FLORA OF THE ISTHMUS OF P.INAMA. 231 
1060. GoxioPHLEUiuM neriifGlium, J. Sm. 1. c. p. 57 .--Polypodium n€riifolium,\V\M. 1. c. p. 194. 
Southern Darien. 
Tumaco (Sccmaiin), Jamaica ("Wiles), Trinidad (Aldridge), BrazU (iliers), and other parts of Tropical 
America, assuming various aspects. — v. v. Hort. Kew, 
lOGl. GoNioPHLEBiUM latum, J. Sm.^PoIypodium iaium, Radd. Bras. Fil. t. 28, Link. En. Fil. 
p. 129. Southern Darien. 
Erazil (Eaddi). 
Most authors place this as a synonym of Pohjpodium latipes, Lang, et Pisch., but it appears to me to 
be a distinct species. 
1062. GoxioPHLEBixiM distuns, J". '&m.—Polypodmm distam, Radd. Bras. Fil. t. 31. Southern 
Darien. 
Brazil (Miers), British Guiana (Sehomhurgk) .—y. v. Hort. Kew.. 
1063. Pleopeltis hjcojjodioides^Vre^^l.c. p. \^Z. —Poly podium lycopodioides, Linu.,"\\'illd. 1, c. 
p. 148. River Chagres, on trees. 
Jamaica (lleward, AVilson, Purdie). 
1064. Pleopeltis percussa, Hook, et Grev. Ic. Fil. i. t. 47.— Presl, 1. c. p. VdZ.—Polypodmm 
percussum, Cav. Willd. 1. c. p. 151. Southern Darien, on trees. . 
St. Catharine Island, Brazil (Barcky), British Guiana (Schomburgk), Tumaco (Seemann).— v. v. 
Hort. Kew. 
The specimens collected at Tumaco, bearing the number 988, have the same aspect as my specimens 
of P. stiymatica of Presl, which I consider to be only a phase of P. percusm. 
r 
1065. Campyloneurum repem, Presl, 1. c. p. 190. — Polypodium repens, Sw., AVilld. 1. c. p. 154. 
Southern Darien. 
Jamaica (Wiles). — v. v. Hort. Kew. 
1066. CAMPYLONErRUM PhyllUidis, Presl, 1. c. p. 190. — Polypodium Phyllitidis, L., Willd. 1. c, 
p. 157. Woods near Panama. 
Jamaica (Heward, Wiles, Wilson). — v. v. Hort. Kew. 
1067. CAMPYLOXEURUii iminersuiUf J. Smith, MSS.; frondibus simplicibus lauccolatis acumi- 
nato-caudatis basi attenuatis coriaceis marginatis supra impresso-punctatis, costis utrinquc clcvatis, 
venulis immcrsis obscuris, soris inter venas oblique biscrialibns. — Frondes l-l^ped, alta, 1^-2 uncias 
latce. Bay of Utria, Darien. 
Galapagos (Lieut. Wood). 
The readiness with which new species are created by several pteridologists, makes me hesitate before 
venturing to add another to the list, for without the aid of authentic specimens or reference to good figures 
it is often difficult to determine from description alone wliat plant is really meaut. In the present genus 
the general features of the so-called species are so very much alike, that the words used to describe one 
are in many cases quite applicable to others, the species varying merely in degree, as to length, breadth, 
texture, etc. The differences in the anastomosing of the veins would appear to indicate distinctions, but 
I have observed that uniformity is not the rule ; fronds of the same individual plant., and even different 
parts of the same frond, are observed to vary in the more or less branching and anastomosing of the veins J 
so that I fear that even that character is of little value for specific distinctions. 
