Illust. Hook. Fil. Exot., t. 78; Hook. Gard. Ferns, t. 3; 
Moore Ind. Fil, p. 15, A; J. Sm, Ferns, Brit. and 
For., fig. 19; Hook. Syn. Fil., t. 8, fig. 60, cc., dd., ee. 
Oss.—This genus is distinguished from Drymoglossum 
by the fronds being uniform, and their contracted upper 
portion bearing the sporangia, which become confluent, 
and which led some authors to place it in the genus Acros- 
tichum, 
Sp. H. spicata (Linn.) (v v.); H. platyrhynchos, J. Sm. ; 
H. brachystachys, J. Sm. (H. spicata var. brachystachys, 
Hook. Gard. Ferns) (v v.). 
H. spicata is found very generally throughout the tropics 
of the Eastern Hemisphere, while H. platyrhynchos is as yet 
only known as a native of Luzon. 
35. Leprocuiius, Kaulf. (1824). 
Acrostichum sp. auct.; Hook. Sp. Fil. 5 
Surculum cwspitose, or slender elongating. Fronds 
6 to 18 inches long, of two forms; the sterile simple, 
lobed, or pinnatifid, smooth ; the fertile contracted, linear- 
rachiform, its margins revolute and induseform. Primary 
veins of sterile frond evident, straight or flexuose, venules 
compoundly anastomosing. Receptacles elongated, compital. 
Sorus linear, continuous, uniserial on each side of the | 
costa, ultimately confluent, destitute of scales. 
Type. Acrostichum arillare, Cav. EAE V : 
Illust. Hook. Gard. Ferns, t. 6; J. Sm. Ferns, Brit. and 2 
.... For, fig. 20. 
Ozs,—I have already stated that on account of the 
contraction of the fronds in the preceding genera, the = 
| individuality of the normal punctiform receptacle is des- : 
: troyed, and they become so connected as to forma continuous ` 
CHARACTERS OF TRIBES AND GENERA. UB - 
