594 Underwood: American ferns 



Pinnae 4-7 cm. long; sporophyllary pinnae 



under 2 mm wide. **• $- ^esttta. 



Pinnae cuneate at base (acute or obtuse). 

 Pinnae 4-8 cm. long. 



Pinnae 20-25 -jugate ; sporophyllary pinnae 

 nearly sessile ; scales of the rootstock 

 long-hairy ciliate. I. & angusta. 



Pinnae 10-15-jugate ; sporophyllary pinnae 

 stalked; scales of the rootstock smooth. 10. S. sorbifolia. 

 Pinnae 10-15 cm. long, tapering to a long-acu- 

 minate apex. 

 Sporophyllary pinnae 5-6 mm. wide, 9 cm, 



long, long-stalked. 7- s - Maxoni. 



Sporophyllary pinnae not over 2 mm. wide, 



10-12 cm. long, short-stalked. 9. S. recurvata 



Wide-climbing 



1. Stenochlaena angusta sp. nov. 



on trees. Roostock rather slender, 4-8 mm. 

 thick, densely covered at the apex with pale, narrowly lanceolate, 

 long-ciliate scales, becoming naked below ; leaves scattered, nar- 

 row, tapering at both ends, 45-60 cm. long, with a short stalk 

 (6-8 cm.) which is densely covered below with f scales like those 

 of the rootstock, and with still narrower scattered fibrils which ex- 

 tend up the rachises ; pinnae 20-25-jugate, obtusely cuneate at 

 base forming a very short stalk, 6-7 cm. long, 10-12 mm. wide, 

 the margins finely and deeply undulate, tapering at the more or 

 less falcate apex into an acuminate point ; veins simple or once 

 forked, rather close, with 1 1 — 1 5 intercostal spaces to 1 cm.; 

 sporophyls slightly shorter than the leaves, the pinnae 22-25-jugate, 

 55-8 cm. long, 3-4 mm. wide, obtuse at the base with a short 

 stalk, tapering gradually to the apex. [Figure 6.] 



Colombia : Jordan, Prov. Santa Marta, H. H. Smith ioji 

 (type). 44 Creeping on tree trunks to 15 feet or more. Rare in 

 deep forest, 1 200-1400 feet." 



To the same species we should refer Punch 774. collected in 

 1845 (P) * and Spruce 1556 collected at Tarapoto, Peru (K). 



Al 



more or less fragmentary recent collections from Bolivia : Lower 

 Rio Cocos, Williams upo; San Raphael, Williams nSp; and 

 more doubtfully the juvenile forms, Isapuri, Williams 1203. 



* Unless otherwise stated, specimens cited are in the collections in the New York 

 Botanical Garden. For convenience other collections are marked with an initial : K 

 Kew, B = Berlin, P = Paris, Pr = Prague, V = Vienna, etc. 



