Ampvriran Fern Journal 
Vol. 7 APRIL-JUNE, 1917 No, 2 
New Polypodiums From Tropical America 
CARL CHRISTENSEN 
In the last number of his highly valuable ‘‘ Studies of 
Tropical American Ferns’! Mr. William R. Maxon has 
given a revision of the species pertaining to the groups 
of Polypodium furfuraceum and P. squamatum, which 
groups fall under the genus Lepicystis, as defined by 
Diels, or Polypodium, Section Marginaria, of Index 
Filicum. Trying to determine my material of the two 
groups in accordance with Maxon’s treatment, I found 
some specimens in my bundle of species grouped to- 
gether under Section Marginaria, which I noted as 
probably new species long ago. I take the opportunity 
now to describe two of them. 
Polypodium steirolepis C. Chr., sp. nov. 
Polypodium inde Hook; Sop. Fu. GS: 17. 86s 
(not Hassk. 1 
Under P. aaa Kunze, Mr. Maxon? lists a Vene- 
zuelan specimen of the collection cited below (Eggers 
13041). I cannot, of course, know whether the plant in 
the U.S. National Herbarium really belongs to P. leuco- 
sticton, but my specimen is clearly different from that 
Species as defined by Hieronymus, although it most 
probably is a near ally of it and of P. plebejum. I have 
little doubt of the identity of my specimen with P. 
nigripes Hook. Hooker’s description fits very well; 
nevertheless the specimen has not black stipes and rachis. 
1 Contr. U. = frsdast Herb. 17, Part 7. 1916. 
2 Loc. cit. 
(No. 1 of xs pi CE (7: 1-32, Plate 1,) was issued March 3, 1917,] 
