4. Luisia hancockii Rolfe, Bull. Misc. Inform. Kew. 1896: 199. 1896.
纤叶钗子股 xian ye chai zi gu
Stems tufted, ascending, to 20 cm, 3-4 mm in diam., rigid, internodes 1.5-2 cm. Leaves facing all directions, 5-9 cm × 2-2.5 mm, obtuse. Inflorescence 1-1.5 cm, usually 2- or 3-flowered; floral bracts broadly ovate, 1.5-2 cm, fleshy, obtuse. Flowers fleshy, opening widely, yellowish green, lip hypochile purple-red; pedicel and ovary 1-1.2 cm. Dorsal sepal obovate-oblong, ca. 6 × 3 mm, obtuse; lateral sepals oblong, conduplicate, ca. 7 × 3 mm, dorsally carinate and becoming winged at apex, margin incurved, apex obtuse. Petals slightly oblique, oblong, ca. 6 × 3 mm, obtuse; lip nearly ovate-oblong, ca. 7 mm, base ca. 4 mm wide, without a distinct boundary between epichile and hypochile; hypochile slightly concave, base with lateral lobes ca. 0.5 mm; epichile bilobed, emarginate at apex, margin crenate or undulate, adaxially with 3 or 4 papillate longitudinal ridges. Column ca. 2 mm; stipe obovate, ca. 1 mm; viscidium transversely oblong, ca. 1.6 mm, thick. Capsule ellipsoid-cylindric, 1.5-2 cm. Fl. May-Jul, fr. Aug.
● Lithophytic on cliffs along valleys, epiphytic on tree trunks in open forests; 200-300 m. Fujian, Hubei, Zhejiang.