January 30, 1911] THE GENUS CaNARIUM or Mount Apo 1083 
Collected in compact fertile soil of woods bordering the 
upper limit of the cogon formation and the Baracatan creek 
at 1500 feet. The Bagobos know it as ‘‘Ogat-magasurud.’? 
Named after Data Toncaling,. the Bagobo chief, who has 
done me numerous kind favors to help along my botanical 
explorations, besides offering me his house while I was 
working in his neighborhood. 
It resembles somewhat C. thyrsoidewm Perk. 
Canarium apoense Elm. n. sp. 
Slender tree, with a 4 dm. thick and 15 m. high stem; 
branches chiefly at the top, crookedly rebranched; wood 
whitish and reddish toward the center, moderately hard, 
burly, odorless and tasteless; bark smoothish, grayish mottled, 
reddish brown beneath the epidermis. Leaves rigidly char- 
taceous, glabrous, turning blackish while drying, alternate, 
only few at the ends of the suberect tips, ascending or the 
lower ones horizontal, shining green on the upper shallowly 
conduplicate surface, much paler green or yellowish so beneath, 
entire, the abruptly acute or acuminate tips recurved, base 
obtusely rounded and usually a trifle inequilateral, the lower 
ones smaller, usually with 9 leaflets, oblong or the terminal 
one obovately oblong, nearly 1 dm. long and 3.5 cm. wide; 
midrib prominent beneath, with 9 to 11 similarly prominent 
lateral pairs, reticulations fine and conspicuous; petiolule 
5 mm. long, the terminal two to three times as long, smooth 
and brown as is also the rachis; stipule setaceously acuminate, 
5 mm. long, glabrous. Inflorescent spikes 8 to 18 cm. long, 
axillary, ascending, dull green, entirely glabrous; calyx greenish, 
cup shaped, the rim roundly 3-lobed, about 3.5 mm. long, 
thick, subglabrous on the outside; corolla rigid, yellowish, 
oblong, 5 mm. long, the exposed outer side yellowish gray 
puberulent, apices rounded and with short incurved tips; 
stamens 6, all equal, free, inserted upon the base of the 
calyx and outside the rugose ovary; filament glabrous, flat- 
tened, widest at the base, 1.5 mm. long; anthers oblong, 2 
mm. long, basifixed; fruits not seen. 
Type specimen 11638, A. D. E. Elmer, Todaya (Mt. Apo), 
District of Davao, Mindanao, September, 1909. 
