November 21, 1913] Dipterogarpaceae from the Agusan Region 1951 



lary or lateral, few inches long, the zigzag yellowish green 

 subpendant stalks few branched; fruits pendant, the nut portion 

 subglaucous green, their calyx lobes reddish margined; the 2 

 ruber to purpureus ears only slightly curved, the exserted or 

 apical portion of the seed yellowish. — "Balaou" in Manobo. 

 All species of Dipterocarpus appear exceedingly pretty when in 

 full mature fruiting state, and the flowers of most species 

 sweetly scent the woods or forests. 



Dipterocarpus obconicus Foxw. n. sp. 



Arbor magna, Dipterocaiyo gracile similis sed fructus ob- 

 conicus vel turbinatus. 



Leaf form and venation and hairyness of the buds 

 corresponding very closely to those of Dipterocarpus gracilis Blume, 

 tigured in F. Javae, t. 5. Young twigs and petioles stellate 

 pubescent. Fruits differing from that of Dipterocarpus gracilis in 

 having an obconical base, the larger broad wings and the very 

 scantily developed short wings. The fruit is borne on a 

 thick obconical pedicel 5 — 7 mm long. The fruit is 15 — 20 

 mm in diameter and 15 — 20 mm tall. There is a very large 

 stylopodium, which projects beyond the calyx tube. The two 

 long wing3 are slightly inaequilateral, 11—13 cm long and 

 2.5 — 3 cm wide; with three principal longitudinal veins and 

 very prominent irregular cross veins; the three short wings 

 are only very slightly developed. They are usually not more 

 than 1 — 3 mm long and of about the same width, with a 

 portion of the margin reflexed. 



No. 13496, Cabadbaran (Mt. Urdaneta), Province of Agusan, 

 Mindanao, August, 1912. 



The field notes with this number are as follows: — "Large 

 tree on a very steep heavily forested ridge near a streamlet 

 at 750 feet altitude; trunk straight, terete, 4 feet in diameter, 

 75 feet high, mainly branched toward the top and forming 

 a flatly elongated crown; wood rather hard, odorless and tasteless, 

 with a clear resin, whitish but dull brown on the surface, 

 nearly latericius otherwise; branches crookedly rebranched, 

 ascending, the ultimate ones rather numerous and lax; leaves 

 coriaceous, ascending, folded and tips strongly recurved, mar- 

 gins rugose, shining above, a trifle paler green beneath; bud 



