xm.c,3 Foxworthy: Philippine Dipterocarpaceae, II 179 



considered as sometimes in the section Angulati and sometimes in the 

 section Alati. 



Luzon: Tayabas, Camarines, and Albay Provinces. Negros. Basilan. 



14. DIPTEROCARPUS BASILANICUS sp. nov. 



Arbor magna. Folia chartacea, elliptica, apice acuminatis, 

 basi cuneatis, nervis secundariis utrinque 13, tertiariis plurimis, 

 parallelis et reticulars, obscuris, 6 ad 11 cm longa, 2 ad 5.5 cm 

 lata, margine undulatis, subtus pubescentibus. Floribus ignotis. 

 Fructus 5-angulatis, 15 ad 18 mm longis, aliis late linearibus.' 

 oblongus e basi 3-nervis, 7 ad 9 cm longis, 14 ad 21 mm latis. 



A tree 40 m tall and 50 cm in diameter. Leaves and twigs 

 finer than in most Philippine species. Leaves chartaceous, ellip- 

 tic, with acuminate apex and cuneate base. Under side of leaves 

 and young twigs pubescent. Terminal buds clothed with long, 

 pilose, silky hairs. Secondary nerves about 13. Leaves 6 to 

 11 cm long and 2 to 5.5 cm wide. Fruit 5-angled, 15 to 18 

 mm long and of about the same diameter. Angles of fruit more 

 or less distinctly developed into wings, but thick and hard. 



Basilan, Mount Basilan, at 500 to 600 meters elevation, For. Bur. 

 18S95 Miranda, August 27, 1912 (type), For. Bur. 18896 Miranda, Bur. 

 Sci. 16128 Reillo, August, 1912. 



The wood is said to be harder than that of ordinary apitong and is 

 used for general construction. 



This species suggests a form referred to by King in Journ. As Soc 

 Beng. 62 » (1893) 99: "A Perak species (Herb. Scortechini mixed with 

 No. 1478) represented by fruits something like those of D. fagineus 

 Vesque, but with the calyx-tube winged, not angled." It is evident that 

 the relationship here must be very close, but identity is doubtful. This 

 species is our only representative of the § Angulati It seems noteworthy 

 in that section in that the angles are developed until they resemble wings. 

 It is most closely related to Dipterocarpua fagineus Vesque, of the Malay 

 Peninsula and Borneo, but differs from that species in having slightly 

 smaller fruits, which are more sharply angled and with more scantily 

 developed venation in the fruit wings. 



15. DIPTEROCARPUS GRANDIFLORUS Blanco. Apitong. 



Luzon: Cagayan, Isabela, Ilocos Sur, Abra, Benguet, Pangasinan, 

 Nueva Ecija, Zambales, Bataan, Bulacan, Rizal, Laguna, Tayabas, Cama- 

 rines, Albay. Mindoro. Sibuyan. Panay, Capiz. Necros. Samar. Bi- 

 liran. Palawan. Mindanao: Agusan, Misamis. 



16. DIPTEROCARPUS PHILIPPINENSIS sp. nov. 



Arbor magna. Fructus alatus D. marginato Korth. similis sed 

 minoribus. 



A large tree 30 m tall and 75 cm in diameter. Fruit winged, 

 leaves of seedlings similar to those of D. vernicifiuus Blanco. 

 Mature leaf (picked up under the tree) ovate-lanceolate, acute, 



