Flowers always unisexual, concolorous white to reddish (on Mt Leuser also with a white tube and brown lobes). Buds ovoid-pyriform, up to 12 by 7 cm; open flowers infundibuliform, 18-35 cm in diam. Perigone lobes 6-12 mm wide at base, gradually narrowed, basal hairy part c. 3 cm long, gradually narrowed into the geniculate, c. 2.5 cm by 1-2 mm apical appendage, the upper part of c. 6.5 cm without long hairs. Perigone tube inside long hairy below, the upper c. 2 cm with short hairs with an antler-like shape, male flowers with 50-60 lines, corresponding to the number of anthers. Central column c. 2 cm long, in female buds with a c. 0.5 by 1 cm diameter stipe, and a globular more or less depressed apex, 1-1.5 by 1.5-2 cm diameter, apical cavity c. 1 cm wide and deep. Male flowers with a c. 7 cm broad ring of 50-60 anthers around the base of the globular disk; stipe with c. 50-60 ridges; ovary rudimentary. Columnar disk of female flowers with a c. 7 mm wide stigmatic hairy zone along base; stipe not ridged; ovary c. 1.5 by 3 cm diam. Fruit not seen. Fig. 10. Fig. 11.
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