PITTIER—REVISION OF THE GENUS INGA. 199 
Inga purpusii Pittier, sp. nov. 
A tree; young branchlets angulate, fulvous or brownish-hairy, covered with 
roundish, white lenticels. 
Rachis of the leaves densely hairy, 10 to 13.5 cm. long, narrowly winged 
between the two upper leaflet pairs, terete or submarginate between the basal 
and middle pair, the petiolar part 5 to 5.5 cm. long, terete; stipules ovate or 
oblong, obtuse, densely pubescent, 7 to 10 mm. long, subpersistent; leaflets 2 
or 3-jugate, short-petiolulate, membranous, suboblique; glands very small and 
subsessile or obsolete; petiolules densely hairy, about 1 mm. long; leaflet 
blades ovate to oblong, more or less narrowed or broadly rounded at the base, 
acute or short-acuminate at the apex, sparsely hairy, reticulate, and lustrous 
above, paler, reticulate, and hairy beneath, the costa and veins more or less 
pubescent and prominent on both faces, the blades of the basal pair about 
10 cm. long, 5 cm. broad, those of the terminal pair 18 to 18 cm. long, 7.5 to 
9 cm. broad. 
Inflorescences axillary or terminal, the peduncles densely ferruginous- 
hairy, 3 to 5 cm. long, the flower heads elongate (up to 8 cm. long) ; flowers 
sessile; bractlets linear, hairy on both faces, 2 to 2.5 cm. long, persistent; calyx 
tubular, acute at the base, striate, sparsely and minutely hairy, 16.9 to 20 
(18.9) mm. long, the teeth very narrow, 4 to 6 mm. long; corolla tubular, 
broadening toward the apex, 29 to 32 (30.4) mm. long, villous, the lobes rather 
broad, 2 to 3.5 mm. long; staminal tube included or very shortly exserted, 
the filaments purple and very long (6.5 to 7 cm. from the base of the tube), the 
pistil 7 to 7.5 cm. long, the stigma clavate. 
Legume (immature?) about 30 cm. long, 2.7 cm. broad, thin, rounded at the 
base, long-apiculate, glabrous, the margin thick, rounded, slightly elevated 
around the valves. 
Type in the Herbarium of the New York Botanical Garden, collected at 
Finca Yolanda, Chiapas, Mexico, flowers and fruits, September, 1913, by 
©. A. Purpus (no. 6811). 
The specimen described is not very satisfactory, the leaves being few and 
badly pressed and the floral spikes all detached. The plant is very distinct from 
Inga panamensis Seem., the leaflets being differently shaped and very hairy, the 
flowers much larger, and the legume narrower and with a less prominent 
margin. 
DESCRIPTIONS OF TWO OLD SPECIES WITH NOTES. 
Inga spectabilis Willd., first mentioned and summarily character- 
ized and figured by Vahl as a Mimosa species, has never been fully 
described under its present name. Kunth appears to have ignored 
Willdenow’s mention and divided the species into two distinct types, 
I. lucida* and I. fulgens,2 which, however, seem to differ only in the 
shape of the leaflets. 
Of Jnga panamensis we have only the short diagnosis in Bentham’s 
revision. It will not be outside the scope of the present paper, then, 
to give full descriptions of both species. 
*In H. B. K. Nov. Gen. & Sp. 6: 287. 1823. 
*Mimos. Pl. Légum. 36. pl. 11. 1819-1824. 
