482 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
ferruginous-pubescent, about 1 cm. long; calyx short, broad, the sepals 6, 
ovate to oblong, concave, coriaceous, minutely ferruginous-pubescent without, 
10 to 12 mm. long, 6 to 8 mm, broad, the interior ones narrower and longer ; 
corolla tubular, pale yellow, 14 to 14.5 mm. long, the tube about 3 mm. long, 
glabrous or sparsely pilosulous without, the lobes 6, oblong, obtuse, glabrous 
on the margin, densely appressed-villous at the middle without, the whole 
corolla more or less grayish-pilosulous inside, principally at the base of and on 
the lobes; staminodia linear, acute, 8 to 3.5 mm. long, papillose near the apex, 
more or less grayish-hairy at the base; stamens 6, 2 to 3 mm. long, the filaments 
0.5 to 1.5 mm. long, more or less hairy, the anthers cordate-lanceolate, about 
2 mm. long; pistil 1.5 cm. long, the ovary ovoid or subglobose, 8 or 9-celled, 
ferruginous-hairy, the style thickest at the base, glabrous, distinctly capitellate. 
Fruit not known, 
Type in the U. 8. National Herbarium, no. 716608, collected in the forests 
around Pinogana, southern Darién, Panama, April 17, 1914, by H. Pittier (no. 
6542). 
Very closely related to L. laeteviridis Pittier, on account of the 8 or 9-celled 
ovary and certain other details, but differing in the greater size of the flowers, 
the indument of the corolla, the shape of the anthers, and the glabrous leaves. 
Lucuma laeteviridis Pittier, sp. nov. 
A deciduous tree, about 15 meters high, the trunk erect, about 35 em. in 
diameter at the base, the crown ovoid-pyramidal; bark of the branchlets 
brownish, more or less appressed-pubescent on the younger parts. 
Leaves membranous, congested at the ends of the branchlets, the petioles 
sulcate above, about 8 em. long, minutely appressed-pubescent, the blades 
obovate-elliptic, cuneate at the base, abruptly obtuse-acuminate at the apex (the 
acumen narrow, 1 to 1.5 cm. long), 10 to 80 ecm. long, 6 to 10 cm. broad, 
glabrous, entire, the primary veins 13 to 15, prominent on the light green 
lower face, subimpressed on the darker upper face. 
Flowers rather large, solitary or several together in the axils of the leaves 
or on the defoliate branchlets, the basal bracts very small, scarious, hairy, 
deciduous, the pedicels slender, minutely pubescent, 1.2 to 1.7 em. long; sepals 6, 
ovate, concave, minutely pubescent without, 6.5 to 8 mm. long, 6 cm. broad, the 
interior ones smaller; corolla tubular, yellowish white, 11.5 to 12 mm. long, 
glabrous at the base, covered on the upper half with appressed silvery hairs, 
the lobes 6, ovate, obtuse or truncate at the apex, 2 to 2.5 mm. long; staminodia 
6, linear, minutely pubescent on the sides, papillose at the apex, about 3.5 
mm. long; stamens 6, inserted very high on the corolla tube, glabrous, 8 to 8.5 
mm, long, the filaments about 2 mm. long, the anthers introrse, ovate-oblong, 
attenuate toward the apex, cordate at the base, 2 to 2.5 mm. long; pistil 
11 mm. long, the ovary subglobose, tomentose, 8 or 9-celled, the cells 1-ovulate; 
style glabrous, subcapitellate. 
Fruit not known. 
Type in the U. S. National Herbarium, no. 1,012,336, collected in forests at 
Las Playitas, Department of Izabal, Guatemala, May 18, 1919, by H. Pittier 
(no. 8534). 
In this species the calyx, corolla, and androecium are hexamerous, and 
the ovary is 8 or 9-celled, a combination not reported for any other member of 
the genus except L. glabrifolia, which excludes these two trees from the nearly 
related groups. In the absence of fruit their real place remains doubtful. 
Among the natives of the Motagua Valley the tree is called “ingerto de 
montafia,” which would indicate a supposed relation to Calocarpum viride; 
the fruit is the “zapotillo calenturiento.” 
