CHARACTERS OP TRIBES AND flBNEEA. 141 



(Acrost., t. 27) ; L. heteromorplia, /. ■S'm. {Lomaria filiformis, 

 A. Gunn., Hook. Sj}. Fil. 3, 1. 149; L. pimpinellcefolia Hook.fil. 

 i}iIIooJc. Lond. Joiirii. of Bot. 3, p. 412). 



Obs. — Ttis 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 pinnas are lanceolate, and 2 to 3 inches 

 in length, whereas in the variety termed pimpinellcefolia 

 they are numerous, small, and nearly round, not exceeding 

 a quarter of an inch in diameter. 



With reg-ard to L. leptricarpa, it is peculiar in having a 

 thickened base to the stij)es, analogous in appearance to 

 the articulate node that characterises the division Eremo- 

 brya. Fee describes it as " frondibus articulatis." My 

 own observation, however, is that it is not jointed with 

 the sarmentnm. 



56. — Artheobotrta. /. Sin. 

 Polyhotrya, J. Sm., 1841 ; AcrosHchum sp., Hook. Sp. Fil. 



Vernatio'ii nniserial, sarmentose. Fronds distant, bipinnate, 

 3 to 4 feet high, pinnae alternate, 6 to 8 inches long, patent, 

 articulate with the rachis ; sterile pinnules contiguous, 

 twenty to thirty pairs, obliquely oblong, ^ inch in length, 

 short petiolate and articulate with the rachis, which is sub- 

 alate. Veins forked, free. Fertile pinnvJes linear falcate, 

 smaller than the sterile, the under disk wholly sporangi - 

 ferons. 



Type. Polyhotrya articulata, J. Sm. 



lUust. Fee's Acrost,, p. 74, t. 37. 



Obs. — The Fern bearing the above character being so 

 different in general habit from true Polyhotrya, I am induced 

 to separate it as a distinct genus. The articulate pinnae 

 and pinnules distinguishes it from Polyhotrya, and the 

 bipinnate fronds from Lomariopsis. 



