PHILIPPINE DIPTEROCARPACEAE. 
269 
KEY TO THE PHILIPPINE SPECIES OF SHOREA. 
a. Leaves broadly ovate, thickly coriaceous, margins inrolled; wood soft and red. 
13. S. sp. 
aa. Not as above. 
b. Leaves distinctly ligl iter-colored beneath. 
c. Leaves grayish or yellowish, pubescent beneath; wood very hard, yellow or 
brownish 1 . 8. balangeran 
ce. Not as above. 
d. Leaves i;etuse at the apex, coriaceous, light-colored and almost glabrous 
beneath; wood light-colored and coarse-grained 2. 8. malaanonan 
dd. Leaves acute at the apex, chartaceous, with grayish pubescence of 
stellate hairs beneath ; wood hard, fine-grained, red. 
6. 8. sp. (Pubescent guijo) 
bb. Leaves not lighter in color beneath, usually the same on both surfaces, 
c. Leaves usually cuneate at base. 
d. Secondary nerves less than 10 pairs, domatia present 14. 8. sp. 
dd. Secondary nerves more than 10 pairs, domatia not present.... 5. 8. guiso 
cc. Leaves rounded or cordate at base. , 
d.‘ Stipules small and early deciduous. 
e. .Leaves coriaceous, glabrous beneath, margins sometimes slightly in- 
rolled 10. 8. polysperma 
11. 8. warburgii 
ee. Leaves chartaceous, with pubescence of stellate hairs beneath. 
3. 8. philippinensis 
dd. Stipules of some size and persistent, at least on young shoots. 
e. Stipules broadly ovoid, acute or obtuse, thickly covered with stellate 
hairs. 
f. Leaves large, copper-color in drying 8. 8. squamata 
ff. Leaves small, pallid when dry 4. S. sp. (Saray) 
ee. Stipules not so broad, lanceolate, acuminate. 
f. Leaves lanceolate-acuminate, narrow, not prominently' stellate- 
pubescent beneath; buds scurfy 12. 8. teysmanniana 
ff. Leaves elliptic or oblong, acuminate, prominently stellate-pubescent 
beneath. 
g. Tertiary veins thickly beset with large stellate hairs ; wood fine- 
grained, pale-red 9. 8. eximici 
gg. Tertiary veins not so thickly covered with stellate hairs; leaves 
more coriaceous; wood coarser-grained, bright-red. 
7. 8. negrosensis 
1. Shorea balangeran (Korth.) Dyer ex Vidal Rev. PI. Vase. Filip. (1886) 
61; Burclc in Ann. Jard. Bot. Buitenz. 6 (1887) 214; Brandis in Journ. Linn. Soe. 
Bot. 31 (1895) 86; Foxworthy in Phil. Journ. Sci. 4 (1909) Bot. 508, 516, pi. 
XXVII, f. 67; Whitford in Philip. Bur. For. Bull. 10" (1911) 73, pi, 78. 
Hopea balangeran Korth. in Verh. Nat. Gesch. Bot. (1848) 74, t. 7 ; Miq. FI. 
Ind. Bat. 1 2 (1859) 503; A. DC. Prodr. 1 6 2 (1868) 634. 
Parahopea balangeran Heim Reeherch. Dipterocarp. (1892) 66. 
Young branches subcompressed, with peduncles and petioles lepidote- 
velutinous, fulvous ; leaves rounded at base, ovate-oblong, acuminate, 
glabrous above, clothed beneath with very fine yellowish-brown pubescence,' 
10 to 20 cm long, 5 to 6 cm wide, secondary nerves 11 to 16, tertiary not 
very distinct. Petiole 2.5 cm long. Stipules lanceolate, acutish, stellate- 
