CHARACTERS OF TRIBES AND GENERA. 365 
Sp. M. alata, Sm. (v v.); M. cicutefolia, Kaulf. (v v.) ; 
M. elegans, Endl. (v v.); M. fraxinea, Sm. (v v.) ; M. laxa, 
Kze. (v v.); M. purpurascens, De Vriese (v v.) (Marattia 
Ascensionsis, J. Sm. Cat., 1856); M. Verschaffeltiana, J. Sm. 
(v v.). 
215.—Evpoprum, J. Sm. (1841). 
Vernation and general character as in Marattia, differing 
in the synangia being pedicellate. 
Type. Marattia levis, Kaulf. 
Ilust. Hook. and Bauer Gen. Fil., t. 118; Moore Ind. 
Fil., p. 97 B. ; J. Sm. Ferns, Brit. and For., fig. 151. 
Ups This genus agrees with Marattia in general cha- 
racter, but differs in the synangia being seated on a little 
foot stalk (pedicel), similar to the genus Peranema. 
| Sp. E. Kaulfusii, J. Sm. (Marattia Kaulfussii, Hook. 2nd 
| Cent. Ferns, t. 95) (v v.). 
A rare Fern, native of Brazil. 
216.—Danaa, Sm. (1793). 
Vernation uniserial, contiguous, decumbent ; sarmentum 
thick, fleshy ; each frond rising from between two short - 
Stipuleform appendages, and having the stipes once or 
. more times articulated. Fronds pinnate, rarely simple, 
1 to 3 feet high, the fertile usually somewhat contracted ; 
pinns opposite, linear-lanceolate, articulated with the 
rachis. Veins forked ; venules parallel, their apices arcuate 
and anastomosing at the margin. Synangia sessile, im- 
 mersed, linear contiguous, occupying nearly the whole 
length of the venules; each consisting of two rows of 
| numerous laterally and oppositely connate cells, united into — 
j ® concrete mass, forming a linear synangia, each cell T 
opening by a circular pore. Te 
