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Small perennial shrubs or subshrubs. Lvs opposite and decussate, rarely whorled, sometimes subrosulate, free, simple, entire. Infl. a terminal, thyrsoid or paniculate cyme, usually on a long scape, naked except near base. Fls 5-merous, pendent in bud and usually remaining so. Sepals free or connate at base, equal. Petals united to form a cylindric or urceolate tube in lower part, fleshy, greenish yellow to deep red; lobes spreading to revolute, generally < tube. Stamens 10, in 2 rather unequal whorls, ± epipetalous, usually ± exserted. Scales forming a cup with the associated carpel. Carpels 5, sometimes slightly fused at base. Seeds numerous.
Herbs or shrubs. Leaves opposite, entire, usually fleshy, sessile or petiolate. Inflorescence a terminal corymbose cyme. Flowers 5-merous, mainly pendulous. Calyx 5-lobed. Corolla 5-lobed; tube urceolate or cylindric, sometimes slightly 5-angled; lobes twisted in bud, spreading or recurved. Stamens 10, very rarely 5, arising from corolla-base; filaments filiform, often broadened at the base; anthers oblong, exserted or included. Nectary scales linear, oblong or quadrate. Carpels 5, free or slightly united at the base; ovules numerous; styles slender; stigma obliquely capitate
Corolla gamopetalous, deep red to yellow or greenish; tube subcylindrical, not or ± ventricose at the base, ± 5–angled, usually narrowing to the throat; lobes spreading, reflexed or revolute, spirally twisted in bud.
Leaves opposite and decussate, or verticillate, sometimes subrosulate, sessile or subpetiolate, fleshy, flat to terete, usually entire, persistent or caducuous.
Stamens 10, inserted at the base of corolla–tube, usually exserted; filaments often hairy at the base; anthers ovate to oblong.
Carpels 5, free, many–ovulate; styles usually longer than the ovaries, subulate; stigmas subcapitate.
Succulent undershrubs or shrubs, completely glabrous or ± glandular–pubescent, tomentose or mealy.
Inflorescences terminal on a H; long peduncle, cymose, panicled or racemose.
Flowers 5–merous, showy, mostly large, pedicelled and pendulous or sessile.
Calyx shorter than corolla–tube.
Follicles with numerous seeds.
