TAB. XCIX. 
Hymenolepis platyrhynchos, Kze . 
Frondibus caespitosis elongatis sublorato-lanceolatis coriaceo- 
membranaceis costatis basi in petiolum brevem attenuates, 
appendice terminali fructifera oblonga plana, soro oblongo 
amplo elevato discum occupante, caudice crasso descendente 
squamoso. 
Hymenolepis platyrhynchos. Kze. in Schkh. Fil. Suppl.p. 102. 
Gymnopteris platyrhynchus, J. Smith , in Hook. Journ. Bot. 3. 
p. 403. 
Macroplethus platyrhynchus, Presl , Epimel. Bot. p. 142. 
Hab. Luzon, Cuming , n. 196. 
This fine and apparently very rare Fern (for hitherto it has 
been found only by Mr. Cuming) was first named by Mr. J. 
Smith Gymnopteris platyrhynchus , a genus from which it 
differs widely in habit, in the monomorphous fronds, and in 
the limited mass of fructification. Kunze has, as it appears to 
me with more propriety, referred it to Hymenolepis , which 
indeed Presl united with Gymnopteris in his “Tentamen 
Pteridographiae,” but which it may be presumed he now 
retains, since in his remarks upon Macroplethus , a genus 
destined for our present plant, he says, differt ab Hymeno- 
lepide , quacum venis yenulisque accedit, soro sub apice frondis 
centrali solitario elliptico, margine frondis piano undique 
cincto, receptaculo elliptico non solum parenchymati sed 
quoque costae insidenti.” Even M. Fee cannot assent to these 
views, and he arranges the species with Hymenolepis. 
Fig. 1. Sterile portion of the frond, showing the venation. 
—magnified. 
