— 344 — 



18. L. scalpturatus (Fée) G. Chr. Ind. 387 (excl. syn. omnibus, 

 Heteronevron scalpturatum Fée exceptum), var. undulatus var. nov. 

 Gymnopteris costata var. undulata Christ, 1. c. 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 G. Ghr. Ind. 388, but it has broader and shorter sterile 

 pinnæ with red veins, and much broader fertile pinnæ. Acrost. virens Hook, 

 et Grev. Ic. t. 221 has similar pinnæ, but the venation is very different, 

 about as in A. costatum Wall.; A. crispatulum Wall., Glarke, Ferns of 

 N. India t. 84 B, D, has often red veins, but its pinnæ are much narrower. 

 I am inclined to believe that the following three species may be maintained. 



Leptochilus costatus (Wall.) G. Ghr. 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 G. Ghr. Ind. 388. A. contaminans Wall. ; Gym- 

 nopteris contaminans Bedd.; A. crispatulum Glarke, Ferns N. Ind. 

 580 (an Wall.?; includes both A. contaminans Wall, and A. crispatulum 

 Wall.). 



South India, Geyion, Birma. 



var. crispatula (Wall.) Glarke 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 L. 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. scalpturatus (Fée) G. Ghr. Ind. 17, 387 part.; Heteronevron 

 scalpturatum Fée, Acrost. 95 t. 94. 



Philippines, Malaya, Siam. 



In all three species a form occurs, which is marked by its 

 fertile pinnæ being sporangiferous along the margins only, leaving 

 a broad disk in the centre of the pinnæ free of sporangia. The first 

 of these forms was named Nothochlaena undulata by Wallich, and 



