DICRANACEAE. 95 
s actual plant. It very nearly resembles D. Billardieri, 
a slight difference in the upper cells, which are shorter and wider, thin- 
incti n find. Mi 
the upper bracts of which in D. angustinerve are described as ° 
acumen breve setiforme angustatis,” to which Mitten adds “the internal 
perichaetial leaves are also furnished with a bristle-like point, which seems 
wanting in D. Billardieri.”"** The perichaetia in D. Billardiert have certainly, 
usually and normally, the innermost perichaetial bract obtuse and quite 
muticous, the outer ones with very short points as compared with those 
of most of the New Zealand species of the genus. But it is very doubtful 
non-development. Moreover, : 
““Musci Austro-Americani,” has of these bracts, “ apicibus muticis retusis 
I have 00 
New Zealand, leg. P. Yates, 1894,” sent me by Rev. C. H. Binstead, and 
probably communicated by T. W. N. Beckett. I scarcely know the value 
of the variety, nor can I say whether the specimen 1s accurately named. 
The characters scarcely seem to warrant its varietal rank. The seta, 
which is described for var. duriusculum as longer than in the type, is 
* R. Brown, in his “Notes on the Genus Dicranum” (Trans. N.Z. Inst., vol. 29, 
p. 461, 1897), writes that the perichaetial leaves of D. Billardiert end a short 
toothed hair-point. I do not know if this was from his own observation or deduced 
from descriptions and the analogy of other species; it would seem ably the 
former, as he figures the innermost bract with a short mucro, or cuspidate point. 
