DECEMBER 27, 1910] THE OAKS or Mount Apo 945 
Quercus apoensis Elm. n. sp. 
Large stocky tree; stem at least 17.5 m, high, 1 m. thick; 
main branches arising from the middle, ascending, ultimately 
widely spreading and crookedly rebranched; twigs or the two 
year old branchlets rigid, ascending, the young portions green, 
otherwise grayish and covered with lenticels or excrescences; 
old park yellowish gray, smoothish or thinly checked and ob- 
scurely lenticelled; sapwood whitish, hard, neither with taste 
nor odor, streaked with brownish vessels. Leaves rigidly 
chartaceous, mostly horizontal and recurved especially so toward 
the short acute or obtuse apex, very deep green on the upper 
conduplicate side, grayish green beneath, alternate, widely 
scattering, the entire margins subinvolute in the dry state, 
the upper side turning nearly black while drying, the 
lower side takes a characteristic lead color, glabrous, short and 
abruptly acute at the base, elliptish oblong, the larger blades 
16 cm. long, 7.5 em. wide across the middle, quite often much 
smaller; midrib conspicuous on both sides, with 6 to 9 as- 
cending lateral pairs, cross bars faint, all dark brown; petiole 
glabrous, terete or the upper one third flattened and with decur- 
rent leaf bases, 3mm. thick, 1.5 cm. long. Flowers not seen; in- 
trutescent spikes terminal from the second year old branch- 
lets, suberect, 1 to 1.5 dm. long, stout, woody, 5 to 7.5 mm. 
thick, yellowish pulverulent but soon becoming glabrate; fruits 
scattered, divaricate, 3 to 4 cm. long; glans at first covered 
with a fine yellowish gray pulverulence, dome-shaped, with a 
broad base, terminated into a stout mucronate, stigmatic 
apex, 2.5 em. across the base, nearly 3 cm. long; cup, 3.5 cm. 
wide, 1.5 cm. deep, stipe nearly obsolete, usually rugose on 
the under side, otherwise lamellate especially, toward the 
margius but without excrescences. 
Type specimen 11887, A. D. E. Elmer, Todaya (Mt. Apo), 
District of Davao, Mindanao, September, A909. 
Collected in dense forests on,a gentle ridge at 3500 feet, 
on the trail from Todaya to Talon and on the Talon 
side of the mountain range. This also the Bagobos call 
*“Ulayan.’’ 
Allied to Q. merrittti Merr., but different in a number 
of good characters. 
