AN ENUMERATION OP CULTIVATED FERNS. 



97 



hypogeous and naked. Fronds stipate, 1-2 feet long, simple, 

 linear lanceolate or broad elliptical, rarely pinnatifid, smooth, 

 opaque, the fertile larger than the sterile, and often sub-con- 

 tracted. Primary veins costseform, 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, /. Sm. Polypodium caudiforme, Blume, 

 Fil. Jav. t. 54, /. 2. Grammitis (Selliguea) caudi- 

 formis, HooJc. Sot. Mag. t. 5328. Gymnogramma 

 (Selliguea) caudiformis, Hook. Sp. Fil. Java. 



** 



2. S. pothifolia, J". 8m. in En. 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, Presl. ; Fee. 

 Rhizome short, sub-hypogeous. Fronds simple lobed or 



Genus 24. Portion cf mature frond, under side. No. 1. 



