489 



Guiana gallica: Sagot n. 776 (HB). 



Puerto Rico: Sinlenis n. 428 (HS), and more numbers, according 

 o Urban: Symb. Antill. 4:26. 1903. 



Fiff. 1. Pinna with somewhat irregularly .•serrated eJge«, '■'U nat. size. 



2. Leptnchilus serratus (Kuhn) G. Chr. — Fig. 2. 



Syn.: Chnjsodinm (Kuhn), Linnaea 30:63. 1869. — 

 Acrostichiim 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 vi a: Tarapota, Spruce N. 4123 (non vidi); 

 Godet (HB). 



Fig. "■!. Terminal i)inna and rachi.s of sterile frond ; after a 

 sketch in Herb. Berol. of the original specimen. ' .» nat. size. 



3. Leptocbiius serratifolius (Mertens) G. Chr. — Fig 3. 



Syn. Acroatichum Meviens ; Kaulf. Enum. Fil, 66. 1824. 

 — A. fraxinifoUum Presl, Del. Prag. 1:160. 1822 (non 

 R. Br. 1810). ~ A. pervium Lindm. Arkiv tor Bot. 1:254 

 tab. S fig. 7. 1003. 



Lamina folii sterilis ovato-elongata, 3 — 4'''""Monga, pin- 

 nata cum im])ari. Pinnae 8 — 11 jugæ , erecto - patentes, 

 lanceolato-elongatæ vel ovato-elongatæ , 10 — Lö'^"' longæ. 

 2V4 — 3™' latæ, superiores sessiles, inferiores petiolo 1 — 1^/2*^"^ 

 longo petiolatæ, basi cuneatæ vel rotundatæ, versus apicem 

 breviter acuminatæ , membranaceæ vel subcoriaceæ, glabrae, 

 sed subtus ad costam squamis parvis, ovato-acuminatis, sub- Fig. i.. 



integris instructæ, raro subnudæ, Margo pinnarum subinteger 

 vel undulato-serrato-crenatus, interdum manifeste serratus, versus apicem 

 sæpe grosse, raro acute serratus. Gostulæ fere ad marginem currentes 

 sed non prominulæ el vix crassiores quam venulæ tertiariæ. Maculae 

 costales altæ, subtriangulares, ceteræ biseriatæ — sæpissime 3 in serie — 

 exappendicuiatæ vel raro appendicem ferentes, 4 — 5 — 6 angulares, radia- 

 liler prolongatæ ; venulæ exteriores liberæ interdum apicibus incrassatis 



19 



