CHARACTERS OF TIIIBES AND GENERA. 263 



lUust. Hook, and Bauer, Gen. Fil., t. 15 ; Hook., Gard. 

 Ferns, t. 31; Moore, lud. Fil., p. 88 A ; J. Sm., 

 Ferns, Brit, and For., fig. 122 ; Hook., Syn. Fil., t. 2, 



%■ 15. 



Obs. — This genus consists of a solitary species, a native 

 of New Zealand, which in habit is similar to some species 

 of DavalUa as originally characterised, but more especially 

 to the species placed under Microlepia ; but differs in its 

 sporangia being imbricate, round a columnar receptacle, 

 similar to the genus Triclwmanes. This, with the ob- 

 liquity of the ring, renders Loxsoma of some importance 

 as a connecting link between the present tribe and 

 Trichomanes. 



Sp. L. Cunninghami, B. Br. [v v.), Comp. Bot. Mag. 2, 

 366, t. 31—32. 



115. — Odontosokia, Presl (1836.) 

 DavalUa, sp. auct. ,• Hooh. Sp. Fil. ; Stenoloina, Fee. 



Vernation sarmentose, contiguous, sub-fasciculate, or 

 distant. Fronds bi-tripinnatifid, lanceolate or deltoid, 

 1 to 2 and 3 feet in length, or indefinite ; ultimate seg-. 

 ments cuneiform, entire, lobed or laciniated. Veins 

 dichotomously forked, venules free. Meceptadcs terminal, 

 punctiform. Sari simple or binate. Special and aiyyssorij 

 inrhisia forming a vertical, urccolate, or, by confluence, 

 oblong, sporangiferous, marginal cyst. 



Type. DavalUa tenuiJoUa, Sw. 



Illust. Hook, and Grev. Ic. Fil., t. 238 and 194 ; J. Sm., 

 Ferns, Brit, and For., fig. 120. 



Obs. — This genus consists of about a dozen species, 

 widely distributed throughout the tropics of both hemi- 

 spheres. They form two distinct groups, the first having 



