445 МВ. Н. N. DIXON ON SOME 
varying degrees of regularity, and curiously not by any means always in the 
same direction even on the branches of the same plant, but always showing 
the character with more or less marked distinctness. Apart from this spiral 
twisting round the stem, the leaves are as a rule but little incurved or twisted 
on their own axis, though where the spiral arrangement is not well marked 
they are often more flexuose and occasionally have the points considerably 
incurved, 
In Macromitrinm retusum, on the other hand, there is no spiral enrolment 
of the leaves upon the stem, but they are more or less twisted upon their own 
axis, and always with the apew strongly incurved or involute. This sometimes, 
when the leaves are not uniformly twisted on themselves, gives a somewhat 
irregular appearance to the stem, as the incurved points turn in various 
directions ; but when, ах happened to be the case in Mr. Murray’s plant, the 
lower part of the leaves was scarcely twisted, the enrolled apices are all 
directed inwards, giving a terete outline to the stem, which in that case 
shows a prettily spiral arrangement, due, however, entirely to the spiral 
disposition of the leaves on the stem, not in any sense to а spiral twisting. 
In both cases, as well as in M. eaducipilum, the stem or branch is crowned 
by the penicillate tuft of erect nerve-aristas, which persist on the youngest 
leaves, while they are almost entirely lost on the lower ones, and by which 
these species are at once known from their allies. 
It is a curious coincidence that two New Zealand species showing the 
same remarkable structure of nerve and in other ways closely allied, and yet 
really distinct, should have been independently described and so nearly at 
the same time. Mr. Murray’s two plants, it should be noted, had been placed 
together on account of their similarity, but were not necessarily collected at 
the same time. 
BRYACEA, 
MNIOBRYUM TAsMANICUM, Broth. Mt. Cook district (Murray, No. 118): 
det. Broth. In very small quantity, but a beautiful little form of this moss, 
the whole plant being of a bright rosy red. It is new to New Zealand, 
having, I believe, опу been recorded hitherto from its original station on 
Mt. Wellington, Tasmania, where it was collected by Weymouth. 
BRYUM AUSTRO - PALLESCENS, Broth. Mt. Cook district (Murray, 
No. 102), сїт. 
D. CHRYSONEURON, C. Muell. Waitakarei Hills (Murray, No. 45), c.fr. 
В. rEviGaTUM, Hook. f. & Wils. Mauriceville, Wairarapa, North I. 
(Gray, No. 18), efr. 
3. BLANDUM, Hook. f. & Wils. Waitakarei Hills (Murray, No. 36). 
