线叶爵床 xian ye jue chuang

Rostellularia linearifolia Bremekamp, Proc. Kon. Ned. Akad. Wetensch. C 60: 5. 1957; Justicia linearifolia (Bremekamp) H. S. Lo (1997), not Lamarck (1785); J. linearifolia subsp. liangkwangensis (H. S. Lo) H. S. Lo; J. neolinearifolia subsp. liangkwangensis (H. S. Lo) N. H. Xia & Y. F. Deng; R. linearifolia subsp. liangkwangensis H. S. Lo.

Herbs to 50 cm tall. Stems 4-angled, sulcate, pubescent. Petiole 2-4 mm, pubescent; leaf blade linear, 2-4 × 0.2-0.5 cm, sparsely pubescent, secondary veins 3-5 on each side of midvein, base rounded, margin entire, apex acute. Spikes terminal, 2-3.5 cm; rachis sparsely hirsute to subglabrous; bracts linear, ca. 6 × 1 mm, subglabrous, apex acute; bracteoles linear, ca. 5 × 1 mm, sparsely hirsute, apex acute. Calyx ca. 6 mm, outside sparsely hirsute, 4-lobed almost to base; lobes linear, apex acuminate. Corolla purplish red, ca. 8 mm; lower lip 3-lobed; upper lip 2-lobed. Staminal filaments ca. 5 mm, sparsely hirsute; anther thecae superposed, lower one spurred at base. Ovary hirsute; style ca. 8 mm, basal portion hirsute. Capsule ca. 6 mm, pubescent. Seeds ovate in outline, ca. 1 × 1 mm, verrucose.

Wetlands, trailsides. Guangdong, Guangxi, Yunnan [Thailand].