Corolla 8-11·5 mm. long, yellow-green to yellow or salmon to bright red, reddish-brown throughout or with the lobes darker than the tube on drying; tube 4-angled, finally swollen in the lower half in fruit, contracted but not twisted above the follicles; corolla-lobes 2-3·1 x 1·75-2 mm., suboblong to ovate, rounded or obtuse and apiculate at the apex, flat or folded along the middle, usually not twisted, erect (but not connivent) or subspreading.
Leaves up to 10 x 2(2·8) cm., oblong to oblong-spathulate, rarely oblong-obovate, rounded or obtuse at the apex, crenate, sinuate-crenate or irregularly serrate-lobed at the margin, sessile, but attenuate into a broad, sometimes subpetiolar base, neither connate nor amplexicaul, fleshy, flat, chartaceous and dark brown on drying, decussate, spreading to upright, the uppermost bract-like and appressed to the stem, very caducous.
Stem erect, usually simple or sometimes 2-forked at the top (by abortion of the main axis), up to 7 mm. thick and woody at base, slender upwards, ± distinctly 4-angled, smooth, reddish and covered with a very tenuous whitish bloom, slightly dilatate at nodes, leafless at flowering time at least below; lower internodes 0·5-1·7 cm. long, the upper ones increasing up to 13 cm.
Flowers erect in dense dichotomous cymes forming usually a terminal corymb-like, reddish-brown inflorescence 3-15 x 3-13 cm., or sometimes panicles up to 30 x 17 cm.; branches of the inflorescence opposite or nearly so, upright or erect-patent, the lower ones of the panicles up to 17·5 cm. long; internodes of panicles up to 14·5 cm. long; pedicels 3-4·5 mm. long.
Filaments ± 1·5 mm. long, inserted above the middle of corolla-tube; anthers 0·5-0·8 mm., oblong, orange or reddish, usually all included, the upper ones with the apices ± at corolla-throat level or sometimes half-exserted.
Calyx-tube up to 0·9 mm. long; calyx-lobes 1-1·25 mm. long, oblong-lanceolate to lanceolate or triangular, acute, appressed to the corolla-tube.
Follicles 5·5-6 mm. long, attenuate; styles 0·75-1·25 mm. long, thick, reddish, included.
A perennial (or biennial?) succulent herb, completely glabrous, 0·30-1·60 m. tall.
Scales ± 1·5 x 0·4 mm., linear-lanceolate, subacute.