110 
FERNS : BRITISH AND FOREIGN. 
Sterile fronds pinnate, 1-2 feet long. Veins pinnate ; venules 
acutely anastomosing, forming oblique elongated areoles ; 
apices next the margin free and clavate. Fertile fronds bipin- 
nate ; segments convolute, wholly sporangiferous. 
1. S. serratifolium, Fee, Acrost. t. 43. Polybotrya serra- 
tifolia, Klotzsch. — V enezuela. 
41. STENOSEMIA, Fresl. 
Vernation fasciculate, erect. Fronds ternately pinnate, 6-18 
inches high ; pinnae laciniately lobed, bulbiferous. Veins pin- 
nate ; the lower venules transversely anastomosing, forming 
Genus 41. — Portion of mature frond, upper side. No I. 
elongated costal and sub-costal areoles, the superior venules 
free. Fertile segments linear, rachiform, convolute, nearly 
wholly sporangiferous. 
1. S. aurita, Fresh Acrostichum auritum, Sw.; Loire's Ferns, 
7, tt. 52, 53. Polybotrya aurita, FI. FI. Jav. t. 1 ; 
HooJc. Fil. Exot. t. 81. — Java. 
