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. multifiorum 
var. palmatum Hepp, is rejected on account of the homonym Leptogium 
palmatum ore eee £xs.: Leight. n. 106. 
A well-marked variety, distinguished by the apothecia being sessile. 
They are generally more numerous than in the type, sométimes becoming 
large and proliferous, with the subentire or subgranulate margin ob- 
literated. 
Hab. On the ground and on walls in maritime and upland districts. — 
Distr. General in §., W., and N. England, N. Wales, the W. Highlands, 
Scotland, and S.W. Ireland—B. M.: Amberley, Sussex ; near Claver- 
ton, Somerset ; near Malvern, Worcestershire ; near Shrewsbury, Shrop- 
shire; Barmouth, Merionethshire; Island of Anglesea; near Ayton, 
Cleveland, Yorkshire. Campsie Glen, near Stirling ; Appin, Argyleshire; 
Killin, Perthshire; Lochaber, Inverness-shire. Blackstone Bridge, co. 
Cork ; Dunkerron, co. Kerry. 
12. C. glaucescens Hoffm. Deutsch. FI. ii. (1795) p.100.—Thallus 
thin, appressed, lobed, sordid-green or dark-olive; lobes small, round 
or oblong, approximate or scattered, entire or slightly crenulate. 
Apothecia moderate, appressed, plane, reddish-brown or red; the 
thalline margin thin, scarcely prominent, entire or slightly crenate ; 
spores usually tne (6nz), ovoid, 5-septate, with several longitudinal 
septules, 0,027-38 mm. long, 0,014-16 mm. thick.—Cromb. Gre- 
villea, xv. (1866) p. 11.—Collema limosum Ach., Borr. in Eng. 
Bot. Suppl. t. 2704. f. 1; Sm. Eng. Fl. v. p. 208; Tayl. in Mack. 
Fl. Hib. ii. p. 108; Cromb. Lich. Brit. p. 4; Leight. Lich. FI. 
p. 21, ed. 3, p. 19. Collema pulposum y. limoswum Mudd, 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, however, isin 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 §.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, Kent; Hurstpierpoint, Sussex ; 
Wootton-under-Edge, and near Cirencester, Gloucestershire ; Bulstrode, 
Buckinghamshire ; Buxton, Derbyshire ; Hawford and Norton, Worces- 
tershire; Coatham Marshes, near Ayton, Cleveland, Yorkshire; Miln- 
thorpe, Westmoreland. Fort Augustus, Inverness-shire. 
13. ©. crispum Ach. Syn. (1814) p. 311.—Thallus lobato- 
divided or subradiate, dark-green or brownish-black ; lobes some- 
what erect, granulate and crowded in the centre, depressed and 
dilated at the circumference, the larger granulato-crenate at the 
margins (I+reddish). Apothecia moderate or somewhat large, 
plane, reddish or dark-red, the margin crenato-granulate; spores 
ovoid, usually 3-septate, becoming irregularly murali-locular, 
