PITTIER—REVISION OF THE GENUS INGA. 197 
absence of the flowers this can not be decided at present. The conspicuous, per- 
sistent stipules would lead one to think that the bractlets also remain through 
anthesis, in which case the tree would range along with I. lindeniana among the 
Calocephalae. 
Inga feuillet DC., renamed J. cwmingiana by Bentham, should also 
take its place in this series and not, as Bentham had it, among the 
Euingae, from which it is excluded by its flat, narrowly marginate 
pods. 
This species seems to be the pacai par eacellence of the Peruvians, 
and it is said to be found in almost every garden at Lima. The name 
“ pacai” is in Peru and Bolivia the popular generic name for Inga, 
corresponding to the “ guamo ” of Colombia, and “ guavo” of Central 
America. It is used in compound nouns to designate many of the 
native species. Thus, /nga feuzllet is, according to a verbal communi- 
cation of Mr. O. F. Cook, the “ pacai de mono” or “monkey pacai” 
of Santa Ana, in the Urubamba Valley. 
Notwithstanding its reputation as a favorite fruit of the Peruvians 
the species is imperfectly known, so that the following attempt at a 
fuller description than those of Feuillée, de Candolle, and Bentham 
will not be out of place here. 
Inga feuillei DC. Prodr. 2: 433. 1825. 
A tree with rounded-depressed, spreading crown, the young branchlets 
fulvous-pubescent, covered with numerous white lenticels. 
Rachis of the leaves fulvous-hairy, narrowly winged, 14 to 25 cm. long, the 
petiolar part wingless, 2 to 3.5 cm, long; stipules not seen, caducous; glands 
small, subsessile, inconspicuous; leaflets 4 or 5-jugate, oblique, coriaceous, the 
petiolules not over 2 mm. long, thick, fulvous-hairy, the blades oblong-elliptic, 
rounded at the base, acutely acuminate at the apex, reticulate, sparsely hairy 
or glabrescent above, the costa, veins, and venules more or less sparsely hairy 
beneath, the blades of the basal pair 6 to 10 cm. long, 4 cm. broad, those of the 
terminal pair 10 to 20 cm. long, 7 to 9 cm. broad. 
Inflorescences solitary in the axils of the leaves, the peduncles stout, at first 
fulvous-hairy, later glabrescent, 6 to 11 cm. long; floral heads subelongate ; 
flowers sessile; bracts linear, shorter than the calyx, subpersistent; calyx 
tubular, fulvous-tomentose, 8.5 to 11 mm. long, persistent, the teeth short, acute ; 
corolla fulvous-hairy, silky, 17 to 19 mm. long; stamens not seen. 
Legume flat, 30 to 65 cm. long, at first densely rufous-pubescent, the margins 
rufous-hairy, dilatate, and obscurely bisulcate. 
Peru: Lima, Feuillée, Cuming 980, etc. Santa Ana, alt. about 900 meters, 
young fruits, June 29, 1914, Cook & Gilbert 1573. 
Bentham placed this species in section Euinga, near Inga spuria, but it 
obviously does not belong there. The tree is said to be a favorite in the gardens 
of Lima, not only because of its shade, but also on account of the succulent, 
sweet pulp which surrounds the seeds. 
36213°—16——3 
