— 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, 3 U nat. size. 



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



Syn. Acrostichum Mertens ; Kaulf. Enum. Fil. 66. 1824. 

 — A. fr axini folium 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 — 4 dcm longa, pin- 

 nata cum impari. Pinnæ 8 — 1 1 jugæ , erecto - patentes, 

 lanceolato-elongatæ vel ovato-elongatæ , 10 — 15 cm longæ, 

 2 1 /* — 3 cm latæ, superiores sessiles, inferiores petiolo 1 — l 1 /^ 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 marginem currentes 

 sed non prominulæ et vix crassiores quam venulæ tertiariæ. Maculæ 

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

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

 liter prolongatæ ; venulæ exteriores liberæ interdum apicibus incrassatis 



Botanisk Tidsskrift. 26. Bind. 19 



