PHILIPPINE DIPTEROCARPACEAE. 
251 
appear to be more numerous, the buds seem to be longer and to be pubescent or 
hairy, and the fruit is thicker, much heavier, occasionally so filled out that the 
ridges do not appear in the lower part of the fruit. The bark is very light- 
colored, like that of D. grandiflorus. 
Common names: anahaun, apitong (Tag., Vis.). 
10. Dipterocarpus grandiflorus Blanco FI. Filip, ed. 2 (1845) 314; ed. 3, 
2 (1878) 218, t. 263; A. DC. Prodr. 16 2 (1868) 611: Dyer in Journ. Bot. 12 
(1874) 106; Vidal Sinopsis Atlas (1883) xv, t. Ilf, f. A, Phan. Cum. Philip. 
(1885) 96, Rev. PI. Vase. Filip. (1886) 59; Burck in Ann. Jard. Bot. Buitenz. 
6 (1887) 201; King in Journ. Asiat. Soc. Bengal 62 2 (1893) 95;. Brandis & 
Gilg, in Engler & Prantl Nat. Pflanzenfam. 3 6 (1894) 257, f. 119, H ; Brandis in 
Journ. Linn. Soc. Bot. 31 (1895) 37; Ceron Cat. PI. Herb. (1892) 25; Merr. 
in Phil. Journ. Sei. 1 (1906) Suppl. 97; Foxworthy in Philip. Journ. Sci. 2 
(1907) Bot. 372, 4 (1909) Bot. 513, pi. 27, f. 71; Everett & Whitford in Philip. 
Bur. For. Bull. 5 (1906) 16, 25; Merritt in Philip. Bur. For. Bull. 8 (1908) 
48; Whitford in Philip. Journ. Sci. 4 (1910) Bot. 703, Philip. Bur. For. Bull. 
10 2 (1911) 69, pis. 68, 69. Plate XXXVI. 
Mocanera grandiflora, Blanco 1. c. ed. 1 (1837) 451. 
D. blancoi Blume Mus. Bot. Lugd.-Bat. 2 (1856) 35; Dyer in Journ. Bot. 12 
(1874) 106. 
Anisoptera ? Turcz. in Bull. Soc. Nat. Moscou 31 1 (1858) 233; Dyer 1. c. 106. 
D. motleyanus Hook. f. in Trans. Linn. Soc. Bot. 23 (1860) 159; A. DC. 1. c. 
611; Dyer 1. c. 106; F.-Vill. Noviss. App. (1880) 20. 
D. griffithii Vid. in -Cat. PI. Prov. Manila (1880) 18, non Miq. in Ann. Mus. 
Bot. 1 (1864) 213; F.-Vill. 1. c. 20. 
D. pterygocalyx Scheffer in Nat. Tidschr. Nederl. Ind. 31 (1870) 347; Dyer 
in Hook. f. FI. Brit. Ind. 1 (1874) 298. 
Trees 24 to 40 m high; young branches rather stout, subcompressed, 
at first hoary-puberulous, but finally quite glabrous, nearly black when 
dry ; leaf-buds shortly ovoid, minutely pale-canescent. Leaves coriaceous, 
ovate-elliptic, shortly acuminate ; the base broad, rounded or sub- 
truncate, subcordate, the edges of mature leaves entire or obscurely 
undulate-crenate, both surfaces glabrous; secondary nerves 14 to 16 pairs, 
spreading, rather straight, prominent on the lower, obsolete on the upper 
surface, length 15 to 23 cm, breadth 8 to 13 cm; petiole 5 to 7.5 cm 
long, glabrous. Bacemes about 4-flowered. Flowers articulated to the 
rachis, 5 cm long, rose-colored, fragrant. Calyx-tube 5-winged from base 
to apex. Petals linear-oblong. Fruit oblong, 5 cm long, wings stout, 
more than 1 cm wide ; the two accrescent lobes of the calyx oblong, obtuse, 
glabrous, reticulate, 18 to 23 cm long and 3 to 5 cm broad, 3-nerved, the 
medial nerve the longest and most distinct, the smaller calyx lobes sub- 
orbicular. 
This is much tbe best-known representative of the family in the Philip- 
pines. It has been found in all parts of the Islands except Mindanao. 
It seems to be more variable than any other of our species, but this may 
be because we do not know the other species so well. The margins of 
seedling leaves are found to vary all the way from coarsely dentate to 
