79 



Pooonatum. Calyptra hairy, capsule terete. Lid with long beak. 

 5. P. alpinum, Linn. Leaves spreading and recurved, long 

 linear lanceolate, sheathing at the base, margin 

 incurved, sharply serrate, spinulose at the back, 

 lamellar. Capsule erect or inclined, ovoid or oblong, 

 furnished with a short swollen neck. Lid with a long 

 beak. Calyptra with red-brown hairs, teeth short, 

 sub-irregular. Western Mountains. 



6. P. tortile, Swaetz. Stems simple, l-2in. high, leaves 



loosely spreading, incurved when dry, sheathing at the 

 base, thence linear-lanceolate, flat, serrate. Fruitstalk 

 lin. high. Capsule sub-erect, nearly terete, obscurely 

 six-lined ; lid convex, with a short beak. Calyptra 

 clothed with matted hairs. P. suhulatum, Menz. 

 Hook. Handbook N.Z. PI. Mt. Wellington. 



7. P. Gulliueri, Hampe. No description available. 



Polytrichum, capsule angular, furnished with discoid apophysis. Lid 



shortly beaked. Calyptra hairy. Teeth Si. Columella alate. 



Leaves serrate. 



8. P. commune, Linn. Long steins. Leaves sheathing at 



the base, spreading, recurved, long linear-lanceolate, 

 serrate, lamellate ; perichsetial, sheathing, membra- 

 neous, erect. Capsule 4-angled. Lid with short beak. 

 Var. B. Stems short, slender. Bogs, Brown's River. 

 Bogs near Huon. 



Leaves entire. 

 P. juniperinum, Hedwo. Leaves spreading, recurved, 

 sheathing at the base, linear-lanceolate, 

 margin inflexed, quite entire. Capsule 



9. 



aristate, 

 4-angled, 

 horizontal ; lid beaked. Summit of Mt. Wellington. 



48. DAWSONIA, Beown. 

 Named in honour of Dawson Turner. Large, handsome 

 mosses, rigid, dark green. Key, No. 41. In forests and on 

 roots of trees. 



1. D. superba, Grev. Stems very long. Leaves with 

 ovate sheathing base, linear, very long, rigid, spinu- 

 lose-serrate. Fruitstalk short, thick. Capsule par- 

 tially hidden by the leaves ; peristome of numerous 

 cilia, like a brush ; calyptra small, covered with hairs. 

 Emu Bay. 



LEUCODON, Beidel. 

 genus (A6KKOS, white, oSovs, 



49. 

 The name of the genus (aeukos, white, oSoAs, tooth) is not 

 strictly applicable, the peristome usually being pale yellow. 

 Key, No. 61. On rocks and trees. 



