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THE JOURNAL OF ROTANY 
described, and more characteristic. It is simply Rliacomitrium Tietero- 
stichum var. alopecurum. The leaves are shortly hair-pointed. 
G. fuliginea Stirt. in Ann. Sc. N. H. xvii. 171 (1908). (Arisaig; 
Sept. 1907.)—This is merely a rather robust form of G. trichophylla. 
There is nothing in the description inappropriate to this species. 
G.j usco-viriclis Stirt. in Ann. Sc. N. H. x. 112 (1901). (Tarbert 
in Harris; Aug. 1900.)—This is the sub-obtuse leaved form of 
Rliacomitrium lieterostichum var. alopecurum ( G. obtusci Lindb.). 
G. halophila Stirt. in Ann. Sc. N. H. ix. 177 (1900). (Unst, 
Shetland; July LSS-t.)—This is a Ceratodon, with nerve excurrent 
and margin entire or nearly so; probably C. conicus. Stirton has a 
MS. note “ doubtful whether the description referred to the G. halo- 
philaf whatever that may mean. There is, however, one packet only, 
and it contains no mixture, and the description seems quite applicable 
to the Ceratodou. 
G. hemipolia Stirt. in Ann. Sc. N. H. xi. 109 (1902). (Skye, 
near Iiroadford; 2 Sept., 1881.)—This is clearly G. ovata. Stirton 
does not compare it with that, and appears to have overlooked the 
affinity. 
G. JEEorni Stirt. in Scott. Nat. No. xxvii. p. 218 (1890). 
(“Scotland, Glen Ogle, Geo. Horne; Apr. 1887. Grimmia spiralis 
forma. Leaves not spirally twisted.”)—There is no doubt of this 
being the original of G. Horni , though the packet is not so labelled. 
It is the small form of G. funalis referred to in the “ Handbook,” 
showing scarcely any twisting of the leaves. The areolation and 
other characters quite agree. One or two stems show very clearly 
and prettily the spiral arrangement of the leaves, though the indivi¬ 
dual leaves when dry exhibit scarcely any spiral alteration of position. 
G. incequalis Stirt. in Ann. Sc. N. H. xvii. 172 (1908). (Gars- 
cube near Glasgow; Dec. 1905.)—This is that form of G. subsquar- 
rosa Wils. which in basal cells, presence of gemime, colour, and habit 
is quite characteristic, but the leaves are scarcely subsquarrose. 1 
have seen this form now from several localities, and look upon it as 
distinctly connecting G. subsquarrosa and G. trichophylla. Stirton 
seems to have been rather worried by the margin being recurved on 
one side only, but this is not infrequent in G. tricliopliylla, and usual 
in G. ovata. A further specimen, “ Dalmeny near Edinburgh; Dec. 
1905 ; Jas. McAndrew,” is the same thing. I find in my own 
herbarium a specimen from Corstorpliine Hill, near Edinburgh, July 
1900, coll. Jas. McAndrew, sent me as G. incequalis Stirton, which I 
have annotated “A form of G. subsquarrosa , quite similar to forms 
from Pembrokeshire ” (cf. Moss Exch. Cl. Peport, 1908, p. 277). 
G. papillulata Stirt. in Ann. Sc. N. H. xi. 110 (1902). (Tarbert 
in Harris.)—This is based entirely on the faintly papillose cells in the 
upper part of the leaf (totally distinct, as Stirton points out, from 
those of Rliacomitrium canescens) ; it is no doubt an unusual feature, 
but it occurs for instance in “Rliacomitrium lieterostichum var. 
gracilescens, Husn. M. Gall. 819,” to almost the same extent. It is 
not associated with any other characters, and can hardly be treated 
as more than a slight form, I think, of R. lieterostichum var. alo¬ 
pecurum. 
