Tree 30-50 m tall, the trunk 37.5-45 cm in diam, the branchlets minutely puberulous when young, becoming glabrous and lenticellate. Leaves opposite or subopposite, the petiole canaliculate above, 5-10 mm long, minutely puberulous, the stipules 3-4 mm long, the stipular glands crateriform with the margins light brownish, with 2 smaller accessory glands 1-3 mm below the main ones; blade ellip-tic, narrowly elliptic or narrowly elliptic-obovate, attenuate and asymmetrically sub-cordate at the base, rather abruptly long-acuminate at the apex, up to 15 cm long and 6 cm wide, rigid-chartaceous, glabrous except the very minutely puberulous midvein on both sides and the pubescent axils of the major lateral veins below. Inflorescences mostly terminal, thyrsoid with dichasia (3-flowered cymes) as par-tial inflorescences, the rachis as the peduncles and pedicels minutely puberulous, the pedicels up to 15 mm long. Flowers with the calyx cinereous-puberulous, the spurred lobe conically conduplicate-convolute, ca 9-10 mm long (without spur), the spur saccate, ca 5-6 mm long, the 2 lobes adjacent to the spurred one ? cir-cular and 4-5 mm long, the 2 remaining lobes broadly obovate, + convolute, ca 7-8 mm long; petal rose-pink, purple in age, very broadly obovate, deeply obcordate, shortly unguiculate, ca 2.5 cm long and wide, the claw shortly sericeous outside; stamen glabrous, the filament ca 8 mm long, the anther dorsifixed somewhat above the base, ca 2-2.5 mm long; ovary with the style glabrous except at the base, the stigma capitate. Capsule (according to Stafleu, loc. cit.) ca 5 cm long, the valves oblong, obtuse on both sides, the exocarp minutely verruculose and ca 3 mm thick, the endocarp thin, the 3 valves remaining connate at the base after dehis-cence.
Home