AN ENUMERATION OF CULTIVATED FERNS. 97 
hypogeous and naked. Fronds stipate, 1-2 feet long, simple, 
linear lanceolate or broad elliptical, rarely pinnatifid, smooth, 
opaque, the fertile longer than the sterile, and often sub-con- 
tracted. Primary veins costaeform, straight; venules com- 
pound, anastomosing with free veinlets terminating in the 
areoles. Receptacles compital, elongated, oblique, forming a 
continuous or sub-interrupted linear sorus between the primary 
veins. 
* Fronds simple. 
1. S. caudiforme, J. Sm. Polypodium caudiforme, Plume , 
Fil. Jav. t. 54, f. 2. Grammitis (Selliguea) caudi- 
formis, FLodk. Bot. Mag. t. 5328. Gymnogramma 
(Selliguea) caudiformis, Hoolc. Sp. Fil. — Java. 
** Fronds pinnatifid. 
2. S. pothifolia, J. Sm. in Fn. Fil. Phil. Hemionitis po- 
thifolia, Don. Grammitis decurrens. Wall. ; Hook, 
et Grev. Ic. Fil. t. 6. Gymnogramma (Selliguea) 
decurrens, Hook. Sp. Fil. — India, Japan, Philippine 
and Fiji Islands. 
24. COLYSIS, Fred. ; Fie. 
Rhizome short, sub-hypogeous. Fronds simple lobed or 
Genus 24.— Portion of mature frond, under side. No I. 
H 
