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General DescriptionTrees, to 30 m tall, to 20 cm d.b.h. Twigs glabrous or nodes ferruginous to yellowish brown pubescent when young. Stipular scar 0.5-1.2 cm. Petiole 1.8-3.5 cm; leaf blade narrowly ovate or elliptic, 10-26 cm long, 4-10 cm wide, leathery, adaxially glabrous, midvein abaxially reddish brown pubescent or scattered appressed hispidulous, basal ca. 2/3 tapered to base, apex acuminate to caudate-acuminate. Brachyblasts thick and strong, 8-10 mm in diameter; bract scar 1, ca. 1 cm basal to tepals. Flowers fragrant. Tepals 9-12; outer 3 tepals abaxially brown and adaxially reddish to purplish red, obovate-oblong, ca. 7 cm, curved outward; middle and inner tepals milky whitish pink, obovate-spatulate, 5-7 cm, erect, basal ca. 1/4 tapered and clawed. Stamens 1-1.8 cm; filaments nearly as long as exserted part of connective; connective exserted and forming a triangular mucro; thecae slightly distinct. Gynoecium terete, 5-6 cm; carpels glabrous, abaxially shallowly furrowed. Fruit purplish red when fresh, ovoid-ellipsoid, 7-12 cm; mature carpels tuberculate, completely dehiscing along dorsal sutures.