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180 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. \ at 
certain degree excusable. The description of /nga paterno, although 
broad enough to include both types, seems to apply better to the 
species commonly known as “ paterno.” In the following paragraphs 
I have tried to define the specific characters more clearly, adding also 
those of the fruit. 
Inga paterno Harms, Repert. Nov. Sp. Fedde 13: 419. 1914. PLATE 88. 
A medium-sized tree; branchlets terete, lenticellose, glabrous. 
Leaves glabrous or glabrescent; rachis more or less broadly marginate be- 
tween the leaflets, 8.5 to 15 em. long, the petiolar part 2 to 2.5 cm.; stipules 
obovate to oblong, subobtuse, persistent, 1.5 to 2 cm. long, 0.6 to 1 cm. broad ; 
leaflets 4 or 5-jugate, petiolulate; glands sessile, almost urceolate, sometimes 
obsolete or reduced to one between the basal leaflets; petiolules glabrescent, 4 
to 6 mm. long; leaflet blades elliptic to ovate-lanceolate, oblique, rounded, 
acute, or subcuneate at the base, obtuse at the apex or acuminate with an ob- 
tuse tip, coriaceous, light green and lustrous above, dull beneath, more or less 
reticulate on both faces, those of the basal pair 4 to 8 cm. long, 2 to 3 cm. 
broad, those of the terminal pair 14 to 17 cm. long, 5 to 6 cm. broad. 
Inflorescences axillary on foliate or defoliate nodes, or terminal and panicu- 
late; spikes short-pedunculate or long-pedunculate, single or geminate; pe- 
duncles 8 to 7.5 em. long, glabrous; bractlets Subulate, pubescent, shorter than 
the pedicels; pedicels 1 to 2 mm. long, glabrous; calyx tubular, 1 to 2.5 (2) 
mm. long, almost glabrous, the teeth acute, about 0.5 mm, long, more or less 
puberulous; corolla glabrous, tubular-campanulate, 3.5 to 7.5 mm. long, the 
lobes acute, pilosulous, about 1.5 mm. long; staminal tube included; ovary 
glabrous, substipitate. 
Legume pedunculate, laterally long-stipitate, rounded at the apex, glabrescent, 
2 or 8-seeded, 9 to 12 em. long, 4 to 5 em, broad; seeds ovoid-oblong, about 3 cm. 
long and 1 cm. broad, depressed. 
Costa Rica: San José de Costa Rica, April 6, 1903, Cook & Doyle 15. In 
a coffee plantation near Alajuela, flowers, March, 1896, J. D. Smith 
6490. 
GuATEMALA!: Barberena, Department of Santa Rosa, alt. 1,000 meters, 
flowers, July, 1893, Heyde & Lux (J. D. Smith, no 3280). San Miguel 
Uspantin, Department of Quiché, alt. about 2,000 meters, flowers, 
April, 1892, Heyde & Lux (J. D. Smith, no. 3309). Chinantla, near 
Guatemala City, fruits and flowers, May, 1892, J. D. Smith 2819. 
Escuintla, Department of Escuintla, fruits, April, 1892, J. D. Smith 
2820. Cuajinilapa, Department of Santa Rosa, alt. 850 meters, 
flowers, November, 1893, Heyde & Lux (J. D. Smith, no 1893). 
Mexico: Oaxaca, flowers, April 9, 1894, #. W. Nelson 349. 
Inga paterno is very variable in its characters, especially with regard to the 
dimensions of the flowers and leaves. The former, however, are always dis- 
tinctly pedicellate, and this, along with the large, persistent stipules, distin- . 
guishes it from J. jinicuil, with which it often has been confused. It differs 
from I. cordistipula in the shape and number of leaflets and in the details of 
the much smaller flowers. The short, stipitate, few-seeded fruit is sufficient to 
distinguish I. paterno from I. radians, which has long, exstipitate, many-seeded 
legumes; but the leaflets also differ in shape, dominating number, and texture, 
while the floral spikes are erect in the former and loose in the latter, which 
has besides decidedly larger flowers. 
EXPLANATION OF PLATE 88.—Two fruits of a Guatemalan specimen of Inga paterno 
mentioned above, Heyde ¢ Lux (J. D. Smith, no. 2820), in the John Donnell Smith 
Herbarium. Natural size. 
