DecemBer 27, 1910] Tae Oaxs or Mount Apo 941 
Represented by number 11853, Elmer, Todaya (Mt. Apo), 
Mindanao, September, 1909. 
Quercus sundaica Blm. 
Field-note for 11679:—Tree, 45 feet high, on a dry forest- 
ed ridge at 6000 feet of mount Calelan; stem 2 feet thick, 
branched from the middle; the main ascending branches ulti- 
mately widely spreading; the twigs erect, comparatively short, 
numerous and forming dense bushes; wood hard, whitish on 
the outside at least, heavy, tasteless, with a faint oak odor; 
leaves ascending, recurved toward the tips, subchartaceous, 
curvingly conduplicate on the upper side, sublucid and deep 
green above, grayish beneath and with yellowish veins; young 
infrutescence erect, yellowish green as is also the cup which 
encloses the greater part of the smooth dark green acorn. 
The Bagobos call it ''Ulayan." 
Represented by numbers 10512, 11245, 11679, 11810, 
10624, 11919 and 11943, Elmer, Todaya (Mt. Apo), Mindanao, 
May to October, 1909. 
The above numbers represent at least three distinct spe- 
cies. The first two numbers cited are in young fruit and 
flower only, and are indentical in foliage which, however, 
differs from the succeeding five numbers. The last cited 
number is identical in foliage to the middle series of num- 
bers which I take to be Blume’s species, but the young acorns 
are different. 
Quercus minahassae Koord. 
Field-note:—A large 50 feet high tree, on a wooded 
ridge at 4000 feet of mount Burebid; stem terete, at least 
3.5 feet in diameter; wood whitish on the outside at least, 
heavy, hard, nearly odorless and tasteless; bark smoothish 
or lenticelled, yellowish gray mottled, reddish brown beneath 
the epidermis; main branches arising from above the mid- 
dle, the ultimate ones quite numerous and suberect; leaves 
ascendingly recurved, folded upon the upper darker green 
surface, tips strongly recurved; infrutescent spikes 3 to 5 
inches long, ascending or erect, terminal or from the up- 
permost leaf axils; acorns 0.5 inch across, nearly 0.75 of an 
