98 46 



5. var. tarapotensis (Hook.). 



Syn. Nephrodium tarapotense Hook. spec. lil. 4: 107. 1862. 



A form with piiinæ resembling in shape exactly those of D. Karstenii, with 

 which Mettenius identified it; it differs from that species by more veins (10 — 12 

 to a side) and lack of articulated hairs on veins and costæ beneath; from typical 

 D. submarginalis it differs by its very obtuse segments. 

 Peru: Mt. Campana, prope Tarapoto, Spruce nr. 4016 (Kew!). 



6. var. Lagerheimii (Sod.). 



Syn. Nephrodium Lagerheimii Sodiro, Cr. vase. quit. 252. 1905. 

 Dryopteris Lagerheimii C. Chr. Ind. 273. 1905. 



Large; stipe and rachis very scaly; scales of the stipe below about 5 cm long, 

 those of the costæ beneath numerous and much broader than those of f. caripensis. 

 Leaf 1 m long, pinnæ 20 cm long by 3 cm broad; segments rather falcate, finely 

 toothed at the outer part; veins 15 — 17-jugate; indusium often present. In general 

 habit not unlike D. refulgens. 



Ecuador: Andes quitenses, Lagerheim, comm. Sodiro IS, C) — Spruce nr. 5294 (CC, H, L, RB, S). 

 Colombia: Cune, 1100 m, Lindig nr. 295 (B). 

 Peru: Ruiz nr. «8 (Bi. 



35. Dryopteris Karstenii (A. Br.) C. Chr. comb. nov. — Fig. 6. 



S y II. Aspidium Karstenii A. Braun, Ind. sein. bort. Berol. app. 1857: 3. 



Type-specimen in B!, cultivated in Hort. Berol. and raised from spores of 

 plants collected by Karsten in Venezuela. 



Closely related to Ü. submarginalis resembling it in the reddish scales, which 

 form a tuft at the base of the Stipes, but receding from it in the direction of 

 D. falciculata. Compared with D. submarginalis the main characters of D. Karstenii 

 are the following: Middle-sized; stipe 3' -■ dem long, like rachis clothed with hairs, 

 hair-shaped scales and broader scales. Lamina 5 — 6 dem long, 2 — 2^/2 dem broad; 

 largest pinnæ 10—12 cm long, 2 — 2' 4 cm broad; both sides throughout with short, 

 scattered, reddish hairs, costæ beneath furnished with hairs and scales and with 

 all intermediates between these two kinds of Iricliomes (fig. 3'). Segments close, 

 slightly oblique, entire, broadly obtuse and often emarginate, upper basal one often 

 quite free and a little shortened. Veins 6 — Sjugate. sori medial or a little supra- 

 medial furnished with a persistent, ciliate indusium. 



— "Truncus erectus sensim supra terrain elatius demum fere pedalis una cum 

 phyllopodiis laxius dispositis paleaceus" (A. Braun 1. c), while the caudex of D. cari- 

 pensis is described thus: "truncus erectus supra terrain elevatus demum semipedalis 

 et altior una cum phyllopodiis satis confertis dense paleaceo-lanatus paleis valde 

 elongatis (fere poUicaribus) linearibus in piluni excurrentibus" (A. Braun 1. v. pag. 2). 



From Ü. falciculata and D. nigrovenia our species differs by the shape and 

 structure of the scales. 

 Venezuela: Moritz nr. 209, Lansuerg, Gollmek, ilii, Puerto Cahello, Karsten (C). 



