The Philippine journal of science. [Vol. 67, no. 1]

280

The Philippine Journal of Science

1938

13141, collected in Tayabas Province) was considered distinct
because of what was believed to be a curiously shaped immature
fruit; I was unable to place it in a genus and listed it 26 among
species of uncertain position. It is now evident that what was
supposed to be an immature fruit was really an insect gall, and
that the form belongs to H. plagata. There have since been
other collections from Tayabas Province that show the same
form of insect gall (For. Bur. 20823 and Bur. Sci. 25529).
Of the nearly 60 collection sent me all are sterile except the
following:
LUZON, Rizal Province, in flower, March, Loher 12914; in
fruit, July, Loher 14892, 14901: Bataan Province, in fruit, July,
For. Bur. 25889, 26133: Camarines Province, fallen fruit, November, For. Bur. 22645, 22649: Nueva Vizcaya Province, fruit,
July, For. Bur. 29530, 29531, 29532.
It would seem that flowers are borne during the dry and fruit
during the rainy season. It is said that the tree does not bear
flowers every year, but only at irregular intervals.
The recorded distribution is as follows:
LUZON, Cagayan, Ilocos Norte, Nueva Vizcaya, Pangasinan,
Nueva Ecija, Tarlac, Zambales, Bataan, Rizal, Bulacan, Tayabas, Camarines, and Sorsogon Provinces. MINDORO. TABLAS.
BOHOL. MINDANAO, Cotabato and Zamboanga Provinces. BASILAN. TAWITAWI.
5. HOPEA ACUMINATA Merrill. Dalindingan, mangachapuy.
Hopea acuminata MERRILL, Govt. Lab. Publ. 29 (1905) 30; Philip.
Journ. Sci. 1 Suppl. (1906) 98; Enum. Philip. Fl. PI. 3 (1923) 93;
WHITFORD, Philip. Journ. Sci. ~ C 4 (1910) 703; Philip. Bur. For.
Bull. 10' (1911) 75, pl. 80; FOXWORTHY, Philip. Journ. Sci. ~ C 2
(1907) 389; ~ C 4 (1909) 514, pl. 27, fig. 68; ~ C 6 (1911) 264;
~ C 13 (1918) 183; REYES, Philip. Journ. Sci. 22 (1923) 339, pL. SO,
fig. 1; SYMINGTON, Gard. Bull. S. S. 8 (1934) 22.
Hopea maquilingensis FOXWORTHY, Philip. Journ. Sci..~ C 13 (1918)
184.
Tall, slender trees up to 40 m high and 1 m in diameter.
Branchlets nearly black when dry, glabrous, striate. Leaves
broadly lanceolate, submembranous, glabrous, shiny above, narrowly acuminate at apex, rounded and inequilateral at base, 4
to 8 cm long, 2 to 3 cm wide; secondary nerves 8 to 10 pairs,
rather prominent beneath; petioles 5 to 8 mm long, rugose, glabrous. Inflorescences grayish stellate-pubescent, axillary and
terminal panicles, 5 to 6 cm long or less, spicate branches unilateral, 1.5 cm long or less. Flowers small, light-colored, fragrant.

26 Tom. cit., p. 285.