178 
becomes the. receptacle. Sori situated in a 
longitudinal slit of the margin. Fronds simple, 
linear, grass-lile. 
Vittaria elongata Sw. 
Rhizome creeping, clothed with scales having 
black hair-like points. Stipes short. Fronds 
up to 44 feet long, 4-inch broad, simple, linear 
acuminate, (grass-like) pendulous. Surfaces 
' smooth, naked. Texture fleshy to almost 
leathery. Midrib prominent beneath, veins 
sunk in the substance of the frond, proceeding 
at an acute angle from the midrib, almost 
parallel, their apices connected by a transverse 
intramarginal vein. Sori linear, continuous, 
quite sunk in the marginal grove. [Fig. 42.] 
Distribution: Bombay Presidency—North 
Kanara, on trees, Sumkund. 
South India, on the western mountains, 
2,000-5,000 feet ; Ceylon, Central Provinces ; 
North India fromthe plains up to about 4,000 
feet; Malay Peninsula; Burma, etc.—Malay 
Islands; Queensland; Polynesia; Tropical 
Africa ; Mauritius. 
Genus XLIIJ.—Hemionirtes L. 
(Deriv. Hemtonos, a mule—the mule-fern.) 
