SOUTH AMERICAN PLANTS. 43 
divided into acute lobes, by several deep incisures, sinuate 
at base; they are nearly glabrous. I did not observe this 
remarkable dissimilarity in the size of the upper and lower 
leaves in any of the species I found in the Organ Mountains, 
nor has this been noticed by the authors who have described 
the other species, if we except P. pendula where some of the 
leaves are simple and cordate at the base, while others are 
larger, and divided into 3 or 5 segments, as shown in the 
figure of Ruiz and Pavon above quoted. 
15. Pionandra Hartwegii (n. sp.) ;—fruticosa : foliis geminis, 
altero minori, 5-nerviis, cordato ovatis, integris, supérne 
lucidis, parce pilosis, infra ferrugineo-pruinoso-punctatis ; 
racemis e bifurcatione subscorpioideis, folio multo longiori- 
bus.—Columbia (Hartweg, n. 1297) v. 8. m herb. Hooker. 
Stems round, dark brown, subpubescent: leaves 4% in. 
long, 2% in. broad, on a petiole 17 in. length, the smaller one 
2% in. long, 12 in. broad, ona petiole 1 in. long; raceme 
pubescent, 8} in. long; pedicels articulated, 1} to 14 in. long; 
calyx small, 5-gonous, glabrous, lobes short, obtuse, with a 
very small tooth in the apex; corolla with linear, lanceolate 
segments, an inch long, obtuse at the apex, smooth with 
floccose margins; anthers 2-celled, very long, equal, linear, 
erect, somewhat scabrous, opening by an apical pore, and by 
a lateral fissure in each cell: style obtuse; stigma clavate. 
16. Pionandra coriacea, (n. sp.) :—fruticosa, fohiis geminis, 
magnis, glabris, valde coriaceis, cordato-ovatis, 5-nerviis, 
altero minori, supra punctulatis, infra pruinosis : racemis 
brevibus, scorpioideis; floribus secundis, pedicellis. arti- 
culatis, approximatis; corolla tubo brevi, laciniis lanceo- 
latis: antheris linearibus, erectis, connectivo crasso.— 
Peruvia (Mathews, 1971) v. 8. in herb. Hooker. 
The leaves of this species are remarkably thick, opaque and 
coriaceous, about 8 inches. long, 5 in. wide, with a petiole 
2 in. long, the smaller ones 5 inches long, and 34 in. wide, 
the petiole being the same length as the basal lobes. 
17. Pionandra Cajanumensis. Solanum Cajanumense, H.B.K. 
3.47 :—fruticosa, ramulis hirsutis: foliis solitariis, subro- 
G 2 
