92 
FERNS : BRITISH AND 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 uj>per portion of the fronds confluent, furnished 
with numerous suborbicular hyaline scales. 
1. H. spicata, Presl ; Hook. Fil. Exot. t. 78 ; Lowe's Ferns, 
2, t. 64 B. Acrostichum spicatum, Linn. ; Sm. Ic. 
ined. t. 49. Lomaria spicata, T Villd. Gymnopteris 
spicata, Presl. ; J. Sm. Gen. Fit. Hymenolepis ophio- 
glossoides, Kaulf. ; Kunze, Fil. t. 47, f. 1. Hymeno- 
lepis revoluta, Bl. ; Kunze, Fil. t. 47, /. 2. — Malayan 
Archipelago. 
2. H. brachystachys, J. Sm. H. spicata, var. brachysta- 
chys. Hook. Gard. Ferns, t. 3. Taenitis ophioglos- 
soides, Hort. Lips . — Malayan Archipelago. 
20. LEPTOCHILUS, Kaulf. 
Rhizomes short and crespitose, 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- 
dent, straight or flexuose, pinnate ; venules compoundly anas- 
tomosing. Receptacles elongated compital. Sorus linear, con 
