90 



FERNS : BRITISH AND POEEIGN. 



17. NEVRODIUM, Fee. 



Rhizome short, caespitose. Fronds simple, entire, 6-12 

 inches long, lanceolate, thick and fleshy, the fertile portion 

 somewhat contracted. Veins obscure; venules compoundlj 

 anastomosing. Receptacles elongated, compital. Sori linear, 



Genus 17. Portions of fertile frond, natural size. No. 1. 



continuous, transverse marginal, on the upper portion of the 

 fronds destitute of scales. 



1. N. lanceolafrum, Fee, Gen. Fil. t. 8 c. Lowe's Ferns, 2, 

 t. 64 A. Pteris lanceolata, Linn. (Plum. Fil. 1. 132). 

 Tasnitis lanceolata, R. Br. Drymoglossum lanceola- 

 tum, /. Sm. (olim). Pteropsis lanceolata, Desv,; 

 Hook. Fil Exot. t. 45. West Indies. 



