PITTIER—-REVISION OF THE GENUS INGA, 187 
Type in the John Donnell Smith Herbarium, collected at El Recreo, Ecuador, 
flowers, December 14, 1896, by Baron Eggers (no. 15464). The same number 
is also in the Herbarium of the Field Museum. 
Closely related to Inga leiocalycina Benth. of Brazil and British Guiana, but 
the pubescence is sparser, the glands small, the leaflets 3-jugate, the calyx 
sparsely covered with minute hairs, the corolla glabrous on the lower half, 
the staminal tube exserted, etc. 
EXPLANATION OF PLATE 92.—A specimen of the type collection of Inga semiglabra in 
the Herbarium of the Field Museum of Natural History, no. 143132. Natural size. 
NOTES ON CRITICAL SPECIES, 
Inga multijuga Benth. Trans, Linn. Soc. 30: 615. 1875. 
Probably founded on Sutton Hayes’s specimens from Panama, which I have 
not seen. Numbers 641, 729, 734, and 739 of the Guatemalan collection of Cook 
and Griggs (1902) agree with the diagnosis, except that in no. 641, the 
only one with flowers, the leaflets are only 5 or 6-jugate. The length of the 
calyx varies from 7 to 8 mm., and that of the corolla between 238 and 25 mm. 
The leaflets are always rounded at the base and either acute or acuminate at 
the apex; in size, they keep within the limits given by Bentham, except in 
no. 739, which, it is surmised, was taken from a sapling. These specimens 
show a close resemblance to J. thibaudiana, but the flowers are longer and 
more in accordance with the description of the above-named species. 
Fendler’s no. 51, from Chagres, Panama, cited after the diagnosis of J. 
multijuga and represented in the Gray Herbarium, is more likely to be a large- 
flowered form of I. ruiziana. The calyx measures only 4.3 mm. and the longest 
corolla 16.1 mm., which is much under the dimensions given for I. multijuga. 
The identification of specimens from Costa Rica (Inst. Fis. Geogr. Costa 
Rica, no. 6793) as this species by Micheli is also wrong. These represent a 
distinct type which I have described above as Inga aestuariorum Pittier. 
Inga peltadenia Harms, Verh. Bot. Ver. Brand. 48: 160. 1906. 
This species, if distinct, is very closely related to Inga thibaudiana DC., and 
is characterized mainly by the very large, peltate glands. Most of the 
Bolivian specimens in our collections classified under the last name would 
belong to the former type. The legume, as shown by Williams’s no. 575 
(Herb. N. Y. Bot. Gard.) from Zumupasa, Bolivia, is straight or almost 
so, flattened, rounded at the base, apiculate, about 19 cm. long, fulvous- 
pubescent, the faces flat, 2 cm. broad (including the elevated margins, these 
about 3 mm. broad); seeds 12 to 18, According to Bentham?’ the pods of 
I. thibaudiana are from 15 to 30 cm. long, 1.9 to 2.6 em. broad, and identical 
with those of the former in their other characters. 
Inga punctata Willd. Sp. Pl. 4: 1016. 1806, excl, syn. 
This species and I. leptoloba Schlecht., besides being both variable, are easily 
confused. An attempt has been made at separating two conspicuous varieties of 
the first, and others could undoubtedly be established within the latter species. 
This task, however, is made difficult by the scarcity of complete specimens, 
including mature pods. 
The following characters seem to be essential in J. punctata: The leaflets 
are, as a rule, 2-jugate, broadly ovate, broadly rounded at the base, long and 
sharply acuminate, with an almost membranous texture and distant veins; 
1In Mart. Fl. Bras. 15’: 480. 1876. 
