. Botanisk tidsskrift. Botany; Plants; Plants. — 289 — Guiana gallica: Sagot n. 776 (HB). Puerto Rico: Sinlenis n. 428 (HS), and more numbers, according to Urban: Symb. Antill. 4:26. 1903. Fig. 1. Pinna with somewhat irregularly serrated edges, *U nat. size. 2. Leptochilus serratus (Kuhn) G. Chr. — Fig. 2. Syn.: Chrysodium (Kuhn), Linnaea 36:63. 1869. — Acrostichum Bak. Syn. Fil. 524. 1874. I have not seen the original specimen of this species but in Herb. Berol. is to be found a sketch of Spruce's plant besides a single, small sterile frond. For a full description see Linnaea as cited. The sp
. Botanisk tidsskrift. Botany; Plants; Plants. — 289 — Guiana gallica: Sagot n. 776 (HB). Puerto Rico: Sinlenis n. 428 (HS), and more numbers, according to Urban: Symb. Antill. 4:26. 1903. Fig. 1. Pinna with somewhat irregularly serrated edges, *U nat. size. 2. Leptochilus serratus (Kuhn) G. Chr. — Fig. 2. Syn.: Chrysodium (Kuhn), Linnaea 36:63. 1869. — Acrostichum Bak. Syn. Fil. 524. 1874. I have not seen the original specimen of this species but in Herb. Berol. is to be found a sketch of Spruce's plant besides a single, small sterile frond. For a full description see Linnaea as cited. The species resembles very closely L. guianensis as to the venation and shape of the sterile pinnæ, but the veins are very inconspicuous, the substance of the frond being nearly intransparent, the number of the not-articulated pinnæ very small (3—5 on a side) and the rachis of the sterile leaf with the stipe above is winged. Hab. Peru via: Tarapota, Spruce N. 4123 (non vidi); Godet (HB). Fig. 2. Terminal pinna and rachis of sterile frond; after a sketch in Herb. Berol. of the original specimen, 3U nat. size. 3. Leptochilus serratifolius (Mertens) G. Chr. — Fig 3. Syn. Acrostichum Mertens ; Kaulf. Enum. Fil. 66. 1824. — A. fraxinifolium Presl, Del. Prag. 1:160. 1822 (non R. Br. 1810). — A. pervium Lindm. Arkiv för Bot. 1:254 tab. 8 fig. 7. 1903. Lamina folii sterilis ovato-elongata, 3—4dcm longa, pin- nata cum impari. Pinnæ 8—11 jugæ, erecto - patentes, lanceolato-elongatæ vel ovato-elongatæ, 10—15cm longæ, 21/*—3cm latæ, superiores sessiles, inferiores petiolo 1 — l1/^0111 longo petioiatæ, basi cuneatæ vel rotundatæ, versus apicem breviter acuminatæ, membranaceæ vel subcoriaceæ, glabræ, sed subtus ad costam squamis parvis, ovato-acuminatis, sub- Fig. 2. integris instructæ, raro subnudæ. Margo pinnarum subinteger vel undulato-serrato-crenatus, interdum manifeste serratus, versus apicem sæpe grosse, raro acute serratus. Costulæ fere ad marg
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