64 FILICES. 



3. Antrophtum pumilum, Kaulf. 



Antrophyum pumilum, Kaulf. Enum. Fil. p. 197. 

 Hemionitis immersa, Bory, ex Willd. Spec. PI. 5, p. 127. 



Hab. Mangsi Islands : forming dense patches on trunks of trees. 



None of the fronds of this well-marked species are over li inches 

 in length : they are oblong, obtuse, and attenuated at the base, which, 

 as well as the costa and occasionally the margin of the fronds, is fur- 

 nished with scattered, slender, reticulated, spinulose, brown scales. 

 Sori interrupted, with immersed sporangia. 



4. Antrophtum plantagineum, Kaulf. 



Antrophyum plantagineum, Kaulf. Enum. Fil. p. 197 ; Blume, Enum. Plant. Jay. 

 p. 109; Hook. & Am. Bot. Beech. Voy. p. 74; Hook. Gen. Fil. t. 109, A. 



Hab. Tahiti, Society Islands : on rocks and trunks of trees. 



Fronds oblong-lanceolate, attenuating on a stipes of 3 to 5 inches in 

 length. 



To this species is nearly related the Antropfiyum Boryanum, 

 Spreng., as figured in Hooker and Greville's Icones Filicum ; and we 

 are not satisfied that the one is anything more than a slight variety 

 of the other. In A. Boryanum the fronds are described as "oblongo- 

 ellipticis obovatisve acutis," with the areoles formed by the veins 

 not quite so much elongated as in our specimens of the A. plantar 

 gineum; but in the latter respect, as well as in the outline of the 

 fronds, both are liable to considerable variation. 



* * Costata, 



5. Antrophtum alatum, Sp. Nov. 



A. frondibus subcoriaceis costatis lanceolato-oblongis acuminatis bad 

 angusta in stipitem brevem atte?iuatis ; soris vUlosis i?nmersis. 



