Hypopterygiumi] 
IV. MUSCI. 
487 
IT. Cathadomnton. — S tem elougate, pinnately branched above. Fruitstalk short. 
Peristome single (outer absent). Leaves intermixed with bristles. 
Leaves ciliate 9. FI. ciliatum. 
III. Lopidiuh. — S tem elongate, pinnately branched above. Fruitstalk short. Capsule 
inclined or cernnous. Peristome double. 
Fruitstalk stout, smooth 10. H. concinnum. 
Fruitstalk slender, rough 11. II. Slruthiopleris. 
1. H. filiculaeforme, Bridel ; — Ft. N. Z. ii. 117. Stems erect, from 
a creeping rhizome, naked below, 1-2 in. high, 3-pinnately radiatingly 
branched like a small fern above, deltoid or broadly ovate in outline ; 
branches numerous. Leaves small, deep green, distichous, spreading, 
obliquely ovate-cordate, acuminate, subserrulate ; nerve vanishing; dorsal 
orbicular, apiculate. Fruitstalk short, f in. long. Capsule ovoid, pendu- 
lous ; operculum beaked, nearly as long as the capsule. Calvptra dimidiate. 
Inflorescence dioecious. — Hyp/ium, Schwsegr. Suppl. t. 281 A. 
Northern and Middle Islands : common on stumps of trees, etc., from the Bay of 
Islands, J. D. II. ; to Otago, Lyall. 
2. H. viridulum. Mitten, mss. — H. rotulatum, FI. 1ST. Z. ii. 118, not 
Hypnurn rotulatum , Hedwig. Stems short, bright green, 2-pinnately 
branched ; branches arranged in a deltoid form. Leaves on the main stem 
broadly ovate, acute, quite entire; nerve vanishing beyond the middle, on the 
branches similar, serrulate ; dorsal suborbicular, apiculate, with the nerve 
continuous or ceasing below the apex ; cells oblong-hexagonal ; perichaetial 
short, ovate, acuminate. Fruitstalk red. Capsule horizontal or pendulous ; 
operculum conical, acuminate. Inflorescence monoecious. 
Northern and Middle Islands: Wellington, Stephenson; Wangaroa and Akaroa, 
Kerr (in Herb. Mitten). — The above is as described by Mitten, who observes that this is 
a soft green moss with more slender branches than H. novce-Zelandice, and leaves with 
larger cells that have acute ends. In appearance it comes nearest II. discolor , but it is 
smaller, with different inflorescence. 
3. H. oceanicum. Mitten, mss. Stems short, i— | in. high, expanding 
into a rounded-triangular green frond, \ in. broad. Leaves on the primary 
branches ovate-oblong, apiculate, slightly serrulate, margined; nerve slender, 
vanishing beyond the middle ; upper cells rounded, lower oval, pellucid ; 
leaves of branchlets more oblong and denticulate ; dorsal leaves small, orbi- 
cular, denticulate ; nerve excurrent ; perichaetial erect, oblorig, subulate- 
acuminate, quite entire, nerveless. Fruitstalk long. Capsule pendulous, 
oblong, rugose at the base ; operculum with a subulate beak as long as the 
capsule. Inflorescence monoecious. — Mitten. 
Kermadec group: Sunday Island, Milne and M'GiUivray. — Very similar to H. viri- 
dulum, but the fruitstalk is much longer and more slender. (Norfolk Island.) 
4. H. novse-Zelandise, C. Muell. in Bot. Zeit. 1851, p. 562. — H. 
Smitkianum, Hook. f. and Wils. FI. N. Z. ii. 118. Stems 1-2 in. high; 
branches arranged in a deltoid form. Leaves pale yellow-green, firm, more 
or less decurved, distichous, orbicular-ovate, apiculate, margin thickened, 
denticulate at the apex, rather concave ; nerve stout, continuous ; dorsal 
orbicular, acuminate, with a stout continuous nerve; perichaetial lanceolate, 
