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LEGUMINOSAE 247 
2. P. echinatus Pers. Narra (Tag.); Naga (Vis.). 
Very similar to the preceding, differing in that part of the pod opposite 
the seeds being covered with slender, spreading, straight spines. 
A few trees in Singalon, fl. June-July; widely distributed in the Phil- 
ippines. Celebes. 
34. DALBERGIA Linnaeus fils 
Climbing shrubs or erect trees. Leaves odd-pinnate; leaflets alternate. 
Flowers small, numerous, in terminal or axillary panicles. Calyx cam- 
panulate, with 5 short teeth. Corolla exserted; standard broad; keel obtuse, 
its petals joined at the tip. Stamens 9 or 10, monadelphous, or the sheath 
slit down one side. Ovary stalked, few-ovuled; style short, curved, gla- 
brous. Pod oblong or strap-shaped, usually thin and flat, 1- to 4-seeded, 
indehiscent, sutures not winged. (In honor of N. Dalberg, a Danish phys- 
ician.) ; 
A large genus of wide distribution in the tropics, 6 or 7 in the Philippines. 
1. D. ferruginea Roxb. 
A climbing shrub reaching a height of several meters, the younger parts 
brown-pubescent, often becoming nearly glabrous when old. Leaves 10 to 
20 cm long; leaflets 15 to 21, elliptic-oblong or oblong, apex rounded or 
retuse, base slightly oblique, 1.5 to 4 cm long. Panicles axillary and ter- 
minal, forming a leafy inflorescence. Flowers pink, white, or yellowish, 
about 5 to 7 mm long. Pods 3 to 7 cm long, 1.5 cm wide or less, 1- to 3- 
seeded, stalked, oblong to strap-shaped, the parts opposite the seeds thick- 
ened, the other parts thin. 
In thickets, Masambong, fl. March—June; widely distributed in the Phil- 
ippines. Borneo to New Guinea and the Caroline Islands. 
35. PONGAMIA Ventenant 
Glabrous trees with odd-pinnate leaves, the flowers in axillary racemes. 
Calyx campanulate or cup-shaped, truncate or subtruncate. Corolla ex- 
serted, the standard broad, the keel obtuse. Stamens monadelphous, the 
upper filaments free nearly to the base. Ovary 2-ovuled; style incurved. 
Pod woody, flattened, oblong, indehiscent, not winged or thickened along the 
margins. (From its Indian name.) 
A single variable species. 
1. P. mitis (L.) Merr. (P. glabra Vent.). Balic-balic (Tag.). 
A tree 8 to 25 m high, glabrous throughout. Leaves 20 to 25 em long; 
leaflets 5 to 7, ovate to oblong-ovate, acuminate, 6 to 15 cm long, the 
terminal one larger than the others. Racemes in the upper axils, 15 to 20 
em long. Flowers numerous, purplish, pink or nearly white, about 1.5 cm 
long. Pod woody, glabrous, oblong, 5 to 7 cm long, 5 to 8 mm thick, shortly 
beaked at the apex. (FI. Filip. pl. 417.) . 
Along tidal streams and near the sea, fl. Oct., and probably in other 
months; throughout the Philippines in similar habitats. India to the 
Seychelles, Malaya, Australia, and Polynesia. 
36. DERRIS Loureiro 
Scandent or more rarely erect shrubs or small trees. Leaves odd-pinnate, 
the leaflets not stipellate. Inflorescence of axillary and terminal racemes 
or panicles. Calyx nearly truncate. Corolla much exserted. Stamens 
usually monadelphous or the upper one free. Ovary sessile, few-ovuled. 
