228 
confounded with the preceding species. ‘The pinnules are 
nearly twice as long, much narrower, and, at the same time, 
more gradually attenuated: the margin is very broadly and 
obtusely toothed (not serrated), the sori are placed at some 
little distance from the margin, remote from each other; the 
capsules are larger, more rounded at the apex, with a shorter 
and blunter orifice; but the most striking points of difference 
are to be found in the sori occupying the whole of the acu- 
minated apex of the pinnules, and in the nerves, which are 
much wider apart than in A. evecta, while there is a slender, 
but very evident, pellucid simple nerve, extending from the 
sinus of the teeth, and terminating near the midrib. Mr. 
Mathews remarks that the fronds are 6—7 feet in height. 
3. Danza. Sm. 
Sori lineares, dorsales, transversi, paralleli, Capsule in se- 
ries geminatas arcte connatz, superne poro dehiscentes. 
Indusium superficiarium soros cingens. 
1. D. simplicifolia. Rudge, Ic. Pl. Guian. t. 36. 
Has. Guiana, Rudge. 
2. D. elliptica. Sm. in Rees’ Cyclop.— Hook. et Grev. Ic. Fil. 
t. 52.—D. geniculata, Rad. Fil. Bras. p. '15. t. 5. 
Has. West Indies, Jamaica, Sloane. Smith. St. Vincent, 
Rev. R. Guilding. Dominica, Dr. Kraus. Brazil, Raddi.— 
Sprengel has referred D. geniculata of Raddi to the D. 
nodosa, without, apparently, being aware of D. elliptica. of 
Smith, with which it exactly agrees. 
3. D. alata. Sm. in Act. Taur, v. . 5. p. 420.— Hook. et Grev. 
Ic. Fil. t. 18. 
Has. West Indies. St. Vincent, Rer. T wm Jamaica, 
Messrs. Lunan, Wiles, and Higson. Dominica, Dr. Kraus. 
4. D. nodosa. Sm. in Act. Taur. v. 5. p. 490.— Hook. et Grev. 
Ie. Fil. t. 51.—D. longifolia, aed Journ. Bie: oes 
p. 267. 
Has. West Indies. Jamaica, St. pait Martinique, 
