108 



FERNS I BRITISH AND FOREIGN. 



simple, entire, squamiferous. 6-8 inches long. Veins uniform, 

 reticulated ; areoles large, elongated, trapezoid or hexagonoid. 

 Fertile fronds broad, densely sporangiferous on the under side. 



1. H. crinitum, Fee. Acrostichum crinitum, Sw. Plum. 

 Fil. t. 125 ; Hook, et Grev. Ic. Fil, t. I ; Hook. Fil. 

 E.vot. t. 6. Dictyoglossum crinitum, J. Sni. Cat. 

 Keiu Ferns, 1846. West Indies. 



32. A1STETIUM, Kunze. 



Vernation uniserial ; sarmentum slender, furnished with thin 

 membranous reticulated shining lanceolate scales. Fronds 

 distant, simple, oblong-elliptical, acuminate, 6-20 or more 

 inches long, smooth, membraneous. Veins uniform, reticulated, 



Genus 32. Portion of mature frond, under side. No. 1. 



forming trapezoid or hexagonal transverse elongated areoles. 

 Receptacles undefined, tin sporangia being thinly scattered or 

 collected in small irregular groups over the whole under surface 

 of the frond, or evident on the veins. 



1. A. citrifolium, Splitg. Acrostichium citrifolium, Linn. 

 Plum. Fil. t. 116. Antrophyum citrifolium, Fee. 



