AN ENUMERATION OF CULTIVATED FERNS. 109 
Hemionitis citrifolia, Hook. Sp. Fit . — West Indies 
and Tropical America. 
2. Polybotryce. Vernation generally uniserial, distant or 
contiguous. Fronds pinnate or bi-tripinnate, rarely flabellate, 
segments adherent or articulate with the racliis. Veins free or 
combined at the margin, or anastomosing in various ways. 
* Veins free. 
t Segments adherent. 
33. RHIPIDOPTERIS, Schott. 
Vernation uniserial ; sarmentum slender, filiform. Fronds 
distant, 3-6 inches long, the sterile flabelliform, entire, bi-tri- 
Genus 33.— Fertile and barren fronds. No. 1. 
lobed or dichotomously multifid. Veins flabellately forked, free. 
Fertile frond subrotund, entire or bilobed, sporangiferous on the 
under side. 
