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Flowers brilliant orange red, with dark red throat; corolla tube cylindrical, 16–20 mm. long; diam. of limb at least three times the diam. of the throat; anterior lobe of limb enlarged, nearly circular.
Perennial herb, up to 30 cm. high, the branches erect or ascending; the basal organ a swollen stem arising from a subterranean tuber of approximately the same diam.
Leaves lanceolate, up to 8 cm. long and 2 cm. broad, subentire, undulate or slightly dentate, usually with 4 pairs of lateral veins.
Seeds 1–2 in each loculus.
