Prats 6. 
GYMNOPTERIS pecurrens, Hook. (not of Fil. Exot.) 
Decurrent Gymnopteris. 
GyMNopreRis decurrens ; caudex long, creeping, flexuose, scarcely paleaceous ; 
fronds distant, sterile ones broadly ovato-lanceolate, costate, membranaceous, 
undivided, acuminate, below rather suddenly attenuated and long, decurrent 
upon the stipes sometimes almost to the base; primary veins pinnate, se- 
condary ones arcuato-transverse, and forming large subquadrangular areoles, 
which are filled by anastomosing veinlets, whose angular areoles have free, 
clavate veinlets ; stipes short, epaleaceous ; sterile fronds narrow-linear, elon- 
gated, upon very long stipites, undivided, quite scaleless; sori continuous, 
uniform on each side the costa, and extending partially to the upper side. 
Leprocuixus decurrens. Bl. Enum. Fil. Jav. p. 206. Fée, Acrost. p. 88. t. 48. 
f. 2. 
AcrosticHuM rivulare. Wall. Cat. n. 2165. 
Has. Java, Blume. Penang, Wallich. Ceylon, common, Mrs. Gen. Waiker, 
Gardner, n. 1157. ‘‘Nibari,” Dr. Buch. Hamilton, in Wail. Assam, Si- 
mons. Khasya, 2-3000 feet of elevation, Hooker fil. and Thomson. 
That this is the Leptochilus decurrens of Blume, as far as can 
be decided by Fée’s figure, there can be no doubt. We can 
now record it a native of Penang, as well as of Java and of Cey- 
lon, and of Khasya and Assam, on the continent of India, Bengal 
Presidency. It has a very close resemblance to the Lept. lanceo- 
latus of Fée, inhabiting similar regions in tropical India, but that 
has narrower sterile fronds and less pronounced primary pinnated 
veins. All the species of Leptochilus known to me are very va- 
riable, and I have reason to think that Ceylon specimens which 
have accompanied some of this Gymnopt. decurrens, may be a 
state of the same plant. Blume compares this species with Lep- 
tochilus axillaris of Kaulfuss ; but that is remarkable for its very 
long scandent caudex, and is the Lomaria serpens, Wall. Cat. 
n. 32. 
Leptochilus of Kaulfuss, as it appears to me, should be united 
to Gymnopteris, and ranked in the acrostichoid Ferns; but in 
transferring our present species there, I am obliged to sacrifice 
the name Gymmnopteris decurrens (figured and described in the 
‘ Filices Exotice,’ t. 94), and I would suggest that that be called 
Gymnopteris Harlandi, after its discoverer in Hongkong. 
FEBRUARY Ist, 1861. 
