PITTIER—PLANTS FROM COLOMBIA AND CENTRAL AMERICA. 461 
lanceolatum, but it is is by no means certain that they correspond to his 
Venezuelan type. They can be distinguished easily from P. ligustrinum by 
the long straight spines, the subulate interpetiolar stipules, and the silky gray 
pubescence of the flowers. In the flowers the only definite characters, besides 
the pubescence, seem to be the length of the calyx, the shortness of the corolla 
tips, and the hairiness of the ovary. The corolla varies in length from 5 to 
6 mm.; the ovary is either sessile or stipitate; and the length of the style 
varies from 9 to 17 mm. There are included here specimens with shorter 
stipular spines, directed upward, which, however, agree with the description 
in their other characters. 
9. Pithecollobium ligustrinum (Jacq.) Klotzsch; Benth. Trans. Linn. Soc. 30: 
571. 1875. 
“ Mimosa ligustrina Jacq. Fragm. Bot. Illustr. 29. pl. 32. f. 5 1800-1809.” 
Inga ligustrina Willd. Sp. Pl. 4: 1007. 1806. 
A tree 5 to 12 meters high, the trunk up to 35 cm. in diameter; bark smooth 
or rimose on the trunk, densely punctate on the branchlets. 
Leaves bipinnate, the basal stipules spinescent, straight, acute, 4 to 5 mm, 
long; petioles glabrous or puberulous, canaliculate, the main one 0.5 to 3 cm. 
long, with a discoid sessile apical gland; pinnae unijugate, the interpetiolar 
stipules acute, broad and short, the secondary petioles 0.4 to 1 cm. long, with 
a smaller sessile cuplike apical gland; leaflets unijugate, sessile, oblique-oblong 
or lanceolate, obtuse or rounded at the apex, 2 to 6.5 cm. long, 1.2 to 3 cm. 
broad, the outer half rounded and the inner half cuneate at the base, the upper 
face light green, glabrous and nitidulous, the lower face paler, glabrous except 
for a small hairy spot at the base on the inner side of the costa; venation 
reticulate, prominent on both sides. 
Racemes axillary or paniculate at the ends of the branchlets, the rachis 
5 to 8 em. long, slender, pubescent; bracts very small, furfuraceous, caducous ; 
bractlets shorter than the calyx, deciduous; flowers sessile, white, numerous; 
calyx tubular, 2 mm. long, irregularly 5-toothed, minutely pubescent, corolla 
tubular-campanulate, 5.5 mm, long, minutely pubescent, the lobes about 2 mm. 
long, ovate-lanceolate; stamen tube inclosed or short-exserted; pistil 6 mm. 
long, the ovary sessile, pubescent, ovoid, 1.5 to 2 mm, long, about 10-ovulate, the 
style minutely puberulous. 
Legume subterete, glabrous, 8 to 12 cm. long, straight or curved, dehiscent, 
the valves becoming twisted; seeds compressed, rounded, black, half covered 
with a white aril. 
Type from Caracas, Venezuela. The above description is based upon my 
specimens collected between Valencia and Maracay, Venezuela. 
SPECIMENS EXAMINED: 
Mexico: Las Salinas, Michoacfn, altitude 20 meters, flowers, May 9, 1889, 
Langlassé 151. Rosa Morada, Tepic, flowers, June 23, 1897, Nelson 
4358. Tlacotalpam, Veracruz, flowers, May 21, 1894, Nelson 499. 
Acaponeta, Tepic, flowers, June 25, 1897, Rose 1470. Culiacén, Sinaloa, 
flowers and fruits, November 11, 1904, Brandegee. 
GUATEMALA: San José de Guatemala, on the Pacific coast, flowers, July 
26, 1860, Hayes. 
CoromBraA: Santa Marta, near sea level, flowers, August, H. H. Smith 104. 
VENEZUELA: La Victoria, Aragua, altitude 600 meters, flowers, May, 1898, 
Jahn 218. Between Valencia and Maracay, Carabobo, flowers, Jan- 
uary 31, 1918, Pittier 7725, Near Colonia Tovar, Fendler 1875. 
Island of Margarita, at El Valle, flowers, July, 1903, Miller & 
Johnston 38,121,242. 
