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7. Cystacanthus vitellinus (Roxburgh) Y. F. Deng, Fl. China. 19: 477. 2011.
糙叶火焰花 cao ye huo yan hua
Basionym: Justicia vitellina Roxburgh, Fl. Ind. 1: 117. 1820; Endopogon vitellinus (Roxburgh) Nees; J. asperula (Nees) G. Loddiges; Phlogacanthus asperulus Nees; P. vitellinus (Roxburgh) T. Anderson; Sphinctacanthus siamensis C. B. Clarke.
Shrubs to 1.5 m tall. Stems terete, glabrous. Petiole 1-5 cm; leaf blade broadly ovate to oblong-lanceolate, 10-30 × 6-11 cm, abaxially slightly pubescent or glabrescent, adaxially glabrous or slightly pubescent, secondary veins 9-11 on each side of midvein, base attenuate and decurrent onto petiole, margin slightly undulate, apex acute to acuminate. Thyrses 10-20 cm; bracts minute; bracteoles linear, ca. 1.5 × 0.5 mm, pubescent. Pedicel 1-3 mm. Calyx ca. 6 mm, pubescent; lobes linear-lanceolate. Corolla purplish red or white, 1.2-1.8 cm, bent to 90º and abruptly inflated at middle, outside pubescent. Stamens ca. 1 cm; filaments hirsute at base; anther thecae oblong, ca. 2 mm, connective glabrous; staminodes very small. Ovary glabrous; style 1-1.5 cm, glabrous; stigma slightly 2-cleft. Capsule clavate, ca. 2 cm, 8-seeded. Seeds ovate in outline, ca. 2.5 × 2 mm.
Forests; 200-1100 m. Yunnan [Bhutan, India, Myanmar].
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