AN ENUHEBATION OF CULTIVATED tfEBNS. 187 



stramineous ; ultimate pinnules and lobes oblong-elliptical, 

 cuneiform, mavginate, usually oblique. Veins pinnately forked, 

 radiating ; venules direct, apices of the sterile clavate, free, the 



Genus 94.— Portion of frond, natural size; two ditto, enlarged. No. 1. 



fertile 2—4 converging and transversely combined by a thick 

 impressed, sporangiferous marginal receptacle. Sori oblong, 

 rarely two on each lobe. Indusium formed of the reflexed 

 margin, thick, coriaceous. 



1. O. pallens, J. 8m. Gen. Fil. (1841) ; Hook Sp. Fil. 2, t. 77 ; 

 Hook, et Bauer. Gen. Fil. t. 106 A. Adiantum 

 pallens, Stv. — Mauritius. 



95. ONYCHIUM, Kaulf. 



Vernation fasciculate and decumbent, or distant and sarmen- 

 tose. Fronds decompound multifid, 1-3 feet high, smooth ; 

 sterile segments cuneiform. Veins forked, free, their apices 

 clavate ; fertile segments linear, apiculate, veins simple, short, 



