30 New Species of South American Plants 



Lotoxalis manihotoides. 



Petioles, lower leaf-surfaces, peduncles, etc., minutely 

 puberulent. Branchlets stout, roughened with large leaf-scars. 

 Leaves crowded at and near the summit, the petioles 7 to 15 

 cm. long, slender, channelled above. Stipules not apparent. 

 Leaves pinnately 3-foliolate, the leaflets sessile; lateral leaflets 

 7 to 10 cm. long, 4 to 6 cm. wide, inequilateral, ovate, acuminate 

 and acute, rounded to sub-truncate at the base, very thin, 

 bright-green; terminal leaflet 3 to 5 cm. distant from the lateral, 

 a half larger than the latter, of similar form but equilateral 

 and slightly narrower; venation sparse and slender, somewhat 

 prominent beneath. Peduncles slender, angled, as long as 

 the petioles or longer, bifurcating, the branches about i cm. 

 long, densely nodose with the persistent pedicel-bases, which 

 are very short and broad, with concave summit. Mature bud 

 ovoid, obtuse, 4 mm. long. Stamens connate at the base, un- 

 equal, the anthers oblong or oval, dorsifixed and versatile. 

 Ovary oblong, muricate. Styles 3, stoutish, united at the base. 



Vic. Cochabamba, Bolivia, 1891. (M. Bang, No. 2059). 



Xanthoxalis unduavensis. 



Tops of the young stems ferruginous-tomentose, other por- 

 tions more or less pilose. Stems apparently reclining, much 

 elongated, the base woody. Stipules i cm. long, lanceolate, 

 acuminate, brownish, hyaline, delicately nerved, adnate to the 

 petiole, for two-thirds of their length. Petioles to 6 cm. long, 

 jointed at the junction with the stipules, erect-spreading, fili- 

 form, striate, pilose, carinats below on the adnate portion. 

 Leaflets three, 1.5 to 3 cm. long and 12 to 20 mm. broad, sub- 

 sessile, inequilaterally obovate, broadly and shallowly emargin- 

 ate, with the lobes unequal and obtuse, sparsely or rather densely 

 ferruginous-pilose on both surfaces, ciliate, the venation not 

 conspicuous, the secondaries about 4 on a side, very slender, 

 crooked. Peduncles very long, mostly much exceeding their 

 leaves, filiform, axillary and crowded at the summit, cymosely 

 branched, the bracts 3 to 5 mm. long, attenuate from the base, 

 hyaline, the pedicels filiform, to 2 cm. long. Calyx i cm. long, 

 the sepals lanceolate, attenuate, hyaline, 3-nerved. Corolla 

 12 or 14 mm. long, yellow. Longer stamens 5 mm. long, con- 

 nate for nearly half their length, the tube hyaline, lo-nerved. 

 Ovary 3 mm. long, oblong, the styles 5, filiform, 5 mm. long, 

 distinct to the base, the stigmas capitate, rather large. Mature 

 pod not seen. Immature seeds brown, oval, compressed, 

 minutely beaked, somewhat tuberculate. 



"Unduavi, Bolivia, 3,300 M. altitude, Nov. 1910." (Otto 

 Buchtein, No. 620.) No. 621 from the same locality, is the 

 same, but more abundantly flowering. 



