AH ENUMEEATION OF CUITIVATED PERNS. 



257 



H. elegans, Fresl. Trioliomanes elegans, Budge, Ouian. 

 t. 35 [mpa/rt) ; Hook. Gen. Fil. t. 108 ; Eooh. 0<wd. 

 Ferns, t. 2. — Gruiariaj Trinidad, Pacific side of Central 

 America. 



Sub-Oedbk rv.— O SMUNDACE^. 



Sporangid globose, oval or oblong, opening vertically ; apex 

 striated, tlie striae forming a more or less complete ring, which 

 is Sometimes rudimentary only. 



Tbibe I.— SCHIZ^^. 



Sporamgia, oval or oblong, opening, on the exterior side, bro- 

 duced on contracted racemes, or on. 

 terminal or marginal spike-like 

 appendices, or the fertile frond is 

 wholly contracted, or snb-con- 

 tracted. Apical ring complete. 



141. LYGODIUM, 8w. 



Vernation nniserial, distant 

 and sarmentose, or contiguous 

 and csespitose. Fronds scandent, 

 twining,, extending to an inde- 

 finite length; pinnse conjugate, 

 palmate-lobed, pinnatifid or pin- 

 nate. Veins forked, free. 8po- 

 ra/ngiferons apikelets marginal, 

 composed of two rows of imbri- 

 cate indusiate cysts, each cyst 

 containing an oval resupinate spo- 

 rangium attached by its inner 

 side, and opening longitudinally 

 on its outer side. 



1. ii. palmatiun, 8w.; Schk. 

 Fil. 1140 ; Lowe's Ferns, 

 8,<. 74; Hook. Fil Fxot. 

 t. 24. — North America. 

 T. 



8 



Gb.113 hi. — Portion of feiLHo 

 frond, under side. No 2, 



