PITTIER—-PLANTS FROM COLOMBIA AND CENTRAL AMERICA. 167 
cm. long, 2.5 to 7 cm. broad, smooth and finely reticulate above, grayish velvety 
with prominent venation beneath; primary veins 15 to 17; margin entire. 
Flowers small, subsessile, 1 to 4 in the axils of the leaves or on the defoliate branch- 
lets, provided at the base with about 4 brownish scarious bracteoles. Sepals 4, in 
alternate valvate pairs, 3 mm. long, ovate, the 2 exterior ones brownish-velvety 
outside, the interior petaloid. Corolla tubular, 3 mm. long or slightly longer than 
the calyx, white, glabrous, 4-lobulate, the 
lobes obtusely rounded. Stamens 4, inserted 
at the base of the corolla and free, glabrous, 
about 3 mm. long; filaments rather thick; 
anthers extrorse, ovate-acuminate, cordate at 
base. Staminodes 4, inserted in the sinuses 
of the lobules, about 0.7 mm. long, acute at 
the tip. Pistil about 2 mm. long; ovary 
subspherical, 4-celled, surrounded by lcng 
. oo . Fig, 92.—Lucuma standleyana. a, Sepal; b, 
straight hairs; style smooth, rounded at tip. part of corolla, showing also stamens and 
Young fruits pomiform, villous; mature fruit — staminodes; ¢, pistil. Scale 6. 
not known. 
Type in the U.S. National Herbarium, no. 678879, collected on Mamei Hill, Canal 
Zone, Panama, near the top, about 80 meters above sea level, flowers, July 6, 1911, 
by H. Pittier (no. 3807). 
This species seems to be closely allied to Zucuma glomerata Miquel, having in com- 
mon the low-inserted stamens and the silvery indument of the lower face of the 
leaves, but differing by the number of the primary veins and by the flowers being 
slightly larger, the margin of the sepals and lobules of the corolla smooth, and the 
latter more coherent and covering the narrower staminodes. 
Lucuma sambuensis Pittier, sp. nov. 
- A small, lactescent tree, about 10 meters high, the trunk 35 cm. in diameter at the 
base. Crown pyramidal, with radiate branching. Bark reddish gray, smooth. 
Young twigs sulcate, glabrous. 
Leaves alternate or in whorls at the end of the young twigs, petiolate, entirely 
glabrous. Petiole thick, 1 to 1.5 cm. long, broadly canaliculate. Leaf blades 
obovate or oblanceolate, cuneate at the base, acuminate at tip, 20 to 25 cm. long, 
5 to 9 cm. broad, light green above, paler beneath. Midvein salient on both faces, 
more so beneath; primary veins strongly arcuate, ]3 to 15 on each side, subimpressed 
on the upper face, very salient on the lower one; margin quite entire. 
Flowers not known. 
Fruit ovoid, sessile or subsessile, fleshy, very lactescent, 5.5 cm. long, 4 cm. in 
diameter, densely pilose-pubescent, and obscurely sulcate from base to top. 
Type in the U. S. National Herbarium, no, 715896, collected on the foothills of 
the Garagar4 Mountains, in the Sambi Valley, southern Darien, Panama, fruit, 
February 7, 1912, by H. Pittier (no. 5621). | 
This species does not answer to the description of any of those known, but belongs 
very likely to the section Macroluma, together with L. sclerocarpa. In the absence 
of the flowers its status can not be definitely settled. 
Bumelia obovata A. DC. in DC. Prodr. 8: 191. 1844. FicurRE 93. 
A small tree, up to 6 meters high, the trunk seldom over 20 cm. in diameter, branched 
from close to the base. Bark more or less scaly, brownish gray. Branchlets usually 
ending in an elongate, conical thorn. 
Leaves small, deciduous, glabrous, 2 to 6-clustered (in the first stage) or single. 
Petiole about 8 mm. long. Leaf blades obovate, cuneate at the base, rounded or 
emarginate at tip, olive-green and shiny above, pale beneath, when mature about 4 
5432°—16——3 
