Ferns of British India and Ceylon. 439 
meniscioid sori being very common in flagellifera). Sir W. Hooker 
in his Sp. Fil. quite correctly described this species and its varieties ; 
but he lumped subcrenata with contaminans, though he had formerly 
distinguished it, first under the name of subcrenata, and afterwards as 
proUfera. Mr. Baker, not Understanding the three species, lumped 
them all in his edition of the Synopsis ; and Mr. Clarke, not knowing 
subcrenata, has puzzled pteridologists with a lot of varieties which do 
not exist; I have had subcrenata and contaminans (very common South 
Indian plants) for many 
years in cultivation, and 
costata (not South Indian) 
I have seen in abundance 
in Birma, and know them 
to be three distinct species 
without any permanent 
varieties, though all three 
variable, as are nearly all 
other Gymnopteris. 
North India, Nepal 
and Chittagong, up to 
3,000 feet elevation ; Bir- 
ma. (Some of the larger 
forms turn very red in dry- 
ing.) The meniscioid form 
(deltigera) is commo;i in 
Sikkim and Assam, the 
undulate form (formerly de- 
scribed as a genus, Jenkin- 
sia) is, I believe, only from Birma. 
Acres, virens. Wall. Cat. 1033, fromTavoy, is a blank sheet, so 
it is impossible to say whether the fern intended to be represented 
was this species or contaminans ; it could not be subcrenata, as it 
does not grow in Birma. 
13. Gymnopteris Presliana. (Hook) Rhizome stout creep- 
ing, paleaceous with narrow attenuated lanceolate scales ; stipes 6-to 
