TAB. IX. 
Gymnogramme RENIFORMIS, Mart, 
Caudice brevi crasso basi fibroso superne copiose paleaceoj 
squamis subulatis ferrugineis nitidis, stipitibus cgespitosis 
3-uncialibus ad semipedalem ebeneis, frondibus sesquiun- 
cialibus coriaceis renifornii-rotundatis, venis approximatis 
fiabellatis dicbotomis, soris linearibus parallelis in zonam 
semilunatam discum occupantem confluentibus. 
Gymnogramme reniformis. Mart, Ic, PI, Crypt, p, 88. t, 26. 
Pterozonium reniforme. Fee Gen, Fit, p, 178, tah, 16, A. Moore^ 
Ind, Fit, p, Ixi. 
Hab. Brazil ; dense woods on Mount Cupati, near the River 
Japura, Martins, Near Tarapota, Eastern Peru, on Mount 
Guayrapurima, Spruce, 1856. 
One of the rarest and most beautiful of Ferns, with its 
undivided reniform fronds, and tbe curious crescent-shaped 
mass of sori, and the glossy ebeneous stipites. I am not 
aware that it has ever been gathered, but by the two eminent 
Botanists and S. American travellers just mentioned. Mr. 
Moore, in adopting the Genus Pterozonium, does not fail to 
remark, that it is ‘^technically not very different from 
Gymnogramme, but the aspect of the plant is so peculiar, that 
the parallel contiguous receptacles, from which result a broad 
submarginal confluent sorus, may well be considered sufficiently 
distinctive.” I am not aware that its habit is more peculiar in 
the genus than the Gymnogramme figured in our preceding 
plate, which, nevertheless, Mr. Moore properly retains in 
that genus, rather than adopt J. Smith and Fee’s Hecistopteris, 
At any rate, our present Fern is not more remarkable among 
the species of Gymnogramme, than Adiantum reniforme and 
asarifolium and Parishii, Trichomanes reniforme, and Lindscea 
reniformis, are in'their respective genera. 
Martins appears to have gathered specimens nearly a foot 
tall. 
Fig, 1. One half of a fertile frond, seen from beneath, f, 2. 
Portion of do., showing the arrangement of the sori on the 
veins, and the receptacles : — magnified. 
Cent. 2. t. 9, 
