136 



FERNS I BRITISH AND FOREIGN. 



63. MENISCIUM, Sclirel. 



Vernation fasciculate and decumbent, or uniserial and sar- 

 mentose. Fronds pinnate, rarely simple, 1-8 feet high. PH- 

 mcvry veins costaeform, pinnate ; each opposite pair of venules 





Genus 63. Portion of mature frond. No. 4. 



angularly or arcuately anastomosing and sporangiferous, pro- 

 ducing from their junction an excurrent, free, sterile veinlet. 

 Receptacles medial, linear, continued across the junction of the 

 venules, forming arcuate, transverse sori. Sporangia in some 

 species pilose. 



* Fronds simple. 



1. M. simplex, Hook. Lond. Journ. Bot. v. 1, i. 11 ; Hook. Fil. 



Exot. t. 83. Hong-kong. 



2. M. giganteum, Metten.; Hook. 8p. Fil 5, p. 163. 



Tropical America. 



** Fronds pinnate* 



3. M. triphyllum, Sw. ; HooJc. et Grcv. Ic. Fil. 1. 120 ; Eunze, 



Fil. t. 52. India, Ceylon. 



4. M. pahistre, Padd. Fil. Bras. t. 20; Hnoh. Gen. Fil. rf.40; 



Lowe's Ferns, 2, t. 45. Brazil. 



