194 NEW BRITISH MOSSES. 
opaque and furnished with a narrow diaphanous border (of 
empty cellules) at the expanded and semiamplexicaul base, _ 
papillose, especially towards the apex, where they are for the 
most part éruly, though minutely, denticulate ;* the margins 
more strongly inflexed and undulate; the nerve not paler 
than the pagina, not produced beyond the summit, and plane 
or slightly concave on the upper surface, but convex in T. tor- 
tuosa. 
In habit and in the shape of the leaves Tort. squarrosa 
bears considerable resemblance to Trichostomum Barbula, 
Schwgr. ; but the latter may be distinguished by the browner 
and more rigid leaves, which are patent but not squarrose and 
twisted, their margins more strongly incurved, their nerve 
broader and stronger, and their point less attenuated. 
Respecting Tortula squarrosa, Dr. Montagne has observed 
to me that it fructifies in Sicily and at Algiers. “ Elle vient 
aussi aux Canaries où M. Webb la récoltée, et elle figure 
page 35, de la Cryptogamie de ces iles. C’est bien à tort que 
Bruch et Schimper, qui n'ont pas vu le fruit, ont rapporté 
cette jolie Mousse au T. forfuosa, nam ab eà toto colo dis- 
tat." 
23. Tortula vinealis, Brid. 
Var. B flaccida, ** caule elongato, flexuoso, foliis remotis, 
angustioribus, siccitate valde curvatis," Bryol Eur. | 
“ Tortula insulana De Notar. Specim de Tortul. Ital. No. 
28 ;" (fide B. et S.) 
Zygotrichia cylindrica, Tayl. in Flora Hibernica, P. 2; 
p- 26. 
Has. * Ona stone by the Keswick road just out of the village 
of Ireby, where it formed one large patch ;" Mr. Borrer. 
By means of original specimens from Dr. Taylor, I have 
ascertained the synonym of * Flora Hibernica? The white 
* Of this I have convinced myself by repeated examination, and I can- 
not doubt that B. and S. err when they say “ feuilles. . À bords souvent un 
peu plus grossiérement granulés que cela ne se voit ordinairement, mais 
jamais denticulés comme on les a indiqués.” 
