92 



FEKNS : BE1TISH ANP FOREIGN. 



linear-lanceolate, coriaceous, smooth, the upper portion con- 

 tracted and fertile, plicate and indusiform, forming a linear 

 spike. Veins obscure ; venules compoundly anastomosing. 

 Receptacles elongated, compital. Sori linear, continuous, trans- 

 verse, on the upper portion of the fronds confluent, furnished 

 with numerous suborbicular hyaline scales. 



1. H. spicata, Presl ; Hooh. Fil. Exot. t. 78 ; Lowe's Ferns, 



2, t. 64 B. Acrostichum spicatum, Linn. ; Sin. Ic. 

 ined. t. 49. Lomaria spicata, IVilld. Gymnopteris 

 spicata, Presl. ; J. 8m. Gen. Fil. Hymenolepis ophio- 

 glossoides, Kaulf. ; Kunze, Fil. t. 47, /. 1. Hymeno- 

 lepis revoluta, LI. ; Kunze, Fil. t. 47, /. 2. — Malayan 

 Archipelago. 



2. H. brachystachys, J. Sm. H. spicata, var. brachysta- 



chys, Hooh. Oard. Ferns, t. p. Tsenitis ophioglos- 

 soides, Hort. Lips. — Malayan Archipelago. 



20. LEPTOCHILUS, Kaulf. 



Rliizomes short and csespitose, or long, slender, and surculose. 

 Fronds 6—18 inches long, of two forms : the sterile simple, lobed, 

 or pinnatifid, smooth ; the fertile contracted, linear-rachiform, 

 its margin revolute and indusiform. Veins of sterile frond evi- 



Genus20. — Portion of fertile and sterile frond, natural size; ditto fertile, enlarged. 

 No. 1. 



dent, straight or flexuose, pinnate ; venules compoundly anas- 

 tomosing. Receptacles elongated compital. Sorus linear, con- 



