Hibiscus sabdariffa

Species: Hibiscus sabdariffa

English Name: Roselle

Chinese Name: 玫瑰茄

Family: Malvaceae

Herbs annual, erect, to 2 m tall; stems purplish, robust, glabrous. Stipules filiform, ca. 1 cm, sparsely villous; petiole 2-8 cm, sparsely villous; leaf blade dimorphic; blades on proximal part of stem ovate, those on distal part of stem palmately 3-lobed, lobes lanceolate, 2-8 × 0.5-1.5 cm, base rounded or broadly cuneate, margin serrate, apex obtuse or acuminate, glabrous; basal veins 3-5, glanduliferous along midrib on abaxial surface. Flowers solitary, axillary, subsessile. Epicalyx lobes 8-12, red, lanceolate, connate at base, 5-15 × 2-3 mm, sparsely long hirsute, with spiny appendix near apex. Calyx purplish, cup-shaped, connate for ca. 1/3 length, ca. 1 cm in diam., fleshy, sparsely spiny and coarsely hairy, lobes 5, triangular, 1-2 cm, acuminate. Corolla yellow with dark red center, 6-7 cm in diam. Capsule ovoid-globose, ca. 1.5 cm in diam., densely coarsely hairy. Seeds reniform, glabrous. Fl. summer-autumn.

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– Wu ZY, Raven PH, Hong DY (eds) (2007). Flora of China, Volume 12: Hippocastanaceae through Theaceae. Science Press, Beijing, and Missouri Bot Garden Press, St. Louis