CATALOGUE OE EEKNS. 
33 
csespitose. Fronds simple-reniform, pinnate or bi-tripinnate ; 
pinnae and pinnules articulated with the petiole ; costa excentric 
or obsolete. Veins unilateral or radiating, forked ; venules free, 
terminating in the axis of a reflexed orbicular or elongated por- 
tion of the margin (indusium), which is altered in texture, venose 
and sporangiferous on, its under side, and ultimately becomes 
replicate. 
1. A. reniforme, Linn. ; Hoolc. Fxot. FI. t. 104; Hook. Sp. 
Fit. t. 71 A. — Madeira, Teneriffe. 
2. A. caudatima, Linn. ; Sckk. Fit. t. 117. — East Indies. 
3. A. obliquum, Willd. ; Hook. Sp. Fit. t. 79 A. — Tropical 
America. 
4. A. lucidum, Sw.; Hook. Sp.Fil. t.*79 C. — Tropical America. 
5. A. Wilsoni, Hook. Sp. Fil. t. 72 A. — Jamaica. 
6. A. macrophyllum, Sw. ; Hook, el Grev. Ic. Fil. t. 132. — 
Tropical America. 
7. A. pulverulentum, Linn. ; Plum. Fil. t. 55 ; Sckk. Fil. t. 
119. — Tropical America. 
8. A. heterophyllum, Willd. — Tropical America. 
9. A. prionophyllum, H. B. K . — Tropical America. 
10. A. Hrasiliense, Fadd. Fil. Bras. t. 76. — Brazil. 
11. A. fovearum, Fadd. Fil. Bras. t. 77. — Brazil. 
12. A. cultratum, J. Sm. ; Hook. Sp. Fil. — West Indies. 
13. A*, trapeziforme, Linn. A. rhomboideum, Sckk. Fil. t. 
122. — Tropical America. 
14. A. pentadactylon, Lang, el Fisck. Ic. Fil. t. 25 ; Hook, et 
Grev. Ic. Fil. t. 98.— Brazil. 
15. A. pe datum, Linn.; Sckk. Fil. t. 115. — North America, 
Northern India. 
16. A. afEne, Willd. A. trapeziforme, Forst. ( non Linn .) ; 
Sckk. Fil. 121 B. A. Cunninghami, Hook. Sp. Fil. t. 86 
A. — New Zealand. 
17. A. formosnm, F. Br. ; Hook. Sp. Fil. t. 86 B. — Australia, 
New Zealand. 
18. A. Eabellatmn ; Linn. A. amoenum, Wall.; Hook, et 
Grev. Ic. Fil. t. 103. — East Indies. 
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