HYPNACEAE. gue 
Key. 
Leaves grey, very glossy, not ages cao usually 
1 strongly falcate or secund; dioicous .... _..... 1. limatum 
Leaves green or whitis more or ee com- 
planate, not very glossy; BULOIECOUS =e - es . ah aes scabs 2 
Leaves minute, less than 1 mm., dull green, 
3 Sn Seen ene aT aS Cee ment es ame vera ae Sa 2. pulchellum 
Leaves large 1-15 mm., pale peadeppes ire 
( entire or faintly denticulate at apex... —...... 3. molliculum 
1. Isopterygium limatum (H. f. & W.) Broth. in Engl. & Prantl, 
Pflanzenfam., Musci, ii, 1080 (1908). 
ee Hypnum limatum H. f. & W., 5 Antaret., Suppl., 
li, 345 (1847); Handb. AES EL, She HH terrae- 
novae var. australe H. at., 1, 142, 
australe C.M. Syn. ii, 302 (iést). SR oivobeNieum 
australe Jaeg. Anais: li, 524. 
A very s striking and pretty moss, quite distinct in habit from 
any other species of Isopterygium, but agreeing in essential 
characters. It forms exceedingly dense, yellowish or greyish tufts, 
with very highly glossy leaves, which ma y be ‘slightly scan only, 
ut are usually very stron ely curv oe o in Rhaphidostegium or 
Stereodon, but with more rigid, shorter, less filiform subula; they 
also recall dente forms of Brachy ythecium paradoxum, and like that 
ave the — somewhat plicate when dry—the absence of nerve of 
- course at once distinguishes them. They are oblong-lanceolate, 
tapering aliioat es base, ee pte te abe to a short, but ver 
acumen, and are qu uite e 
The plant is aiglebua, ae sete about 1.25—1.5 em. long, the 
peviclisetiid leaves erect, strict, ending in a straight filiform point. 
Capsule almost erect, subeylindrie; lid henge highly conical, obtuse. 
It appears to be rare, but I have it from some half a dozen 
different New Zealand joeelities: it ous “a described from Camp- 
bells Island, and it occurs i n Tasmani ia and Victoria 
[Hypnum (Drepano- aati) sublimatum Hampe MS. in Herb. 
‘“ New Zealand, misit Schimper, No. 302,’’ in Herb. Mus. Brit., is 
i . ££ & W. 
be E. Moritzit (C.M.) or E. tutwilum (Sull.). I think there can be 
no doubt that the supposed New Zealand origin is incorrect. ] 
2. Isopterygium pulchellum (Dicks.) Jaeg. Adumbr., ii, 507. 
yn. Hypnum pulchellum ists Pl. crypt. fase. ii, p. 13 
(1790) ; Handb. N.Z. F1., p. 476. 
A very delicate plant, not unlike a oe of the preceding 
species, but softer, greener, with much smaller, narrower, very 
finely acuminate, almost subulate leaves. The fruit is very similar, 
but much smaller, though the seta is not much shorter; the capsule 
is more inclined and the lid more acute. : 
*For the synonymy of this species cf. Journ. Bot. 1921, p. 135. 
