Plant 1–2 ft. high. Stems glabrous, with two usually sparsely pubescent lines. Leaves in 3–6 moderately distant pairs, somewhat spreading; petiole 1/2–3 lin. long; blade 2–6 in. long, 3/4–4 lin. broad, linear or lanceolate-linear, acuminate or acute, acute or rounded into the petiole at the base, with narrowly revolute scaberulous margins, glabrous or occasionally with a sparse minute pubescence on both sides. Umbels usually two, on long peduncles at the apex of the stem, which is usually destitute of leaves in the upper part umbel solitary in weak plants or in strong plants dichotomously divided, producing a third umbel, 4–6-flowered; peduncles 3–10 1/2 in. long, pubescent down one side; bracts none or minute; pedicels 3/4–1 1/2 in. long, pubescent. Sepals 2 lin. long, lanceolate, acute, pubescent, reflexed. Corolla 5-lobed nearly to the base; lobes 3–4 lin. long, 1 1/2–1 3/4 lin. broad, ovate-oblong, obtuse, reflexed, with revolute margins, glabrous, red or purplish. Coronal-lobes arising 1/4 lin. above the base of the staminal-column and twice as long, bright or dark orange, erect, 4–4 1/2 lin. long, linear-oblong or linear-lanceolate, acute or obtuse, channelled down the face, with a deltoid-subulate tooth 1 lin. long at the middle of each margin, horizontally extended over the top of the staminal-column, and with or without a median tooth on the inner face of the lobe; anther-appendages large, ovate or orbicular, acute or obtuse, inflexed over the top of the style. Follicles 3–3 1/2 in. long, 4–5 lin. thick, lanceolate, tapering into a beak.
