scot'
ii. p. 841 ; Huds. Fl. Angl. ed. 2, p. 5 3 6 ; With. Arr. od.'3, iv!
p. / 6 ; Eng. Bot. t. 1162. Synechoblastus conglomeratus (Hoffm.)
Aludd, Alan. p. 43. Oollema conglomeratum Cromb. Lich. Brit. p. 6 ;
Leight. Lich. Fl. p. 23. Lichenoides gelatinosum palmatum, tuber-
eulis conglomeratis Dill. AIusc. t. 19. f. 27 a .
Distinguished by the thalline lobules of the thallus being fasciculate
except (in entire specimens) at the immediate circumference, where tliev
are crena.te and sterile. The apothecia are so crowded as sometimes to
render the tliallus invisible except when moistened; so that in dry
weather it is very apt to be overlobked.
Ileh. On the trunks of old trees in wooded upland districts.—Disft-
Docal, and not common where it occurs, iu the mountainous tracts of W
Bntain ; not detected in Ireland. B. AI. : St. Leonard’s Forest and Ilen-
iield, biissex; near Barmouth, Alerioiieth; Nant Glyn, Deubiglisliire •
Ambleside, W estmoreland. Loeli Katrine, Kenmore, and Den of Aberfeldy,
Perthshire ; Olova, Forfarsliire.
24. C. multipartitum Sm. Eng. Bot. xxxvi. (1814) t. 2582 —
Thallus laomiate, radiate, olive-brown or olive-blaok ; laciniæ n a r-
row multifid, somewhat convex, u n dulate and twisted, lobatoivided
a t th e apices, th e lobes divergent. Apothecia moderate
plane or convex, dark-reddish, the thalline margin thickish, en tire !
spores cylindrical, often somewhat curved, normally 3-septate and
variously oleoso-looular, 0 ,0 2 8 -4 8 mm. long, 0,007 mm. th ick -
paraphyses thick, pauoi-articulate.—Nyl. Syn. i p 116 t ii f 8 ■
Sm. Eng. Fl. v. p. 210 ; Tayl. in Alack. El. Hib. ii. p. 1()8 ! Cromh’
Enum. p.^ / ; Leight Lich. El. p. 26, ed. 3, p. 2V -S yn c eh o h la s tu s
mutUpartitus ilu d d , Alan. p. 4S.— B r it. Exs.-. Bohl. n. 70.
From states of C. melænum, especially îonajacohæifolimn, with which
wbTZ is distinguished by the radiating thallus
Winioe TV 1 and by the convex, undulate, or twisted
laciniæ. The laciniæ are sometimes rather discrete, and radiate continuously
from the centre, while at other times they are more or less
broken up and dispersed. As observed by Nylander (Syn. p. 117) the
internal structure of the thallus is nearly similar to th at of C. cheileum
COl.LHMA.] C0 I.IÆ J1E I . ->1
tlie <>-oiiiniia being not moniliforni but glomeruloso-coiigestod. The apo-
tbecfa are usually scattered over the whole tliallus almost to the apices of
tlie laciniæ.
Hah. On shady calcareous rocks and walls in maritime and upland
districts.—Bistr. Sparingly here and there in Great Britain, S. and W.
Ireland.—B. AI. : Alendip Hills aud near Yatton, Somersetshire ; Dovedale
and Buxton, Derbyshire; Oswestry, Shropshire; Nant Glyn, Denbighshire
; Settle, Yorkshire; Teesdale, Durham; Haversliaiii Head and
Ouiiswick Scar, Westmoreland; Lamplugh, Cumberland. Acliosragan
Hill, Appin, and island of Lismore, Argyleshire ; shores of Lock Tay and
Ben Lawers, Perthshire. Aliddleton, near Cork ; Kenmare aud O’Dono-
gliiio’s Prison, Killarney, co. Kerry ; Kjlemore, co. Galway.
25. C. isidioides Nyl. ex Arn. Flora, 1870, p. 232.—Thallus
granuloso-aggrcgato (isidioid), blackish, in siibpulvinute glomeruli.
Apothecia and spermogones unknown.— Nyl. Flora, 1883, p. 9 8 ;
Cromb. Jourii. Bot. 1885, p. 195.
The place of this species in the genus is uncertain in the absence of
fructification. Detected by Arnold in the Bavarian Alps, Nylander
observes th at the “ thallus consists of a congeries of syngonimia (sub-
globose 01- oblongo-diflbrm), with the filaments often indi.stinct.”
Hah. On calcareous rocks in nioiintainous districts.—Bistr. Gathered
only in N.W. England (Warton Craig, Westmoreland).
15. COLLEMODIUM Nyl. ex Lamy, Bull. Soc. Bot. F r.
t. xxv. (1878) p. 3 4 1 ; Nyl. Elora, 1875 (iit subgonus).—Thallus
small or gubmoderate,
variously lobed or
subfruticulose ; cortical
layer somewhat
distinct ; gonimia
more or less scattered,
partly moniliform.
Apotheoia urceolate,
leoanorine, rarely bi-
atorino ; spores 8næ,
ovoid or eUipsoid,
colourless, variously
septate and divided ;
hymenial gelatine
deep blue with iodine.
cPCb
Fig. 14.
CoUemodmm fluviatile Nyl.—a. Vortical section
of thaUus, x275. h. Gonimic granules separated
from the cells.
Spermogones with jointed sterigmata and
straight spermatia ohsoletely incrassate a t either apex.
Instituted by Nylander for various plants previously OTranged chiefly
under Collema. From Collema it differs iu the cortical layer being
distinct, though usually but slightly apparent. I t thus forms a tran.sitiqn
between Collema and Homodium, a subgenus of Leptoymm to which it
is closely related. The fructification is similar to th a t of Leptogium.
I . C. hiatorinum Nyl. ex Cromb. Grevillea, xv. (1886) p. 12.—
Thallus effuse, minutely granuloso-lobulate, imbricate,, brown or