Epiphytic (rarely terrestrial) shrub or climber. Leaves petioled, (suborbicular to) elliptic to lanceolate or oblong-obovate, 7.5-16 by 3.5-8.5 cm, thickly and rigidly coriaceous, base cuneate, sometimes shortly contracted, apex acute to rounded or even slightly emarginate, and in both latter cases shortly acutely acuminate; nerves 6-7 pairs, at both surfaces inconspicuous or almost so, sometimes slightly sunken above; petiole 0.75-3 cm, exauriculate; axillary scale halfway up to nearly completely adnate to the petiole, 0.5-0.75 cm long, obtuse or rounded, not very conspicuous. Flowers 1(-2), pedicel very thick, 0.5-2 cm, bracteoles 1 or 2 pairs, apical, appressed, 0.5-1 cm long. Calyx slender, (1.5-)2-5 cm long, divided ± halfway down or slightly less. Corolla-tube rather slender, tubular, 7-14 cm. Anthers oblong, 1-1.75 cm, cells free to somewhat below the middle. Stigma capitate to peltate-cupular, 4-5 mm ø. Fruits (oblong) ellipsoid, 4-7 cm, greyish blue; calyx appressed.
Forests on limestone, also along the beach, from sea-level up to 2000 m. Fl. mainly Jan., fr. Jan., Aug., Nov.
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