xiii, c, 3 Foxworthy : Philippine Dipterocarpaceae, II 177 
4. DIPTEROCARPUS GRACILIS Blume. Anahaun, apitong (Tag.). 
Luzon, Camarines Province. Mindoro. This species is not known 
from any other locality in the Philippines. 
5. DIPTEROCARPUS H ASSELTI I Blume! Panao, pagsahingan (Tag.). 
Luzon, Nueva Ecija and Laguna Provinces. Negros. Mindanao, Zam- 
boanga. 
6. DIPTEROCARPUS VERNICIFLUUS Blanco. Panao, apitong, pagsahin- 
gan (Tag.), kamuyao (Cag.), malpaho (Pol.). 
Luzon: Cagayan, Isabela, Ilocos Norte, Ilocos Sur, Pangasinan, Nueva 
Ecija, Bulacan, Pampanga, Zambales, Bataan, Rizal, Laguna, Tayabas, 
Camarines, Albay. Polillo. Marinduque. Mindoro. Leyte. Palawan. 
Mindanao: Agusan (?), Surigao, Davao, Cotabato, Zamboanga. 
7. DIPTEROCARPUS SUBALPINUS Foxw. in Lead. Phil. Bot. 6 (1913) 
1950. Balaou (Agusan). 
Mindanao, Zamboanga, For. Bur. 23837, 22007 Villamil, For. Bur. 22761 
Nave; Agusan Province. Biliran, Bur. Sci. 18U87 McGregor. 
This species differs from Dipterocarpus vernicifluus in its more glabrous 
leaves and buds and generally smaller leaves, and from D. hasseltii in the 
smaller leaves and fruit and greater number of secondary veins. The 
three short wings of the fruit are also shorter than the similar wings in 
D. hasseltii and are not expanded nor reflexed as is the case in that species. 
8. DIPTEROCARPUS CAUDATUS sp. nov. Apitong (Tag. and Bicol). 
Arbor magna. Folia longe caudato-acuminata, 9 ad 13 cm 
longa, 2.5 cm lata, glabra; nervis secundariis circa 10; petiolo 
1.1 ad 1.5 cm longo. Fructus globosus. 
This form is distinct by its small-sized, long-caudate-acuminate 
leaves, which are glabrous, elliptic, cuneate at base, 9 to 13 cm 
long, 2.5 to 5 cm wide ; the long-caudate acumen about 1.5 cm 
long; secondary veins are about 10 pairs; petiole 1.1 to 1.5 cm 
long; stipules linear, ferruginous-pilose. 
Luzon, Camarines Province, For. Bur. 21193 Alvarez, March 28, 1914 
(type) ; Albay Province, For. Bur. 10607, 10610 Curran, 1908. 
Very old and very young fruits picked up under the tree show this 
to belong to the section Sphaerales, and the leaves are sufficiently distinct 
to warrant its description as a new species. 
9. DIPTEROCARPUS PERTURBINATUS sp. nov. 
Arbor magna. Folia elliptica, glabra, coriacea, a basi cuneata 
vel rotundata, 6.5 ad 11 cm longa, 4 ad 6.5 cm. lata; petiolo 
2.5 ad 3.5 cm longo. Fructus turbinatus, 2.5 ad 3.5 cm diametro. 
Calycis segmentis 2 majoribus oblongis, 11 ad 13 cm longis, 3 
cm latis. 
A large tree, with glabrous leaves and twigs and turbinate 
fruits. Leaves coriaceous, elliptic, acute or slightly acuminate 
at the apex, cuneate or rounded at the base, margins crenate, 
6.5 to 11 cm long, 4 to 6.5 cm wide; petiole 2.5 to 3.5 cm long; 
secondary veins about 10 pairs. Fruit 2.5 to 3.5 cm in diameter, 
