|. 90 CHARACTERS OF TRIBES AND GENERA. 
Surculum thick and fleshy, or slender and sub-bypoga- 
ceous. Fronds: pinnatifid or pinnate, rarely simple, uni. 
form, 1 to 3 feet high, smooth or slightly pubescent, ` 
segments and pinne adherent with the rachis. Veins 
_ once or more times forked, or equally pinnate, the lower ` 
anterior venule always free, the rest angularly anasto- 
mosing, and generally producing an excurrent free veinlet 
from their angular junctions. Receptacles punctiform, super- 
ficial, terminal on the anterior free venules, and also often 
on the excurrent veinlets, Sori round or rarely oblong, ` 
solitary in the areoles, transverse one to six serial, naked. - 
Type. Polypodium loriceum, Linn. 
Illust.—Hook. and Bauer, t. 70, B. ; Hook. Syn. Fil.t. 
5, fig. 48, h. ; J. Sm., Ferns Brit, and For., fig. 4. 3 | 
Ozs.—The name Goniophlebium was originally given by 
Blume to a section of Polypodiwm, consisting of a few 
species, natives principally of the Malayan Islands. Presl 
in his “Tentamen” raised the name to the rank of a 
genus, under which he enumerates eight species, three 
_ which constitute Blume's section Goniophlebium, the others 
e being natives of the West Indies and Tropical America. 
He also characterises another genus, and adopts for it the 
Dome Marginaria, first given by Bory to P. incanum of 
Swartz. Under this genus he enumerates thirty-six 
Species, which he arranges under two sections. The 
_ first contains nine species, which differ entirely in habit 
from his second section, which consists of twenty-five. 
species, sixteen of them, with the exception of M. amena, 
being natives of America, and possessing no characte! 
either in habit or venation to distinguish them from 
Presl’s American species of Goniophlebium. The other 
mine like those of the first species, although agreeing V 
S ee nevertheless differ = in habit. S 
