HOOKERIACEAE. 281 
rarapa, coll. W. Gray, and with Beckett’s No. 930, Otira Gorge, West- 
land, at Kew, labelled D. straminea, pei with presumably smooth 
seta, has the foliation entirely of B. nervo 
B. straminea is, in fact, merely a slic cht colour variation of B. 
nervosa. The — . occurs in the whole range of islands, as well as 
in Lord Auckland’s I 
Distichophyllum Doz. & Molk., M. frond. ined. Arch. Ind., p. 99 
(1846). Mniadelphus C.M. ex parte. 
The species of this genus are phos Sas easy to ails dan while 
rather hard to define; the leaves are more or less complanate, the 
lateral ones usually of rather different gram from those of the dorsal 
and ventral cia generally densely set, often undulate when dry, 
broad and rounded above and obtuse, with or without an apiculus, 
single-nerved, and ‘daily with a very narrow Bete of thin, elon- 
gate, colourless cells. The texture is usua ally very soft when moist. 
The median cells are more or less hexagonal ped generally being 
much smaller towards margin and apex, while becoming very lax and 
elongate in the lower part of the leaf. The iy is short, smooth or 
papillose, sometimes very highly so; the eapsules are small, and owing 
to the short seta and large leaves are often peters picvente 
Key, 
( Leaves unbordered; plant large; leaves ithe se 
qed rounded Bb obtu use above 5. microcarpum . 
Leaves border — obs 2 
Leaves — aie plate or peciar: ate, ox more or 
less denticulate, perichaetial leaves acute ... aie ants 3 
ar very wide above, obtuse or with a ery 
mall apiculus, aoe quite entire; perichae. 
tial leaves See oe side 5 
Leaves wide an d short, aeereté dentioniete. above, 
stoutly apiculat .. 1, rotundifoliunt 
Leaves efi ee what narrowed | "above, 
e when moist, faintly denticulate "above, 
ie cates: with a long, acute, often recurved, 
bo 
4 
Border rather thickened, anuer ile often éube 
rhomboid 
oi 2. crispulum 
4 Border very narrow, upper “cells regularly hex- 
agonal 2. var. adnatum 
Leaves very tone Sere, idarsin: ' genrally re- 
flexed; actin obtuse or gabe with a minute 
apiculus 4. amblyophyllum 
Leaves narrower “above, wi ith ‘a more or 
tinct apiculus; margin not or slightly recurved 3. pulchellum 
oa 
ee ee 
§ I. Discophyllum Mitt. 
1. Distichophyllum rotundifolium (H. f. . ye Broth. in Engler & 
Prantl, Pflanzenfam., Musci, ii, 927 (190 
Syn. Hookeria rotundifolia H. f. & . in Lond. Journ. of Bot., 
iii, 551 (1844). Fl. N.Z. ii, 123; Handb. N.Z. FL, p. 493. 
H. trichophora Col. in Trans. N.Z. Inst., xvii, 259° (1884), 
fide 
ose 
Brotherus, H. smaragdina Col., op. cit. xviii, 
