40 C0LI.EMACE1. [oollema.
Var. p. pulposulum Nyl. ex Cromb. Journ. Bot. 1874, p. 147.—
Thallus smaller, granuloso-lobulate, scattered or bu t little developed.
Apothecia ra th e r small, numerous ; spores oblong or fusiformi-oblong!
3-septato, with 1 or 2 longitudinal soptules, 0 ,0 2 0 -2 8 mm. Ion»-’
0 ,0 0 7 -0 ,0 1 0 mm. thick.—Leight. Lioh. Fl. ed. 3, p. 10.— LoZZcma
p u fo s id u m Nyl. Act. Soo. Linn. Bord. xxv. (1864) p. 7.
A distinct variety well characterized by the granulose, dispersed thaUus,
and tiie form of the spores. I t is much smaller than the type, though
externally similar. ®
. upland situations.—Dikir. Local and scarce
in \V. Jiiiigland, thougli no doubt overlooked elsewhere.—J3. M • Near
Cirencester, Gloucestershire.
, v Z ' ire r e ? ^ ^ P- 314.—Thallus imbrieatolobed,
thickish, dark-glaucous or dark-greenish ; lobes round, obtuse,
iiiciso-creiiate or subpalmate a t th e margins (I-|-red d ish ). Apo-
thecia moderate, in nate, concave, reddish, th e margin entire, soaroely
p rom in e n t; spores ovoid or oblong, 3-septate, with a longitudinal
septum, 0,0 1 8 -2 5 mm. long, 0 ,0 0 9 -1 0 mm. th ic k .-S m . Eng. El.
V. p. 209 ; Mudd, Man. p. 39 ; Cromb. Jo u rn . Bot. 1874, p. 333.__
Collema pulposum var. tenax Cromb. Lich. Brit. p. 4 ; Leight. Lioh.
El. p. 19, ed. 3, p. 19. Enchylium tenax Gray, Nat. A rr. i. p. 397.
Lichen tenax Swrtz. N. Act. Ups. iv. (1784) p. 249 — E v s •'
Leight. n. 105, 2 9 0 ; Mudd, n. 1 ; Larb. Lioh. Hb. n. 201.
Distinguished from C. pulposum by the inciso-dentate or subpalmate
thalline lobes, the innate apothecia, the less prominent receptacle, the
larger spores, and the reaction with iodine. The apothecia are usually
scattered and not numerous.
Hah Anmng mosses on rocks, and on tha bare ground in upland
districts.—DmO-. Local and rather scarce where it occurs, throughout
En^and, in S. Males, the S. and W. Highlands, Scotland, and iu
N ,AV. Deland.—B. M .: Runton and Cromer, Norfolk; near Ightham,
Kent; Reigate, Surrey; Luccombe, Isle of W ig h t; the Mendips, Somersetshire
; Hathrop Castle,- Gloucestershire; near Bewdley, Claines, aud
Malvern, M orcestershire; Pentregaer, Oswestry, Shropshire; Tenby,
Pembrokeshire; near Ayton, Cleveland, Yorkshire; L a r Brigsteer
Westmoreland; Keswick, Cumberland. Appin and Island of Lismore
Argyleshire; Killin, Perthshire. Kylemore, co. Galway.
Var. /3. coronatum Koerb. Par. (1865) p. 413.—Thallus rather
th in n e r and more oppressed ; apotheoia sessile, plane or slightly convex,
w ith subentire margin, often large and confluent.—Cromb. Journ.
Bot. 1882, p. 272.— Collema pulposum var. cristatum Mudd, Man’
p. 39.^ Oollema cristatum Sm. E n g . El. v. p. 2 0 8 ; Tayl. in Mack."
PL Hib. ii. p. 108. Lichen cristatus Huds. FL Angl. p. 447 •
Lightf. Fl. Scot. ii. p 821;_ With. A rr. ed. 8, iv. p. 75. Lichenoide’s
gelatinosum jo in s imbricatis ct cristatis Dill. Miisc. 140, fc. 19. f 26
crassioribus, obscure virentihus
Dill. Ill Ray, Syn. 74. 68.
COLLEMA.] COLLEMEI. 47
Hudson’s specific name has priority, but as it might be confounded
with C. cristatum Hoffm., I have not used it. Similarly C. mullifiomm
var. pahnatum Hepp, is rejected on account of the homonym Leptogium
pahnatum (Huds.).—Brit. E x s. : Leight. n. IOC.
A well-marked variety, distinguished by the apothecia being sessile.
They are generally more numerous than iu the type, sometimes becoming
large and proliferous, with the subentire or subgranulate margin obliterated.
Ilah. On the ground and on walls in maritime and upland districts.—
Distr. General in S., AV., and N. England, N. AA’ales, the AA’'. Highlands,
Scotland, and S.W. Ireland.—B. M .: Amberley, Sussex ; near Claver-
ton, Somerset; near Malvern, Worcestershire; near Shrewsbury, Shropshire
; Barmouth, Alerionethsliire; Island of Anglesea; near Ayton,
Cleveland, Aterkshire. Campsie Glen, near Stirling; Appin, Argyleshire;
Killin, Perthshire; Lochaber, Inverness-shire. Blackstone Bridge, co.
Cork ; Dunkerron, co. Kerry.
12. C. glaucescens Hoffm. D eutsoh. PL ii. (1795) p .100.—Thallus
thin, appressed, lobed, sordid-green or d a rk -o liv e ; lobes small, round
or oblong, approximate or scattered, en tire or slightly orenulate.
Apothecia moderate, appressed, plane, reddish-brown or r e d ; the
thalline margin th in , scarcely prominent, entire or slightly crenate ;
spores usually 4u0e (6nie), ovoid, 5-septate, with several longitudinal
septules, 0 ,0 2 7 -3 8 mm. long, 0 ,0 1 4 -1 6 mm. thick.—Cromb. Grevillea,
XV. (1866) p. 11.— Oollema limosum Ach., Borr. in Eng.
Bot. Suppl. t. 2704. f. 1 ; Sm. Eng. F l. v. p. 2 0 8 ; Tayl. in Mack.
Fl. Hib. ii. p. 108 ; Cromb. Lioh. Brit. p. 4 ; Leight. Lioh. El.
p. 21, ed. 3, p. 19. Collema pulposum y . limosum Aludd, Man.
p. 39.
This is readily recognized by the agglutinate and somewhat evanescent
thallus, and by the appressed, thinly and often indistinctly margined
apothecia. Its chief characteristic, liowever, is iu the spores, which at
once distinguish it from states of the allied species. The apothecia are
at first slightly concave, and when the lobes are scattered are single in
each fertile lobe.
Hab. On moist clayey soil in maritime and upland tracts.—Distr.
Local and rare in S.W. and N. England, as also in the W. Highlands,
Scotland ; probably overlooked when the thallus is evanescent.—B. M .;
Near Southend, Essex ; Croham Quarry, K e n t; Hurstpierpoint, Sussex ;
AA^ootton-under-Edge, and near Cirencester, Gloucestershire; Bulstrode,
Buckinghamshire ; Buxton, Derbyshire ; Hawford and Norton, Worcestershire
; Coatham Marshes, near Ayton, Cleveland, Yorkshire; Miln-
thorpe, Westmoreland. Fort Augustus, Inverness-shire.
13. C. crisp-um Aoh. Syn. ( I 8 I 4 ) p. 311.—Thallus lohato-
dividod or subradiate, dark-green or brownish-blaok; lobes somewhat
erect, gran u la te and crowded in th e centre, depressed and
dilated a t th e cironmferenoe, th e larger granulato-crenate a t th e
margins (I-|-red d ish ). Apotheoia moderate or somewhat large,
plane, reddish or dark-red, th e margin orona to -g ra im late ; spores
ovoid, usually ii-sojitatc, bcoomiug irrogularly murali-looular.