REVISION OF THE BRITISH COLLEMACET, 333 
termediate, as it were, between the preceding and the following species, 
with larger subglobose spores. myrtococeum, Ach. Thi 
species is with diffic culty to be distinguished from these other two, and 
tiring a all three are referable to one and the same somewhat vari- 
able spec 
b. stirps C. lepides. 
Sp. C. confertum, Ach., apparently a a. rare British species, 
and nat pai as su oh since the days of Turn 
C. Eucollema, Cromb. a. stirps C. terrulents. 
C. terrulentum, Nyl. The apparently constantly granulose 
Sp. 6. 
thallus warrants the arrangement of this somewhat peculiar and very 
Tare species in a separate subsection. 
b. stirps CO. verruceformis. 
Sp. 7. C. ceraniscum, Nyl., an extremely rare plant of Ben 
Lawers, of which, subsequent to its artes very by Admiral Jones, I 
gathered only a single small specimen, near the same spot where it 
was first detected. 
ce. stirps C. pulpost. 
es Cc. on Hffm. This cate! to the authentic 
specimen ex hb. Sowerby in Hb. Mus. Br. manu Borrer, is entirely 
Seatiod!: with C. dermatinum, Borr. : ‘iteemedeaneds Kphlb., 
sed rare in the S.W. Highlands near Inverara ray. Var. pinguescens 
re at Finlarig, Killin, and Craig Tulloch, Blair Athole. Sp. 9. 
C. face ‘urvum, Ach. The true plant, which is best sme sye tat amy by the 
reaction with I. from the other species, with which it might be con- 
founded, does not ae - be at all common in this country. 
tunaforme, Ach., is characterised merely by oe the lobes of the 
thallus longer rer more aecsiy incised. Sp. 10. C. pulposum, Bernh. 
: is is a very variable species of w om ‘fi llowing forms and 
eties occur in Great Britain ik oe dtork 1. gra tum, Sw., 
‘apneniched by the lobes ‘and the margins of the apothecia being 
more or less granulated ey not E aidraquenit i in Linestane tracts, 
but rarely | fertile. F. 2. compactum (A Ach.), eae by the closely- 
Sth. = a | pparent y in and 
ngland, and ay tertile, though gig inet F. 3. 
ry 
aringly and infertile. seit z. anes , Borr, This, ac ccording 
to the fragment of the original specimen in Hb. Sowerby, attached to 
0 
the characters a re e plant in Hb. Borr. at Kew are not very definite. 
Yee. -d, m, Nyl., a much ‘smaller plant than the 
apparently cng ore and as yet gathered only near Cirencester 
C. tenax 
gard istinct i 
districts, Sp. 11. C. subplicatile, N yl. “UC. plicatile, Arn. in 
1867 pro p.), amkoty similar to C. pulposum but with sail ee 
P wht as yet gathered vs sparingly at Appin, but no doubt to be 
tected elsewhe meizolobum, Nyl. (C. flaceidum, var. 
— olim i in Cromb. Enum., P-. 5), differs in having the 
