CHAlUCTIiES Of TRIBES AND GENERA. 127 



tf Vernation fasciculate, decunihenl. 

 E. conforme {Sw.') (v v.) ; E. caltefolium {Bl.) (v v.) ; 

 E. Sieberi {Hook, and Orev.) (v v.) ; E. crassinerve {Kze.) 

 (v v.); E. latifolium (S-w.) (v v) ; E. L'Herminieri (Bory) 

 (v V.) ; E. microlepis (Kz''.) (v v.) 



** Fronds more or less densely squamiferous. 

 E. piloselloides {Fr.) (v v.) ; E. rubiginosum (Fee) (v v.) ; 

 E. cnspidatum {Willd.) (v v) ; E. mnscosum (Sw.) (v v.) ; 

 E. squamosum (Sw.) (v v.) ; E. vestitum (Hoolc. and Grev.) 

 (vv.) 



*** Fronds fringed or squaraiferous at the margin only. 

 E. apodam (Hook, and Orev.) (v v.) ; E. undulatum 

 (Willd.) (v V.) ; E. scolopendrifolium (liadd.) (v v.) 



41. — AcoNioi'TEras, Presl (1836). 

 Acrostichum sp. ; Hook. Sp. Fil. 



Vernation nniserial ; sarmentum short, thick, sqnamose. 

 Fronds contiguous, elliptical, or linear lanceolate, C to 12 

 inches long, smooth or squamiferous. Veins simple or 

 forked, parallel, their apices combined near the margin 

 by a straight or zigzag vein. Fertile frond linear, plain, 

 wholly sporangiferous on the under side. 



Type. Acrostichum nervosum, Bory. 



Ulust. Hook, and Bauer, Gen. Fil., t. 70, B; J. Sm. 

 Ferns, Brit, and For., tig. 30; Hook. Syn. Fil., t. 7, 

 fig. GO, p q. 



Obs. — This as a genus was founded by Piesl on Acros- 

 tichum nervosmn of Bory, a native of St. Helena, to which 

 has been added Acrostichum longifolium of Jacquin and 

 A. gorgoneum of Kaulfuss, natives of the West Indies and 

 Sandwich Islands. In habit they are allied to Elapho- 



