420 344 
18. L. sealpturatus (Fée) C. Chr. Ind. 387 (excl. syn. omnibus, 
Heteronevron scalpturatum Fée exceptum), var. undulatus var. nov. 
Gymnopteris costata var. undulata Christ, 1. ¢. 109, — (no. 891). 
The nomenclature of certain species of Leptochilus § Heteronevron 
(Fée) is confused. In Ind. Fil. 387 I have identified Acrostichum costatum 
Wall. Gymnopteris costata Bedd. with Heteronevron scalpturatum Fée, 
Acrost. 95 t. 56, because Fée himself, although with doubt, referred 
A. costatum Wall. to his described and well illustrated species. A com- 
parison of Fée’s illustration (Acrost. t. 56) with specimens of A. costatum 
Wall. from Assam, leg. G. Mann, shows at once that we have here two 
widely different forms. The form illustrated by Fée is, according to 
authentical specimens examined by me, collected near Manila by Gaudichaud; 
it is in venation not materially different from <Acr. contaminans Wall. = 
Leptochilus virens C. Chr. Ind. 388, but it has broader and shorter sterile 
pinne with red veins, and much broader fertile pinnae. Acrost. virens Hook. 
et Grev. Ic. t. 221 has similar pinne, but the venation is very different, 
about as in A. costatum Wall.; A. crispatulum Wall., Clarke, Ferns of 
N. India t. 84 B, D, has often red veins, but its pinne are much narrower. 
I am inclined to believe that the following three species may be maintained. 
Leptochilus costatus (Wall.) C. Chr. comb. nov.; Acrostichum 
costatum Wall.; Gymnopteris costata Bedd. etc. (see Ind. Fil. under 
L. scalpturatus), with var. Meniscium deltigerum Wall. —? Notho- 
chlaena undulata Wall. 
North India. 
L. virens C. Chr. Ind. 388. A. contaminans Wall.; Gym- 
nopteris contaminans Bedd.; A, crispatulum Clarke, Ferns N. Ind. 
580 (an Wall.?; includes both A. contaminans Wall. and A. crispatulum 
Wall.). 
South India, Ceylon, Birma. 
var. erispatula (Wall.) Clarke 1. c.; Bedd. Handb. Suppl. 105. 
Khasia Hills. 
The specific name of this species I have not changed, although 
it is an open question, what A. virens Hook. et Grev. may be; 
probably it is a form allied to ZL. costatus. The proper name. of 
the species ‘is perhaps contaminans; still some other forms now 
referred to the present species have been described and illustrated 
before contaminans. 
L. sealpturatus (Fée) C. Chr. Ind. 17, 387 part.; Heteronevron 
scalpturatum Fée, Acrost. 95 t. 94. 
Philippines, Malaya, Siam. 
In all three species a form oceurs, which is marked by its 
fertile pinne being sporangiferous along the margins only, leaving 
a broad disk in the centre of the pinne free of sporangia. The first 
of these forms was named Nothochlaena undulata by Wallich, and 
