Trees or shrubs with latex. Leaves opposite, petiolate; glands axillary. Cymes terminal or subterminal, dichasial, few to many flowered. Sepals quincuncial, with 5-10, basal, scalelike glands inside. Corolla salverform, funnelform, subrotate, or rotate, tube cylindric to campanulate; lobes overlapping to left; corona ligulate, fringed, or cup-shaped, entire or subentire at apex, shallowly or deeply divided, sometimes absent. Stamens inserted at middle, apex, or rarely base of corolla tube; anthers sagittate, connivent and adherent to pistil head, exserted, spurred at base; disc absent. Ovaries 2, distinct or connate; ovules numerous in each locule. Style filiform; pistil head ovoid, usually dilated at base. Follicles 2, connate or divaricate. Seeds narrowly fusiform, with an apical coma directed toward fruit base, beakless.
Seeds numerous, narrowly fusiform, not rostrate, with an apical coma directed towards the base of the fruit.
Fruit composed of two follicles; follicles connate at the extreme base and sometimes also at the apex (not in F.Z. area), terete to laterally compressed, dehiscent throughout by an adaxial slit.
Shrubs or trees, occasionally climbers (not in F.Z. area).
Inflorescence terminal, aggregated, dichasial or monochasial, few- to many-flowered.
Leaves opposite, with colleters in the axils, petiolate; lamina eglandular.
Sepals almost free, imbricate, with 1–2 alternate colleters.
Flowers actinomorphic except for the subequal sepals.
Stamens exserted or included (not in F.Z. area); anthers narrowly triangular, partly fertile, introrse.
Corolla subrotate to subinfundibuliform, occasionally infundibuliform or hypocrateriform; tube cylindrical to campanulate, constricted at or near the mouth or not; lobes overlapping to the left; corona variously shaped, only absent in the Asian W. religiosa.
Ovary composed of 2 basally free or slightly connate carpels, united at the apex by the style; style often split at the base and widened at the apex; clavuncula coherent with the anthers, subcapitate or subcylindrical, with a basal collar; stigma bi-apiculate, minute.
Leaves opposite, with colleters in the axils
Inflorescence terminal, dichasial or monochasial, few to many-flowered
Shrubs or trees, occasionally climbers (not in our area); white latex present
Ovary of 2 carpels, free or slightly connate at the base, united at the apex by the style; pistil head coherent with the anthers, subcapitate or subcylindrical, provided with a basal collar, stigmoid apex minutely bifid
Fruit of two follicles, completely connate (not in our area) or only at the extreme base and sometimes at the apex, dehiscent throughout by an adaxial slit
Seeds numerous, narrowly fusiform, not beaked, with an apical coma directed towards the base of the fruit; testa thin, smooth; endosperm absent.
Sepals almost free, imbricate, with 1–2 alternate colleters within
Corolla subrotate to infundibuliform; tube cylindrical to campanulate; lobes overlapping to the left; corona variously shaped