CHARACTERS OF TRIBES AND GENERA. 151 
11 inch long, 6 to 12 pairs, oblong elliptical, short petiolate, 
densely sericeo squamose. Veins uniform, anastomosing towards 
the margin. Sporangia obscure, hidden by the silky squame. 
H. vestita, J. Sm. (Grammitis, Wall., Bedd. F. Brit. Ind., 
pl. 154); H. Muelleri, J. Sm. (Gymnogramma, Hook.) ; 
H. aureo-nitens, J. Sm. (Acrostichum, Hook.) 
Oss.—The fine silky hairs and squamæ common to these 
three species is sufficient to indicate that they are naturally 
allied ; the latter, however, differs in having two kinds of 
fronds, the sterile being simple, oblong spathulate, and the 
fertile pinnate. 
In the *Species Filicum," H. Muelleri is described as 
having free veins, but in the specimens which I have 
examined I found them to be netted. 
These three species are very local, the first being a native 
of Nepal, the second of Queensland, and the third found 
only in the Galapagos. 
*** Cardinitis. 
Caudex decumbent, sub-sarmentose, short. Fronds stipitate, 
cordate hastate, firm, smooth, Sori copious, contiguous, be- 
coming confluent. 
H. cordata, Hozb. (v v.) 
Throughout India, the Malay, and the Philippine Islands. 
Oss.—For H. Grifithii, Hooker, and Wilfordii, Hook., see 
Dictyocline ; and for H. citrifolia, Hook., see Anetium. 
* 
65.—Synoramma, J. Sm. (1845). 
Gymnogramma sp., Hook. Sp. Fil. 
Vernation uniserial, sarmentum short. Fronds stipitate, 
contiguous, smooth, entire, simple, linear lanceolate, oblong E 
. elliptical, or rarely pinnate, 6 to 12 inches long. coe UE 
forked close to the mid-rib, venules direct parallel, their — S 
