214 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Inflorescences paniculate at the ends of the branchlets, the spikes single or 
geminate in the axils; peduncles stout, densely ferruginous-velvety, 2.5 to 5 cm, 
long; bractlets linear, pubescent, 6 to 10 mm. long, caducous; flowers sessile; 
calyx stipitate or substipitate, ferruginous-hairy, 12.5 to 14 mm, long, the teeth 
broad-triangular, acute, 4 to 5 mm. long; corolla softly and densely villous, 
broad, 20 to 22 mm. long, the lobes ovate, acute, 5 to 7 mm, long; staminal tube 
included ; pistil 6.5 to 7 em. long; ovary glabrous, 1-sulcate; stigma clavate. 
Legume not known. 
Type in the Gray Herbarium, collected at La Paila, Cauca Valley, Colombia, 
flowers, March 17, 1853, by I. F. Holton (no. 1004). 
CoLomsBia: Near Buga, Cauca Valley, alt. 900 meters, flowers, July 25, 1881, 
Lehmann 779. Fusagasug4, Province of Bogot&, alt. 1,500 meters, 
Triana 1170. 
The specimens collected by Triana were distributed under the name Inga 
ornata Kunth, a species reduced by Bentham to J. ingoides (A. Rich.) Willd., in 
which the flowers are always pedicellate, the pedicel length varying from 2 to 5 
mm. In Triana’s plant as well as in Holton’s and Lehmann’s the calyx is short- 
stipitate but sessile. One of Holton’s specimens is labeled J. pachycarpa Benth., 
which is supposed to be the same as J. insignis Kunth. That species, however, 
has a tetragonous fruit, while the shape of the ovary in J. holtonii indicates a 
subcylindrical, many-sulcate legume. The general characters also show a 
eloser relationship with the species of the J. spuria group. 
Inga pauciflora Walp. & Duchass. Walp. Ann. Bot. 2: 460. 1848-1850. 
PLATE 103, 
A shrub about 3 meters high, the single trunks about 5 cm, in diameter; bark 
smooth, brownish gray; young branchlets densely ferruginous-hairy. 
Rachis of the leaves winged, densely ferruginous-hairy or pubescent, 4.5 to 
8.5 cm. long, the petiolar part nude, 0.5 to 1.5 cm. long, the wings 4 to 10 mm. 
broad; stipules ovate, obtuse, hairy, about 4 mm. long, early caducous; leaflets 
2 to 4-jugate, mostly 3-jugate, short-petiolulate, coriaceous; glands very small, 
rounded, pertuse, subsessile; petiolules fulvous or ferruginous-hairy, about 1 
mm. long; leaflet blades ovate or obovate to elliptic, subcuneate or rounded at 
the base, obtuse or acuminate at the apex, appressed-pilosulous above, with 
impressed costa and veins, villous-tomentose beneath, principally on the promi- 
nent costa and veins, the blades of the basal pair 2 to 5 em. long, 1.3 to 2 cm. 
broad, those of the terminal pair 5.5 to 13 cm. long, 2 to 5 cm. broad. 
Inflorescences single or geminate, axillary or terminal; peduncles ferruginous- 
pubescent, 1.5 to 2 cm. long; flower heads ovoid, the rachis hairy, 1.5 to 2 cm. 
long; bractlets very small, short and broad, obtuse, caducous; calyx tubular, 
slightly broadened at the apex, ferruginous-pubescent, 8 to 10 mm. long, the 
teeth short, broad, acute; corolla tubular, white, silky-hairy, 15 to 17 mm. long, 
the lobes ovate, obtuse, about 3 mm. long; staminal tube included, the stamens 
about 4.5 cm. long from the base; pistil about 5 cm. long; stigma capitellate. 
Legume not known. 
PANAMA: Panama, Duchassaing, the specimen in the Gray Herbarium 
being the type or at least part of it. Anc6én Hill, Canal Zone, alt. 200 
meters, flowers, February 20, 1908, Williams 82. 
This species is certainly distinct from Inga eriocarpa. The flowers in the 
original specimens in the Gray Herbarium are only in bud, but those of the 
Williams collection, perfectly developed, are much smaller than in the above 
species, and besides this the leaflets are distinctly different in shape and 
mostly 3-jugate. 
EXPLANATION OF PLATE 103,—Specimen of Inga pauciflora in U. 8. National Herbarium, 
Williams 32, cited above. Natural size. 
