TAB, XX, 
Aspidium (Nephrodium) heterophyllum. 
Frondibns caespitosis pubescenti-hirsutis simplicibus lingulato- 
oblongis brevi-acuminatis, sterilibus venis anastomosantibus, 
fertilibus angustioribus venis simplicibus, ambabus lobato- 
pinnatifidis lobis obtusis,involucris parvis deciduis, stipitibus 
brevibus hirsutis sparsimque squamosis, caudice repent e. 
Nephrodium Blumei, J. Sm. in Hook . Journ. ofBot, 3. p. 411. 
exclus. syn. 
Haplodictyum heterophyllum, Presl. Epimel. Bot. p. 51. Fee , 
Gen. Fit. p. 309. 
Hab. Samar, Phillipine Islands, Cuming , n. 322. 
Mr. J. Smith was the first to notice this Fern, and he re- 
ferred it, in his account of the Ferns of the Phillipine Islands, 
collected by Mr. Cuming, to Nephrodium , being aware of 
course of the presence of an involucre to the sorus : and, be- 
lieving it to be identical with the Gymnogramme canescens , of 
Blum. Fil. Javce , tab. 93, he called it Nephrodium Blumei. 
The fertile fronds (supposing the involucre to exist in an early 
stage) are quite those of Nephrodium , but the sterile ones are 
remarkable for the anastomosing of the veins at a little dis- 
tance from the primary vein. Hence Presl has formed of this 
Fern a new genus, between Pleocnemia and Nephrodium , in 
which he has been followed by M. Fee. Presl is assuredly 
correct in excluding Mr. Smith’s reference to the Gymno- 
gramme canescens , Blume, (Gonophlebium, Presl) ; that plant 
has a long stipes, very acuminated and deeply pinnatifid (below 
pinnate) fronds, and apparently never any involucre ; in shape 
very much resembling our Aspidium (Nephrodium) Skinneri , 
Tab. 24. 
Fig. 1. Portion of a fertile frond. /. 2. Portion of a sterile 
ditto : — magnified. 
