342 BRYOLOGY OF NEW ZEALAND. 
tion ; ; they are all nomina nuda. The further citation of the ee 
javanica is no better. The citation is sometimes given of Hypno 
dron (C.M. as Section of Hypnum, Syn. ii, 496) Lindb.; but wile 
irrational to cite Lindberg as establishing it as nus, since that 
author creates four genera out of the species—or rather some of 
them— include ~ ueller in his Section. So far as I ean 
ascertain the firs t diagnosis of Hypnodendron was by Mitten in - 
Flora Vit itiensis, and of Mniodendron by Brotherus in the Pflan 
am., Musci, ii, 1170, and there appears no adequate reason aoe 
citing Lindberg as the ‘author of Hypnodendron, for which C. Mueller 
is virtually, though not technically the sponsor. Mitten in the F 
Vitiensis includes the species of Mniodendron in his Hypnodendron, 
a vie hich, as I have said, seems to me a sound one; Mniodendron 
was separated by Brotherus, in accordance with Lindberg’ Ss view 
later. As, however, the two genera have been maintained “by most 
of the important works dealing with this Group, I have retained 
them here for the present. 
KEY. 
Leaves glossy; cells all elongate, more or less 
pellucida, marpinal simtlar 29a <s ce 1. arcuatum 
Leaves not glossy; inner pone short, a 
hexagonal, obscure. marginal in veral 
rows oe: incrassate, forming a distinet 
POET ee i ee ee sie 2. marginatum 
1. Hypnodendron arcuatum BS geo: Mitt. in Trans. & Proce. Roy. 
Soc. Vict., xix, 90 (1883). 
Syn. Hypnum arcuatum Hedw. Sp. Muse., p. _ t. are 
(1801). Hypnum spininervium Hook., Mus . Exot., 
29 (1818). Hypnodendron spininervium rae. Adunbr 
ii, 623. Isothectum spininervium H. f. & W., FI. 
ii, 105; Handb. N.Z. FL, p. 466. H ypnodendron pees 
frons C.M. in Hedwig. ee 170. 
This species is known by its secondary stems devoid of tomentum, 
3-6 em. high, the large, pikes broadly ovate leaves, sharply toothed 
rom near base, the firm, terete nerve with a few strong spinose 
teeth at back below apex, and often running out into a longly 
crowded into a dense, short, pinnate sp fabellate frond, but are some- 
times so closely set as to be almost whorled or umbellate : a! are 
more or less complanate, and nearly always glossy when 
vary much in theths and the frond may be from 2 to 4 a cross. 
The seta is about 2 em. long, and oaity slightly curved or feces, 
about 2-4 from each stem; capsules slightly curved when ripe, deeply 
furrowed, about 4-5 mm. long (deoperculate) ; the lid varies much 
in len neth. 
H. planifrons C.M. is from the description certainly nothing 
but a ters ascs robust Pare no other characters are suggested. 
a common 
