54 
tinged with purple, especially the inner which are successively 
much longer, lanceolate, obtusish, straight, concave, thick and 
rigid; pappus 4 mm. long, r ather copious, fine, white; corolla 
bright purple, the tube infundibular, slender, 3 mm. long the obes 
narrow, 1.5 mm. long; style-branches purple; akene Wow espe 
hispid, 2 mm. long, E mm. broad at the apex, tapering to .25 m 
at the base. 
Between Mapiri and Tipuani, July-Aug., 1892 (1554). 
VERNONIA TRIXIOIDES Sp. n. 
(Paniculatae.) Apparently erect and sub-simple, rather slender, 
paniculately branched at the summit, glabrous except the inflor- 
escence, the stem brown, finely many-angled, the branchlets of 
the inflorescence green, very strongly few-angled; petioles 1-2 
cm. long, EY a the base somewhat dilated; blades 
about 1.5 dm. g, 5-6 cm. broad, lance-ovate with rounded 
ua ig so aeu inate ind acute apex and serrate set ap with 
distant small strongly appressed spinulose teeth; green, mem- 
ponaesous Dien fe on not prominent, faintly reticulate, the prima- 
` ries about IO pairs, moderately curved; panicle naked except for a 
few small subulate bracts, several dm. high. 2—3 dm. broad, open, 
the branches at about 45?, slender; peduncles slender, .5—1.5 
hemispherical-campanulate, the bracts in 5 or 6 series, appressed, 
ovate, abruptly short-acuminate and pungent, I-nerved, slightly 
concave, green with yellowish margin, 'puberulent t and ciliate ; 
pappus- -bristles unequal, 6-9 mm. long, copious, fine, white, acute, 
minutely scabrous, the outer similar, 1% to 14 as long; corolla 
bright purple, the tube 7 or 8 mm. long, the limb 4 mm. long; 
akene dark brown, 2 mm. long, strongly 8-or 10-costate, the ribs 
densely white-bearded. 
Mapiri, July-Aug., 1892 (1484). 
VERNONIA ROBUSTA Sp. n. 
(Lepidoploa scorpiideae foliatae axillares.) Stem stout and 
coarse, much and widely branched, the branchlets thickish but 
weak, elongated, strongly ascending and sub-drooping at the ends, 
flexuous, canescent; petioles flat, very short and nearly as broad, 
the blades (lower not seen) 7-10 cm. long, 3-5 cm. broad, 
the midrib, 8—10 pairs of primaries, and few secondaries very prom- 
inent, coarsely reticulate ; floral leaves similar, 14 to 14 as pod 
heads 2-3 cm. apart, solitary i in the axils, very large, about 2 
