HYPODERRIS. 



337 



are then very small in comparison with the central one. The whole frond, 

 lOin. to 12in. long, is somewhat undulated, with a cordate (heart-shaped) base, 

 and its margin is entire. The abundant spores germinate very freely. — 

 Hooker, Garden Ferns, t. 24. Lowe, Ferns British and Exotic, vii., t. 14, _ 



H. Seemanni — See-man'-ni (Seemann's), Prentice. 



A handsome, strong- growing species, native of Nicaragua, with oblong- 

 spear-shaped fronds IJft. long and 6in. to Tin. broad, produced from a short, 

 woody rhizome (prostrate stem), and borne on fleshy stalks 6in. to 12in. 

 long with only a few scales at the base. These fronds are pinnatifid (divided 

 nearly to a narrowly-winged midrib) in their lower part, ligulate (strap -shaped) 

 and sinuated (waved) in their upper third. The pinnae (leaflets) are spear-shaped, 

 few, and distant ; their texture is parchment-like and they are smooth on 

 both sides. The sori (spore masses) are scattered in an irregular line, 

 principally near the edge of the leaflets, — Hooker, Synopsis Filicum, p, 460. 



VOL. II. 



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