126 
Salmon. — On the Genus Fissidens . 
F. gracilis, Sch. ms. in Herb. Kew (Trinidad (Kruger)), is F. Kege- 
lianus, C. Mull., Syn. i, p. 49. 
F. Eckloni , Sch. ms. in Herb. Kew (Cape (Ecklon)), is F. Lindigii 
(Hpe.), Paris, recorded hitherto only from Nova Granata. 
F. subcrispus , Besch., Not. Mouss. Parag., p. 260 (M£m. Soc. Sci. 
Nat. Cherb., t. xxi, 1877). 
According to a note on a specimen of the above (Balansa, PI. 
Parag., 1874-77, No. 1202) in the Kew Herbarium, Mitten considers 
this species to be the same as his F. anguste-limbatus. The leaves 
of these two Mosses, if examined before completely revived, look very 
similar in the opaque areolation and very narrow limb, but when the 
cells become fully expanded it is seen that those of F. anguste- 
limbatus are about twice the size of those of F. subcrispus (Figs. 93, 
94), and there can be no doubt that the two species are distinct. 
The leaves of the former are also somewhat rounded at apex, and 
so blunter than in the latter. There is also a difference in 
inflorescence. 
F. Balansaeanus , Besch., var. limosus , Besch., Not. Mouss. Parag., 
p. 261 (Mem. Soc. Sci. Nat. Cherb., t. xxi, 1877), was founded on 
No. 1245, Balansa, PI. Parag., 1874-77. Mitten, on the specimen 
of this in the Kew Herbarium, refers the plant to F. Kegelianus, 
C. Mull., and it agrees well with that species, or rather the ‘var. / 3 ’ 
of it, described by Muller, Syn. 1, p. 49, which differs from the type 
in the less cuspidate leaves, and setae often in pairs. F. Balansaeanus 
appears distinct in the synoicous inflorescence and denticulate leaf- 
apex. 
F. mollis , Mitt. (Muse. Austr.-Amer., p. 600), is not distinct from 
F . macrophyllus, Mitt. (loc. cit.). The specific descriptions of the two 
plants contain no separating characters, but in the key (loc. cit., 
p. 583) the species are thus arranged : F. macrophyllus ‘ folia elongata 
subspathulato-lanceolata ’ ; F. mollis , ‘ folia lineari-elliptica/ In the 
authentic specimens at Kew, however, the leaves are identical in 
shape. It seems, moreover, that Mitten now unites these species, 
as on the type of F. mollis at Kew that author has written 
‘ F. macrophyllus ! 
