452 MR. E. 8. SALMON ON 
no. 274) (C. Ford, 1888, 1889, 1890, nos. 16, 157, 159, 160, 202, 
208, 205, 212, 273, 276, 277). 
Wilson (3. p. 273), who examined Dr. Alexander's specimens, 
remarked as follows :—“ Didymodon proscriptus, Hornsch. (?) var. 
seta duplo vel triplo longiore. In habit this moss is a Trichosto- 
mum, but the peristome is that of Dicranum. Itis closely allied to 
D. longirostris." On the same specimens, and on those collected 
by Wilford, Mitten has written “ Cynodontium costatum, M.,” 
but this name has not been published. "The excellent specimens 
which have been sent subsequently by Ford, show clearly that 
the species is very variable in many characters, especially in the 
degree of robustness of the stems and in the size and shape of 
the eapsules. In some examples (Ford, nos. 16, 159) the stems 
are very short, often under 5 mill. high, with a short ovate or 
globose-ovate capsule, often more or less gibbous, wide or almost 
truncate at the mouth, on a short seta; the whole plant barely 
2 eent.high. In these small states, with the small inclined wide- 
mouthed capsule, D. obscura much recalls in general appearanee 
D. heteromalla, but may be at once distinguished by the narrow 
incrassate cells at the shoulders of the more sheathing base of 
the leaves, the wide annulus, and spores of nearly twice the size. 
In other specimens (nos. 157, 160, 202, 203) the stems reach to 
3 cent. in height, and the whole plant to 5 cent. or more, 
and the capsule becomes sub-cylindric and often symmetrical, 
with a narrower mouth. 
Iam indebted to Mr. Mitten and Prof. W. G. Farlow for 
kindly sending me authentic specimens (now in the Kew. Herb.) 
of D. obscura, which enabled meto establish the identity of the 
plants in the Kew Herbarium. 
DICRANUM CRISPOFALCATUM, Schimp. MSS., Besch.— China: 
Mount Omei, Szechuen, barren (Dr. E. Faber, no. 1109). 
D. rogrronruM, Mitt.—China : Tientai Mt., 2000 ft., Prov. 
Chekiang, c. fr. (Dr. E. Faber, 1889, no. 6). 
Through some mistake this species is described in Journ. Linn. 
Soc., Bot. iii. (1859) Supp. p. 15, as having the cells of the leaf 
“haud interruptis " ; in all the specimens examined, however, 
iucluding the type, the cella are porous from the base to the 
apex of the leaf. 
D. JAPONICUM, Mitt., var. YUNNANENSE, var. nov., foliis et 
foliorum cellulis latioribus, (capsula majore (5 mill longa) ` 
erectiore haud arcuata.—-China: Hupeh, Kuei, on rock, c. fr. 
