New Species op South American Plants 67 



Pistillate flowers. — Body of ovary sub-rotund, 2 or 3 mm. 

 broad, the narrow, scarious wing extended at the top on one 

 side almost horizontally into a lanceolate obtuse process about 

 as long as the ovary. Perigone segments apparently only 2, 

 unguiculate, oblanceolate, obtuse, little longer than the styles, 

 widely spreading. Styles 3, bifid almost to the base, the branches 

 stout, very crooked. Immature pods with the body slenderly 

 and crookedly 6-nerved on each side, the narrower wing about 

 a third as wide and crossed by 6 strong nerves which anastomose 

 at the thickened margin, the larger wing produced into a slightly 

 ascending inequilaterally ovate process with rounded summit, 

 and about 3 times as wide as the body, strongly and crookedly 

 many-nerved. 



"Common on rocks in damp shady places at 800-2000 feet, 

 occasionally in deep glens as low as 400 feet. Specimen from 

 Agua Dulce Road, about 1000 feet, Nov. 21." (Herbert H. 

 Smith, Colombia, No. 1264.) 



Begonia subcostata. 



Glabrous, except for a few very small short and thick white 

 spiculate hairs on the young leaves. Branches erect or strongly 

 ascending from a creeping base, thick but weak, conspicuously 

 (about 10) costate and sulcate, pale-brown, or slightly reddish, 

 the intemodes 4 to 6 cm. long. Stipules 3 mm. long, much 

 broader, extremely thin, ovate, with rounded summit, very 

 finely nerved. Petioles slender, erect, 2 to 4 cm. long, the 

 blades 4 to 8 cm. broad, lance-ovate, very inequilateral, with 

 rounded base and long- acuminate and attenuate summit, coarsely 

 serrate-dentate, both teeth and sinuses short, broad and acute, 

 the former bearing one or more small, secondary teeth; larger 

 side of the blade with two ribs or strong nerves and a third 

 lesser one at the base of the outer, the smaller side with a single 

 straight nerve. Flowers few, on slender and weak short pedi- 

 cels. 



Staminate Flowers. — Sepals 2, from 8 to 10 mm. long, 12 

 to 15 mm. broad, with regularly rounded summit, very thin. 

 Stamens about 20, on short, broad filaments distinct to the 

 base, the anthers about 1.5 mm. long, obovoid, with a broad, 

 rounded hyaline summit. 



Pistillate Flowers. — Perigone segments 6, the two outer 

 reddish, lanceolate, scarcely as long as the four inner, which 

 are white, of about the same length as the ovary, and oblanceo- 

 late, with rounded summit. Ovary brown, triangulate with 

 truncate summit, slightly longer than broad, ribbed and winged, 

 one wing broader than the other. Styles 3, distinct, two-thirds 

 the length of the petals, 2-fid nearly to the base, and bearing 

 two wing-like appendages at the base of the branches, the latter 

 stout, recurved and with capitate stigmas. Pod triangulate. 



