946 LEAFLETS or PAILIPPINE BOTANY [Vor. III, Arr. 52 
Quercus apoensis ulayan Elm. n. var. 
A tall stout tree; stem 20 to 25 m. high, 1.33 m. 
thick, terete, rather crooked, branched from below the 
middle; the main branches crookedly rebranched, widely: 
spreading; branchlets rigid, densely covered with yellowish 
gray wart-like excrescences; wood hard, odorless and taste- 
less, whitish; bark thick, yellowish beneath the epidermis, 
grayish mottled, minutely checked. Leaves horizontal, deeply 
conduplicate on the upper very dull green surface, grayish 
beneath even in the dry state, the upper side turning 
brown, alternatingly scattered, the entire margins subinvolute, 
glabrous, flat or only slightly recurved at the abruptly acute 
or acuminate apex, rigidly chartaceous, base rounded, with 
short decurrent sides, quite variable in size, the average 
ones 1.5 dm. long by 7 cm. wide across the middle or a 
trifle below it, oblong to ovately oblong or the larger subrotund; 
petiole very thick, 2 cm. long, glabrous, the upper 5 mm. 
with decurrent leaf sides; midrib conspicuous on both sides, 
with 7 lateral ascending pairs whose tips are strongly curved, all 
glabrous and brownish, thecross bars rather faint. Infrutescence 
terminal or from the uppermost leaf axils of the second year 
old twigs, 7 to 20cm. long, sparingly branched, ascending; fruits 
clustered, frequently grown together, the larger ones 2 cm. 
across; glans flattish, broadest at the base, bearing a promi- 
nent mucronate point, more or less covered with a yellowish 
brown pulverulence; cup without stipes, grayish green, lamel- 
late especially toward the margins where it bears some seatter- 
ing teeth-like excrescences. 
Type specimen 11811, A. D. E. Elmer, Todaya (Mt. Apo), 
District of Davao, Mindanao, September, 1909. 
This splendid oak stood on a steep bench leading up a 
densely wooded ridge at 5500 feet of mount Calelan. Rare! 
This as all other true oaks the Bagobos know as ""Ulayan.?? 
In foliage it is very similar to the preceding, but the 
falling acorns are much smaller and different in shape. 
Tne Esco.ra Press, INC. . 
