PITTIER—REVISION OF THE GENUS INGA. 911 
mm. long or shorter, caducous; flowers sessile; calyx rufous-tomentellous, 
broad, 5 to 8.5 mm. long, the teeth either very short or up to 3 mm. long; 
corolla silky-villous, broader at the apex, 15 to 17 mm. long, the lobes 3 to 3.5 
mm, long; staminal tube included or slightly exserted; pistil 4.5 to 5 em. long, 
the stamens a little shorter; stigma capitellate, flat at the apex. 
Legume funiculiform, slender (about 0.8 cm. in diameter), 10 to 15 em. 
long, rufous-tomentellous, the suleate margins almost entirely covering the 
valves. 
Type in the Gray Herbarium, collected at Yungas, Bolivia, in 1890, by 
Miguel Bang (no. 236). 
Borivia;: (Besides type) Unduavi, alt. 2,650 meters, flowers, October, 1885, 
Rusby 991. Apolo, along stream, alt. 1,600 meters, flowers and young 
fruits, September 6, 1902, Williams 1602. Polo-Polo, near Coroico, 
Yungas del Norte, alt. 1,100 meters, flowers, October, 1912, Buchtien 
3779. 
Pegvu: San Miguel, Urubamba Valley, alt. about 1,800 meters, flowers, 
May 23 and 28, 1915, Cook &€ Gilbert 875, 948. 
The characteristic feature of this species is the presence on the costa of the 
leaflets of extrafloral nectaries like those found on the rachis. This has been 
reported so far only in the case of Inga pruriens Poepp. & Endl., a lost Peruvian 
species which belongs to another section. The shape of the wings, the size 
of the calyx, etc. seem to be very variable. 
Inga cocleensis Pittier, sp. nov. 
A tree; young branchlets, leaf rachis, and rachis of the floral spikes velvety 
rubiginous pubescent. 
Rachis (of the only leaf present) wingless, terete, 18.5 cm. long, the petiolar 
part 2 to 2.5 cm. long; leaflets 6-jugate, petiolulate, coriaceous; glands mostly 
large, prominent, often transversely ovate, concave; petiolules 3 to 5 mm. long, 
thick, densely velvety-pubescent; leaflet blades oblong-elliptic, broadly rounded 
at the base, acuminate at the apex, pilosulous and more or less strigose above, 
the costa and impressed veins more or less ferruginous-pubescent, beneath 
densely pubescent and reticulate, the costa and veins very prominent, the blades 
of the basal pair 4 to 7.5 cm. long, 1.5 to 3 cm. broad, those of the terminal pair 
9.5 to 13 cm. long, 2.5 to 4.5 em. broad. 
Inflorescences single in the axils of the leaves; peduncles terete or subangu- 
date, 4 to 5 cm. long; rachis of the flower heads thick, 4 cm. long; calyx tubular, 
rubiginous-pubescent, 6 to 7 mm. long; corolla not seen. 
Legume (immature) slender, terete, longitudinally sulcate, minutely rubi- 
ginous-pubescent, cuspidate, twisted, 10 to 20 cm. long. 
Type in the Herbarium of the New York Botanical Garden, collected at 
Bismarck, above Penonomé, Province of Coclé, Panama, at an altitude of 700 
to 1,000 meters, fruits, March 5 to 19, 1908, by R. S. Williams (no. 405). 
Perhaps closely related to Inga rubiginosa DC., from the Guianas, but readily 
distinguished by the larger number and elongated shape of the leaflets. The 
only known specimen was found on the ground, broken off from the tree, and is 
very incomplete, but it is sufficient to show that the plant belongs to a small group 
represented in Central America by only one other species (J. eriorhachis), and 
to exclude the possibility of its being confused with any other type. 
Inga donnell-smithii Pittier, sp. nov. 
A low tree; branches terete, with gray bark, the younger parts densely rufous- 
hairy. 
Rachis of the leaves thick, winged, densely rufous-hairy, 11 to 18 cm, long, 
the petiolar part wingless, 1 to 2 cm. long, the wings more or less sparsely 
