PITTIER—REVISION OF THE GENUS INGA. 201 
mucronate at the apex, glabrescent on both sides, the costa, veins, and venules 
more or less hairy and prominent beneath, the blades of the inferior pair 7.5 to 
10 cm. long, 4.5 to 5 cm. broad, those of the terminal pair 18 to 15 cm. long, 
8 to 9.7 cm. broad. 
Inflorescences single, axillary or terminal; peduncles angulate, striate, 1.5 to 
8.5 cm. long, sparsely hairy; flower heads ovoid, the rachis 1.5 to 2.5 cm. long; 
flowers sessile; bractlets linear, acute, hairy, 1 to 1.5 cm. long, persistent; calyx 
broad, irregularly cleft, sparsely hairy, 7 to 8 mm. long; corolla tubular, broad- 
ened at the tip, silky-pubescent, 13 to 15 mm. long, the lobes short and broad. 
Legume (fide Bentham) glabrous, thick, 15 cm. long and over, 3.8 cm. broad, 
the margins very prominent. 
Panama: Near Cruces, Canal Zone, in woods, Seemann 407 (specimen of 
the type collection in the Gray Herbarium). Bismarck, above 
Penonomé, Province of Coclé, leaves only, March 19, 1908, Williams 589. 
My measurements of the flowers are slightly less than those given by 
Bentham. The calyx, like that of Inga spectabilis, does not seem to open by 5 
short teeth, as in most species, but to burst irregularly under the pressure of 
the growing corolla. I have not collected this species or seen the fruit. 
Inga panamensis strikingly resembles I. pittiert Micheli, of the section Euinga, 
differing, however, in the shorter calyx and corolla and in the shape of the 
legume. 
With reference to J. lindeniana Benth., the characters of the fruit were not 
given in the original description, and those given later may belong to a distinct 
species. Bentham’s diagnosis in the Revision seems to have been modified so 
as to cover several species, among them J. mucuna Walp. & Duchass. and prob- 
ably I. goldmanii. 
Series 7. WULPINAE. 
NEW SPECIES. 
Inga balaensis Pittier, sp. nov. 
A tree 10 meters high (Eggers), the young branchlets densely rufous-hispid. 
Rachis of the leaves narrowly winged, rufous-hispid, 10 to 11 cm. long, the 
petiolar part also winged from the base, 4.5 to 5.5 em. long, the wings narrower 
below the basal leaflets, 6 to 8 mm. broad; stipules ovate, acuminate, 1 to 2 em. 
long, 0.5 to 1 cm. broad, densely ferruginous-pubescent without, persistent ; 
leaflets 2-jugate, more or less oblique, petiolulate, membranous; glands small, 
long-stipitate, the stipels hispid, 4 mm. long or less; petiolules densely hispid, 
3 to 4 mm. long; leaflet blades broadly ovate, rounded, or slightly attenuate 
and subemarginate at the base, obtuse or abruptly short-acuminate at the apex, 
dull and glabrescent above, with hairy costa and veins, reticulate and glabrous 
beneath, with the costa and veins prominent and sparsely hairy, the blades of 
the basal pair 7.5 to 9 cm. long, 5 to 6 cm. broad, those of the terminal pair 
11 to 17 cm. long, 7 to 10.5 cm. broad. 
Floral spikes single or geminate in the axils of the upper leaves, the 
peduncles rufous-hispid, slender, striate, 7 to 9.5 em. long, the flower heads 
loose, subelongate; bractlets linear or narrow-obovate, 4 to 8 mm, long, hairy 
without, deciduous; flowers sessile; calyx tubular, broadening toward the apex, 
10 to 12 mm. long, striate, sparsely hairy, the teeth broad, obtuse, 3 to 4 mm. 
long; corolla tubular, gradually broadening to the apex, 21.5 to 23 mm, long, 
densely villous, the lobes acute, 2.5 to 3.5 mm. long; staminal tube included; 
pistil 5 to 5.5 cm. long, surpassing the stamens; ovary glabrous, depressed ; 
stigma clavate. 
Legume (immature) sessile, rounded at the base and apex, about 10 cm. 
long, 1.5 cm. broad, thin, densely hairy. 
