116 



ferns : fcr.iTiSn and foreign. 



Sterile fronds pinnate, 1-2 feet long. Veins pinnatfi; venv.Vl 

 acutely anastomosing, forming oblique elongated areoies; 

 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, Khtzsch. — Venezuela. 



41. STENOSEMIA, Tresl. 



Vernation fasciculate, erect. Fronds ternately pinnate, 6-18 

 inches high ; pinnre laciniately lobed, bulbiferous. Veins pin- 

 nate ; the lower venules transversely anastomosing, forming 



Genus 4!.— Portion of mature frond, upper side. No I. 



elongated costal and sab-costal areoies, the superior venules 

 free. Fertile segments linear, rachiform, convolute, nearly 

 wholly sporangiferous. 



1. S. aurita, Fresl. Acro3lichum aurilum, Sw.; Lowe's Ferns, 

 7, tt. 52, 53. Polybotrya aurita, PI. Tl. Jav. t. 1 • 

 Hook. Fil. Exot. t. 81.— Java. 



