Capsule cemuous, strumous, grooved when dry; annulus 0; teeth 16, in
one row, subulate, transversely barred, 2-fid at the apex, rough externally.
Operculum long-beaked. Calyptra inflated, cucullate, long-beaked.
A considerable tropical genus, rare in temperate regions, remarkable for its white colour^
and the spongy texture of. the leaves, which are formed of two layers of cells.
1. la. candidum, Hampe; — Fl, N. Z, ii. 64. Stems erect, tufted, ^-
2 in. high, stout, brittle, dichotomously branched. Leaves densely imbri-
cated, erect or falcate and recurved, ovate-lanceolate, concave, wrinkled at
the back near the apex. Fruitstalks on short lateral branches. Capsule
cemuous, strumose, grooved. Male inflorescence axillary, clustered, on sepa-^
rate stems. — IHcranumj Bridel. L, brachyphyllum, Honisch., C. Muell. in
Bot. Zeit. 1851, 546.
Common throughout the islands, on decayed trunks, etc., seldom fruiting. (Tasmania,
Australia.)

11. DIOBANUM, Hedwig.
Tufted, erect, green, perennial, monoecious or dioecious mosses, often large,

2 n



410 IT. Musci. [DierauuM.
of various habit. Fruitstalks terminal, slender, sometimes 2-3 togetlier.
Capsule inclined or cernuous, often struroose, rather long ; teeth 16, subu-
late, joined at the base, transversely barred, 2-fid (often unequally) to the
middle, n\Td\y 3-fid, when dry spreading at the base and then curling upwards.
Operculum with a long oblique beak. Calyptra cucullate.
One of the larfrest ^uera of Mosses, very abundant in all regions of the globe, bat espe-
cially the temperate and cold.
I. Leucoloma. Fruitstalk on a very short lateral shoot. Margin

of leaf white, composed of long slender flexnous cells.
Upper cauline leaves piliferous 1. /). Sieberianum,

Cauline leaves all acuminate 2. 2>. ineanum.
II. Tridontium. Teeth usually 3-fid. Leaves oblong-lanceolate,

obtuse ' 3. i). Tasmanicvm.
III. DiCRANiiM. Margin of leaf not pellucid. Teeth 2-fid
(rarely 8-fid).
* I^eaves with broad-subqnadrate sheathing bases.
