Glabrous pruinose perennial; stem erect or decumbent at the base, 0.3–1.2 m. high.. Leaves petiolate; blade narrowly to broadly ovate, up to 10 cm. long, 7 cm. wide, apex acute to obtuse, base cuneate, margins bluntly serrate to crenate, rarely subentire, glaucous or glaucescent, sometimes with maroon or purple spots beneath; petiole 0.5–2.5 cm. long, slightly flattened and grooved above, not broadened at the base, often ± slightly constricted at point of attachment and easily detachable from the stem.. Inflorescence a paniculate cyme 25 cm. or more long; pedicels 2–5(–8) mm. long.. Calyx-lobes linear-lanceolate to linear-subulate, (2–)3–6 mm. long, 1–2 mm. wide, connate at the base for (0.2–) 0.5–1 mm.. Corolla orange-yellow to pink, vermillion, crimson or scarlet, lower part of tube greenish; tube (5–)10–12(–14) mm. long; lobes lanceolate-ovate, (3–)5–6.5 mm. long, (1–)1.8–2.5 mm. wide, acute, mucronate (mucro 0.2–1 mm. long).. Anthers with apical glands 0.05–0.1 mm. in diameter; episepalous stamens 1–2 mm. included within the tube, anthers oblong (0.6–)0.85–0.9 mm. long, 0.55–0.6 mm. wide; epipetalous stamens 0–1 mm. included within the tube, anthers oblong (0.55–) 0.7–0.75 mm. long, 0.5–0.6 mm. wide.. Nectary scales linear, 2–3.5 mm. long.. Carpels linear-lanceolate, (4.5–)6.5–8(–10) mm. long, terminating in styles 1–2 mm. long.
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