16 BRYOLOGY OF NEW ZEALAND. 
D. robustum appears to be less variable than some of the allied plants, 
though subject to some considerable degree of variation in point of size 
In habit several other species resemble it, “and this has given rise to frequent 
errors of identification. Thus “ D. robustum, N.Z., leg. Colenso,”’ in Herb. 
Mitten., belongs to D. cylindropyzxis, while others of the larger and hiherts 
scarcely recognized species no doubt figure in herbaria as D. robustum. 
In all probability D. robustum is by no means a common New Zealand 
Peers 
t may, puch ghae be ies cant by the following characters: the robust 
habit the bro erve of Toxoneuron type only finely denticulate at back 
above, and the call ibe narrow and elongate in the subula, will separate 
it from all but D. setosum, D. grossialare, and D. chrys odrepaneum. The 
last two have a distinct hyaline border to the lamina, which D. robustum 
usually at least lacks, while D. scaly Maasai has much shorter upper 
cells, especially the marginal row; D. grossialare has the upper cells 
elongate, but they are less incrassate, less porose, and more distinct, while 
the pen are more crowded and more finely setaceous, and the seta very 
much 2 
6. 7 Sabaeai Sse (H. f. & W.) Par., Ind., ed. ii, p. 30 (1904). 
[Plate I, fig. 2.] 
Syn. Dicranum setosum H. f. & W. in Lond. Journ. of Bot., 1844, 
p. 541, et Fl. Antarct., i, 129, t.158. Leucoloma setosum Broth. in 
Engler and Prantl, Musci, p- 323 (1901). Dicranum subpungens 
Hampe in Linn., 1859, p. 629. Dicranoloma oes Par., op. 
cit., p. 30. Leucoloma subpungens pales op. cit., p. 323. Dicra- 
num calymperidium Bailey, Synop Pe ienaie Flora, 1884 
(fide Watts and White aac Gases oes Australens., p. 48). 
D. calymperaceum C. M. in Hedw., 1897, p. 357. Dicranoloma 
calymperaceum Par., op. i Pp. 25. Le ucoloma ag aed aga 
roth., op. cit., p. 323. Dicranum subsetosum C. M. in Hedw., 
1897, p. 353. Dicranoloma os um Par., op. cit, p- 25. 
Leucoloma subsetosum Broth., cit., p. 323. 
Distributed throughout the rece region. 
have found D. setosum a very ik subject, owing to the 
amen’ displayed, together with ted ack = accurate distinguishing 
Tigi 
Ponnoen and figures of D. setoswm, D. pungens, and D. robustum gives 
ittle aid as to the separating characters of each, and since Hookers 
herbarium senor numerous specimens under each species, and no one 
or more are cited as types, it is far from easy to be certain as to the exact 
conception which the authors had as to their species. This is particularly 
‘the case as between D. setoswm and D. robustum. That the difficulty is 
neither an imaginary nor a new one is clear from a study of the notes and 
. Brown’s “Notes on the Genus Dicranwm”’ (Trans. N.Z. Inst., vol. 29, 
p. 451, 1897), gg following no doubt the former work, he separates 
D. setos ost of the allied species as having the perichaetium 
short. This, s however, is not borne out by the specimens in the Hookerian 
