194 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
cous or at the most only subpersistent. The knowledge of the fruit 
in these three species will certainly help very much in the definition 
of their relationship and true affinities, but meanwhile they should 
be placed side by side among the Pilosiusculae. A Guatemalan speci- 
men of /. micheliana is illustrated in plate 99. 
During my last stay in Panama, I collected specumens of a small 
tree closely corresponding to the description of Znga hayesii Benth. 
The supposition of its being this species was confirmed later by a 
comparison with the type at Kew. The fruit of this species is not 
yet known, but a full description of the leaves and flowers is now 
given. 
Inga hayesii Benth. Trans. Linn. Soc. 80: 617. 1875. 
A small tree; branchlets terete, with a reddish, lenticellose bark; young 
shoots more or less brownish-villous. 
Leaves light green above, paler beneath; rachis 5 to 11.5 em. long, sparsely 
hairy, winged (the wings 7 to 10 mm. broad) ; stipules obovate, obtuse, densely 
pubescent without, strongly veined within, 3 to 4 mm. long, deciduous; leaflets 
2 or 3-jugate, short-petiolulate; glands small, subsessile, brownish, with a dark 
pit; petiolules pubescent, about 1 mm. long: leaflet blades ovate to lanceolate, 
rounded and subemarginate at the base, obtuse or acute and apiculate at the 
tip, glabrous excepting the sparsely hairy costa, reticulate on both faces, the 
costa and veins more prominent beneath, the blades of the basal pair 3.5 to 
7 cm. long, 1.7 to 4 cm. broad, those of the terminal pair 7 to 14 em. long, 
5.5 to 6 em. broad. 
Inflorescences axillary, single or geminate, very shortly pedunculate; 
peduncles and rachis strigose-hairy, the former 8 to 5 mm. long, the latter 
10 to 15 mm. long; bractlets lanceolate, acute, pubescent without, about 2 mm. 
long, deciduous; flowers sessile; calyx 6.7 to 8.2 (7.4) mm. long, tubular but 
slightly broadening toward the tip, glabrous or sparsely hairy at the base, 
striate, the teeth irregular, acute, minutely pubescent at the tips; corolla 
tubular-funnelform, white, villous, 15.8 to 16.6 (16.3) mm. long, the lobes 
narrow, acute, 3.5 to 4 mm. long; staminal tube included; ovary sessile, gla- 
brous, very short, deeply sulcate on both sides, 6-ovulate; style about 4 em. 
long, equaling the stamens, the stigma capitellate. 
Legume not known. 
PANAMA: Panama, Hayes. Hills around the agricultural experiment sta- 
tion at Matias Hernandez, near Old Panama, flowers, July 10, 1914, 
Pittier 6714. 
This species is characterized by its glabrous or almost glabrous calyx, in 
appearance not unlike that of Inga longipes Benth. and J. hirsutissima Rusby, 
and by its almost sessile spikes, The type has been wrongly compared with 
I. maritima Benth., which is illustrated in plate 100. 
EXPLANATION OF PLATE 99.—Specimen of the type collection of Inga micheliane 
Harms, in the Gray Herbarium, collected at Rfo Negro, Department of Quiché, Guatemala, 
altitude about 1,080 meters, March, 1892, by Heyde and Lux (J. D. Smith, no. 3319). 
Natural size. 
EXPLANATION OF PLATE 100.—Specimen of Inga maritima Benth., in U. 8S. National 
Herbarium, collected in the vicinity of Rio de Janeiro, Brazil, July, 1833, by Riedel (no. 
442). Natural size. 
