FLORA OF SOUTH AMERICA. 199 
appears to me to be only a more linear and narrow form of 
the first. 
735. A. integerrimum, Spren. Syst. 4. p. 81. A. fale. 
Kunze in litt. 1840. British Guiana, Schomburgk, n. 451, in 
some sets. 
736. A. salicifolium, Linn. Willd. l. c. p. 313. Plum. AL. 1. 
60. British Guiana, Schomburgk, n. 451, in some sets. 
737. A. cuneatum, Lam. Willd. l. c. p. 344. British 
Guiana, Schomburgk. n. 340. 
Tribe ASPIDIE®. J. Sm. 
738. Cyclodium confertum, Presl. pterid. p. 85. Aspidium 
confertum, Kaulf. En. fil. p. 232. Hook. et Grev. Ic. fil. t. 121. 
British Guiana, Schomburgk, n 316 and 459, in part.—Not 
having seen perfect specimens of this fine fern till now, I 
had hesitated adopting Cyclodium as a genus in my original 
paper in the previous volume of this Journal. The exami- 
nation of the present specimens has now induced me to adopt 
it. This genus is distinguished from Nephrodium principally 
by the indusium being orbicular, and the fertile fronds con- 
tracted, therefore my Nephrodium acrostichoides (Cuming, 
^. 194) is a species of Cyclodium. 
739. Polystichum abbreviatum, J. Sm. Aspidium abbrevi- 
atum, Schrad. (according to Kunze in litt. 1841.) British 
Guiana, Schomburgk, n. 135. 
740. P. denticulatum J. Sm. Aspidium denticulatum. Sw. 
Willd. 1. c. p.272. Roraima, British Guiana, Schomburgk. 
741. Nephrolepis ensifolia. Presl. Aspidium ensifolium. 
Sw. Willd, 1. c. p. 230. Schk. crypt. t. 32. A. rufescens. 
Schrad. Splitgerber in Tijdscrift. 7. p. 415. British Guiana, 
Schomburgk, n. 444. 
742. N. exaltata. Schott, Gen. fil. t. 3. Aspidium exal- 
fatum. Sw. Willd, l c. p. 229. British Guiana, Schom- 
burgk, n. 303. 
743. Oleandra pilosa. Hook. Gen. fil. t. 458. Aspidium 
