CATALOGUE OE EEENS. 
49 
2. S. Krebsii, Kunze , Fil. t. 74. — Natal. 
68. AHTIGEAMMA, iVwZ; /. 
(Asplenii sp., ^cZ. Camptosorus, Link ; Presl.) 
Vernation fasciculate, erect. Fronds simple, cordate-lanceolate 
or sinuose-pinnatifid, 4-18 inches high. Veins forked ; venules 
angularly anastomosing, reticulated, the marginal veinlets free. 
Sporangia produced on the proximate sides of the primary ve- 
nules of each fascicle, constituting two linear, confluent sori, each 
furnished with a linear indusium, the free margins of which con- 
nive. 
1. A. rhizophylla, J. Sm. Asplenium rhizophyllum, Linn. 
Camptosorus rliizophyllus, Link ; Hook. Gen. Fil. t. 57 C. 
— North America. 
69. HEOTTOPTEEIS, J. Sm. 
(Asplenii sp., Linn, et Auct. Thamnopteris, Presl, Fp. Pot.) 
Vernation fasciculate, erect. Fronds simple, linear or broad 
elliptical-lanceolate, smooth, 1-4 feet long by 2-8 inches wide. 
Veins forked ; venules parallel, sporangiferous on their superior 
side, their apices combined by a transverse, continuous, marginal 
vein. Sori unilateral, indusium plane. 
1. W. Midus, J. Sm.;* Hook. Gen. Fil. t. 113. Asplenium 
Nidus, Linn.; Bot. Mag. t. 3101. — East Indies. 
2. If. Australasica, J. Sm. Fronds 2-3 feet long, broad ellip- 
tical-lanceolate ; base attenuated, sessile ; costa prominent, 
acute below. — Australia. 
3. N. stipitata, J. Sm. Fronds 1-1| feet long, 2 inches wide, 
stipitate.— East Indies. 
* This species is distinguished by the costa being obtuse- 
rounded below. 
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