Epiphytic shrub or liana which later can become a fairly slender tree. Leaves petioled, oblong to lanceolate, (9-)12-25 by 4-8 cm, thickly coriaceous, base cuneate or slightly contracted, acute, apex rather abruptly and shortly acute acuminate; nerves c. 15 pairs, on either side nearly always inconspicuous to invisible, or slightly prominent on the lower surface; petiole 1.5-4.5 cm, mostly terete, auriculate; axillary scale largely free from the petiole, 0.5-1 cm long, rounded. Flowers solitary; pedicel very robust, 0.75-2.5 cm, thickened upwards, bearing in its upper part (2-)3 closely approximate, decussate pairs of appressed, coriaceous, ovate, 2-6 cm long bracteoles which enclose the lower part of the calyx (inner bracteoles distinctly larger than outer ones). Calyx 7-9 cm long, divided to quite near its base, segments oblong, rounded, leathery, very concave. Corolla inside green with 5 broad cream streaks, tube at base tubular, abruptly widened in its upper third part, 14-15 cm, the upper part inside rather densely tomentose. Anthers oblong, very thick, 1.5-1.75 cm, cells free to distinctly below their middle. Stigma peltate-cupshaped, 0.75 cm ø. Fruits ovoid, about 4.5 by 4 cm; calyx spreading.
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