Gymnogramme .] 
FILICES. 
509 
G. cheilanthoides, Kaulf. ; Hook, and Baker, Syn. Fil. 382 (G. filipendulaefolia, 
Desv .,) a plant of Tristan d’Acunha, is given by Swartz as a Mauritian species, 
probably in error. It has a brown stipe and rachis, and a lanceolate membranous 
pilose frond 6-9 inches long, with deltoid pinnae cut up into small ligulate 
1 -nerved tertiary segments. 
25. ANTROPHYUM, Kaulf. 
Capsules stalked, splitting transversely, with an incomplete vertical 
ring. Sori dorsal, linear, anastomosing copiously, scattered over the 
whole under surface of the frond, without any involucre. — Fronds sim- 
ple, coriaceous or membranous, rather fleshy, tufted, sessile or stipi- 
tate, the veins always immersed and anastomosing copiously, the 
basal scales dull brown and clathrate, like those of Vittaria. 
Distbib. Tropics of both hemispheres. Species 15. 
Sori entirely immersed 1. A. immersum. 
Sori half immersed 2. A. reticulatum. 
Sori superficial 3. A. Boryanum. 
1. A. immersum, Mett. ; Hook and Baker , Syn. Fil. 393. Fronds 
oblanceolate, coriaceous, 3-5 in. long, f-1 in. broad at the middle, 
sessile or narrowed gradually to a short stipe ; midrib visible at the base 
only. Sori slender, completely immersed in a deep groove. A. pumi- 
lum, Kaulf. ; Bojer , Hort. Maur. 398. A. Hookerianum, Fee, 
Mauritius and Seychelles, on old trunks in the forests. Also Bourbon and 
Java. 
2. A. reticulatum, Kaulf. ; Hook, and Baker , Syn. Fil. 393. 
Fronds oblanceolate, subcoriaceous, 9-12 in. long, If in. broad above 
the middle, narrowed gradually to the base, the broad midrib visible 
in the lower half. Sori stouter than in A. immersum , not more than 
half immersed in the shallower groove. A. callsefolium, Blume. 
Seychelles, in the woods of Mahe and Silhouette, not common, Horne , 683 ! 
Tropical Asia, not African. 
3. A. Boryanum, Kaulf; Hook, and Baker , Syn. Fil. 394. Fronds 
broad oblanceolate, membranous or coriaceous, 1-lf foot long, 2f-4 
in. broad above the middle, acute in the typical form, narrowed gradu- 
ally from the middle to the base or a short stipe ; midrib visible near 
the base only. Sori much more abundant than in the other two 
species, very slender, anastomosing more copiously, hardly at all im- 
mersed. A. giganteum, Bory ; Hook, and Baker , loc. cit. A. obtusum, 
Kaulf. ; Bojer, Hort. Maur. 398. 
Mauritius, frequent in the mountain forests.. Also Bourbon and Comoros. A. 
obtusum is a variety with a narrower and more obtuse frond than in the type, and 
A. giganteum a large coriaceous form. 
