109 161 



var. brasiliensis n. var. 



A typo differt: slipile spinis acutis instructis; rachi costisque subtus pilis longis 

 patentibus vestitis. 



All the Brazilian specimens seen differ from the type by these two charac- 

 ters; otherwise they fully agree. 



Brazil: Sta. Catharina, Joinville, O. Müller (R) — Schwacke nr. 13320 (C) — Am Rio Comprido bei 

 Ignape, Wettstein u. Schiffner IX. 1901 (Herb. Mus. Wien). 



176. Dryopteris polyphlebia n. sp. — Fig. 19. 



Syn. Polypodium decussatum Sod. Cr. vase. quit. 291. 1893. 



Type from Ecuador, leg. Sodiro (B, type specimen, C). 



I agree with Sodiro in considering this species distinct from D. decussata, which 

 Sodiro described as a new species (P. velulimim) . It resembles it in most 

 characters but may be distinguished by the following 



Very large (I have not seen a complete frondi; pinnæ up to 45 cm. long by 

 7 cm broad with the costa beneath more than 2 mm broad. Pinnæ oblong-ellipti- 

 cal or lanceolate, shortly stalked and narrowed towards the base, in the specimens 

 seen without glands. Segments close with parallel edges, their apex equally rounded 

 to both sides, 3' n cm long by 7 mm broad; veins 50 — 60 to a side. Sori a little 

 above the middle of the vein, oblong. — Texture coriaceous, fragile, colour grey- 

 green ; rachis 8 mm broad, castaneous as young very finely puberulous, soon 

 glabrous. 



Besides the specimens from Equador I have seen the following from Costa 

 Rica: Carillo, Pittier nr. 2474 (B, C, W) — Talamanca, Tonduz nr. 9453 (C, W). 



Subgenus 6. Stciropteris C. Chr. 

 Biolog. Arbejder tilegnede Eug. Warming pag. 81. 1911. 



Rhizome wide-creeping, ligneous, scaly at the apex; scales firm, castaneous 

 or dull-brown, entire but generally with some few short, acute hairs on the mar- 

 gins. Lamina deltoid or somewhat narrowed below, rarelj' (in D. deltoidea) with 

 several pairs of auriculiform pinnæ, firm to rigidly coriaceous, of a characteristic 

 greyish or brownish colour, more or less pubescent by simple hairs, which partly 

 are short and unicellular, partly long and pluricellular. In most species both kinds 

 of hairs are found intermixed on rachis and costæ beneath, in others only one 

 kind is found; seldom the leaf is quite glabrous. Lamina pinnatifid, or, as a rule, 

 bipinnatifid with sessile or shortly stalked pinnæ, in most species with a distinct 

 acute aërophore at the base. Veins simple, often raised above, those of the basal 

 pair running out to the sinus, more or less connivent and with a cartilagineous 



