HYPNODENDRACEAE. 345 
mediate in thickness segue M. comosum and M. comatum, and a 
bi-stratose margin. This may be C. Mueller’s H. Sieberi, but in any 
I incline we ee it Hy a marked form or variety 0 
comosum n an ave seen no New Zealand plants that 
i vent I ha 
gree at all with i claaphin of M. Sieberi, and I have omitted it 
fous the list. 
I have seen no Australian plants of M. comatum, which appears 
to be by far the most common New Zealand species, and occurs in 
Tasmania; M. comosum, however, is found in New Zealand, Tasmania, 
and Australia, as well as in the Auckland Is. and Campbell 1. 
1. Mniodendron comosum (La Bill.) eas e Broth. in Engl. & 
Prantl, Pflanzenfam., Musci, ii, 1172 
Syn. Hypnum comosum La Bill., Pl. Nov. Holl. ii, 107 (1804- 
06). Isothecium comosum Brid. , Bry. univ. ii, 374; FL 
Bik: Handb. N.Z. FI, p. 466. ’ Hypnum 
Kroneanum C. M. e Geheeb in Rev. Bryol. 1877, p. 53. 
Known by its robust habit, often reddish colour, stout, straight, 
not tapering, recurved nor pendulous branches bu more or Tess 
erect, the very stout nerve, and the leaf border more or less ineras- 
sate. Biter setae may be two or three together, but are not, I believe, 
ever numerous, — are oo constantly longer than in the short- 
‘ete form of M. 
e Auckland Ie Blane (Hypnim Kroneanum C.M.), cannot be 
eepacaed the alar cells are in no way distinet from those of New 
ealand and Australian plant 
The species appears to Be rare, but is widely distributed. 
2. Mniodendron comatum (C.M.) Lindb. e Rroth. op. et loc. cit. 
Syn. Hypnum comatum C.M. Syn. i, we aaa A Tsothe- 
ndb. N.Z. FL, p. 467. 
(1887). Mniodendron  brevisetum "Reiehh., Novara 
Exped., Botany, p. 189 (1870). 
A very beautiful, while common and very variable plant, as 
mentione d in the notes under the genus; the leat structure, however 
mue 
and length of the setae is a very unusual feature. In the common 
form the setae are very numerous and short, so that the capsules 
Sa crowded together. The branches are saa less robust than 
n M. comosum, frequently Psa eurved, and tapering; eh nerve 
is much narrower, and the leaf margin constantly unistratos 
It is frequent in New Zealand, and extends to Tasmania, — not 
beyond. 
‘ eset tomentosum Col., from the description certainly 
longs 
teesctsheel has given a very detailed and useful description, with 
i of his M. brevisetum; but his species is based almost entirely 
the numerous short setae, which are really characteristic of the 
