Plants to 3 m tall. Rhizome short, tuberous, 2.5–3.5 cm diameter. Leaves: sheaths sometimes lanuginose or glaucous; lamina sometimes pluriplicate, (narrowly) ovate to (narrowly) elliptic, 20–35(–50) by (7–)15–25 cm, base obtuse to narrowly cuneate, apex acute and shortly acuminate. Inflorescence often branched, with (1- or) 2‑flowered cincinni; pedicels up to 1 cm long, to 1.5 cm in fruit; primary bracts 7–15 cm long, acute; branch bracts 3–6 cm long, obtuse to acute; floral bracts (broadly) obovate-elliptic, 0.8–2.5 cm long, obtuse to irregularly truncate, persistent; bracteoles narrowly (ovate-) triangular, (0.5–)1.2–1.5(–2) cm long, acute; bracts, bracteoles, and sepals generally glaucous. Flowers deep red to yellow, erect, 3.5–6.5(–7.5) cm long; sepals whitish green to red or purple, narrowly ovate-triangular, 0.8–2 by 0.3–0.5 cm, acute; corolla red to yellow, (3–)4–5.5(–6.5) cm long, petals erect, narrowly triangular, 2.5–4.5(–5) by 0.3–0.7 cm, acute; staminodes 3 or 4, red to yellow, 4.5–5.5(–7.5) cm long, free part narrowly obovate to narrowly triangular, 2.5–4.5(–5) by 0.3–0.8(–1) cm, erect, 1 recurved and sometimes dotted or striped; stamen red to yellow, free part narrowly elliptic, 1.5–2.5(–4) by 0.2–0.6 cm, theca 0.5–1.2 cm long; style red to yellow, free part linear to club-shaped, 1.5–4.5 by 0.1–0.3 cm. Fruit bright green, covered by green to purple tubercles, ellipsoid to subglobose or obovoid, 1.5–4(–5.5) by 1.5–2(–3.5) cm. Seeds subglobose, 4–8 mm diameter.