Air ENUMERATION OP CTJLTIVATEI) EEENS. 119 



§ '3. Acrostichx. Vernation fascicmlate. Fronds pinnate, 

 4-8 feet high; pinnce adherent. Vems uniform, reticulaied ; 

 eureolee small suhquadroMgular, or large hexagonoid. 



44. UEITROCALLIS, Fee. 



Vernation fasciculate, decumbent. Fronds pinnate, 3-4 feet 

 high, smootli; sterile pinnae elliptical -lanceolate, acuminate, 

 entire, 8-10 inches long, 2 inches wide, sessile, adherent with 



Genus 44. — Portions of fertile and barren fronds. Ko. 1 . 



the racMs. Veins uniform, reticulated; areoles oblong, hexa- 

 gonoid. Fertile fronds contracted; pinnse linear, acuminate, 

 plane, wholly sporangiferous on the under side; sporangia 

 destitute of indusoid scales. 



1. N". prsestantissima, Fee, Acrost. t 52; Fee, Gen. Fit 

 t. 4 A. Aorostiohum praestantissimum, Bory, Hb. ; 

 Hook. Gatrd. Ferns, t. 68. — ^Dominica and Guadeloupe. 



45. ACEOSTICHUM, Linn, {impart^; J. Sm. 



Vernation fescioulate, erect, caudiciform. Fronds pinnate, 

 smooth, 2-8 feet high ; pinnae entire, broad, the upper densely 

 sporangiferous on their under side. Veins uniforiri, roticu- 



