DICRANACEAE, 27 
what more tubular, ihe twisted subula, and the shades entire leaves. 
Nerve, cells, and fruiting characters show no departure whatever. When 
one compares the sar -known variation of such a plant as Dicranum sco- 
parvum it is obvious that the above characters might very well not mark 
anything more than a varietal departure from the type. At the same time, 
a cements forms rarely seem to be recorded, and, though I have some 
evidence that they occur, it needs palaoe to be strengthened before uniting 
ungentella with D. Billardieri. Moreover, D. Pungentella does not 
appear to be a commonly distributed plant, and at Manrios¥ ile it grows 
actually intermixed with a quite ordinary form of D. Billardieri, each keep- 
ing their characters—such as they are—quite distinct, so that, whatever 
its value, it is by no means only a local or temporary state conditioned by 
the environment. 
A careful examination of Dicranum Weymouthi C. M. (Tasmania, 1889, 
leg. W. A. Weymouth), sent me by Dr. Brotherus, reveals no characters that 
can separate it from D. Pungentella. There is nothing in the description 
to indicate any difference, and the only possible distinguishing mark to be 
found consists in the leaf-apex, which is at times somewhat more strongly 
toothed than I have seen it in ungentella. The leaves, however, range 
from this form to quite entire , and the larger proportion of them are abso- 
lutely indistinguishable from those of D. Pungentella. It is simply a form 
with leaf-apex frequently more markedly denticulate. As such it isle 
somewhat the specific value of D. Pungentella as distinct from D. Bi z 
In actual place of publication D. Weymouthi, bemg described on e 354, 
and D. Pungentella on p. 355, has the technical priority. But as D. Wey- 
moutht has not been cited, so far as I am aware, in subsequent literature 
(except in ooeDeny with D. Pungentella), while D. Pungentella has been 
described and red under that name (as Lewcoloma), as cited above, I 
have thought . best to retain the latter name. 
16. Dicranoloma eae (Broth. & Geh.) Par., Ind., ed. ii, p. 27 
(1904). [Plate IV, fig. 15.] 
Syn. Dicranum integerrimum Broth. fd oe in Oefv. af Finsken 
Vet. Soc. Forh. 1895, p. 152. loma integerrimum Broth. 
in Engler and Prantl, Musci, p. 395 (i! (1901). 
Distribution —Tasmania ; New Zealand—Stewart Island, October, 1908, 
leg. et comm. Cockayne. 
As the figures will show, D. integerrimum is a much more robust, far 
more densely foliate plant than D. Pungentella, with the leaves terminating 
in a fine, rigid, almost always entire i with long, extremely narrow 
ih Es cells. At the same time, an intermediate plant occurs in D. Bur- 
are entire or at most with a few denticulations at ‘the extreme apex. 
leaves of D. Burchardi are, however, sometimes quite entire ; still, as are 
al o less finely subulate, and have the upper cells shorter ‘and somewhat 
wider—in D. integerrimum they are markedly long, narrow, and straight. 
Ido not t venture, therefore, to unite them ; bas it may be pointed out that 
D rdi forms the completing link in a series of parallel forms which 
I suggest may ultimately have to be reunited under D. Billardieri. 
species has (among others) two fairly marked forms in respect of robustness = = 
