326 ON SOME BRITISH MOSSES 
land, Yorkshire, and Derbyshire ; it was gathered in the Pyrenees by 
Mr. Spruce, and I have a specimen from Arnold marked Trichostomum 
rvbettum, /3. 
M. Schimper, who makes no mention of this species having been 
previously known in Britain, describes it as more robust than T.fallax, 
and says nothing about its trifarious leaves, — a character which may, 
however, on the fertile plant, be less obvious than it is on the more 
slender shoots ; he describes the fruit as similar to that of T.fallax. 
T. gigantea = Grbnmia gigantea, Schimp. Synops. p. 695 ; " Tri- 
chostomum gigauteum, Funk ; Barbula robusta, Al. Braun ; Dicranum 
speciosnm, Sauter," according to a label written by Arnold ; Barbula 
recurvifolia, Mitten, Muse. Ind. Or. in Journ. of the Linn. Soc. 1859, 
p. 34 ; Tortula vinealis, var. nivalis, Spruce, Muse. Pyren. n. 185, — is 
a far more robust species than the preceding, but has its foliage, when 
wet, recurved in the same manner, the cells of the upper part of its 
leaves many-angled with wide interstices ; it has been found in Ireland 
by Mr. D. Moore. No fruit of this fine Moss has yet been seen, but 
ifolia 
ft 
robust and taller, from one to two inches high ; its leaves are patent 
from the very base, when dry they are incurved and closely imbricated, 
lanceolate-subulate, canaliculate; the margin recurved below; the 
nerve percurrent and distinct from the lamina to the apex of the leaf ; 
cells everywhere rounded, subobscure ; the perichrctial leaves with 
their lower half erect, broadly ovate, the upper narrow and recurved ; 
the seta is red, the capsule erect, cylindrical, with a shortly subulate, 
slightly twisted operculum ; the peristome short ; the teeth narrow, 
almost smooth, seated on a very short membrane. It is Trichostomum 
rigidulum, a, Bryol. Europ. Trichostomum, t. 7 ; Schimper, Synops. 
p. 148 ; Wils. Bryol. Brit. p. 114 ; and Musci Exsicc. n. 109 ; it is 
also T. rigidulum, Funk, Crypt. Eichtelgebirgs, 612. 
The habitat of this Moss is stated to be on rocks and stones near 
water. — Scotland, Drummond. Yorkshire, near Bolton Abbey, Mr. 
Wilson. Ireland, Miss Hutchins. 
This species, which in the ■ Bryologia Europsea ' is beautifully 
figured as the typical state of Hed wig's Didymodon rigid ulns, differs 
from that Moss in many important particulars : its leaves have no 
erect base, with no elongated pellucid cells, and the nerve has no ap- 
