CHARACTERS OF TRIBES AND GENERA. 141 
(Acrost., t.27) ; L. heteromorpha, J. Sm. (Lomaria filiformis, 
A. Cunn., Hook. Sp. Fil. 3, t. 149; L. pimpinelleefolia Hook. fil. 
in Hook. Lond. Journ. of Bot. 3, p. 412). 
Oss.—This last is a native of New Zealand, and very 
variable in the form of its fronds; in what may be termed 
the perfect state, the pinnæ are lanceolate, and 2 to 3 inches 
in length, whereas in the variety termed pimpinellefolia 
they are numerous, small, and nearly round, not exceeding 
a quarter of an inch in diameter. 
With regard to L. leptocarpa, it is peculiar in having a 
thickened base to the stipes, analogous in appearance to 
the articulate node that characterises the division Eremo- 
brya. Fée describes it as “frondibus articulatis.” My 
own observation, however, is that it is not jointed with 
the sarmentum. 
56.—AnrHROBOTRYA. J. Sm. 
Polybotrya, J. Sm., 1841; Acrostichum sp., Hook. Sp. Fil. 
Vernation uniserial, sarmentose. Fronds distant, bipinnate, 
3 to 4 feet high, pinnæ alternate, 6 to 8 inches long, patent, 
articulate with the rachis; sterile pinnules contiguous, 
twenty to thirty pairs, obliquely oblong, 4 inch in length, 
short petiolate and articulate with the rachis, which is sub- 
alate. Veins forked, free. Fertile pinnules linear falcate, 
smaller than the sterile, the under disk wholly sporangi- 
ferous. 
| Type. Polybotrya grticulata, J. Sm. 
Illust. Fée's Acrost., p. 74, t. 37. 
Oss.—The Fern bearing the above character being so 
. different in general habit from true Polybotrya, I am induced 
to separate it as a distinct genus. The articulate pinnæ 
 bipinnate fronds from Lomariopsis. 
and pinnules distinguishes it from Polybotrya, and the e CH 
