xm,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 HASSELTII 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 Leafl. Phil. Bot. 6 (1913) 



1950. Balaou (Agusan). 



Mindanao, Zamboanga, For. Bur. 2S8S7, 22007 VUlamil, For. Bur. 22761 

 Nave; Agusan Province. Biliran, Bur. Sci. 181*87 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. 21198 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, 



