270 BRYOLOGY OF NEW ZEALAND. 
more slender (in the pang form) than the following two, and is 
more closely branched than 7. pandum. The chareclers given in the 
Key will I think always separate it teu that specie 
Var. elongatum Dixon in Bull. Torr. Bot. Club, xlii, 106 (1915). 
In addition to the locality given for this very striking var. in 
the work cited, I have received a specimen from Mitten’s, herbarium, 
labelled iatkbciun. pandum H. f. & W., New Zealand, Kirk,’’ which 
tia te eg to this variety, and not to 7. pandum. In habit it 
much resembles 7. pandum, but is more flexuose, with markedly com- 
ats ce whieh agree in structure and form with 7’. latifolium. 
The cells in the present species are nearly always more regular 
in form than in 7. pandum, and are also usually more regularly 
arranged in longitudinal rows (best seen near ma argin in upper part 
of leaf, and most easily observed when the leaf is slightly out of 
focus). 
The distribution of T. latifolium is a very unusual one—Sumatra, 
Japan (fide Kindberg), New Caledonia, and New Zealand. I have 
it from numerous localities in the North I., but it is, I believe, not 
known from the South I. 
Kindberg in Hedwig. xli, 219, cites Thamnium ar gd Sage as 
synonym of 7. latifolium. T. australe, however a MS 
Hine of Lindberg’s, and should not be cited i in the sy oe wana 
3. Thamnium pandum (H. f. & W.) Jaeg. Adumbr. ii, 216. 
Syn. Isothecitum pandum H. f. & W., Fl. N.Z. ii, 105 (1855) ; 
Handb. N.Z. F1., p. 464. 
No doubt the most frequent species, and often if not usually 
aquatic or at least hygrophytic. It is frequently found in the spray 
of waterfalls. It is more rigid than the preceding plants, with elon- 
gate, sparingly branched, curved stems, the leaves not markedly 
complanate, rather coriaceous, oblong from a broader base with one 
margin widely inflexed; and usually m r less plicate when dry. 
I have seen no fruit of any of fae Sh se spenlens but T. pandum is 
not uncommonly found in frui 
The general habit is a unlike that of Echinodium hispidum, but 
the resemblance ends the 
Thamnium baculiferum Dixon in Bull. Torr. Bot. Club, xlii, 104 
(1915). 
This striking species has not at present been refound. It should 
be searched for in the North I. The robust habit, large, complanate, 
rigid leaves, deeply plicate when dry, attenuated ne rve, an me- 
what elongate apical eells (2 & 1) will distinguish it at once, even 
should the straight, terete, aps shoots from which it is named 
not prove to be a constant f 
Only known habitat, ua Hawkes Bay; coll. Chadwick. 
