长穗开口箭 chang sui kai kou jian

Rhizome 2--3 cm thick, stout; nodes dense. Leaves 4--6, basal, nearly distichous equitant; petiole 10--20 cm; leaf blade oblanceolate, 90--150 × 12.5--18 cm, glabrous, apex acuminate. Spike 18--25(--35) × 1.5--2 cm, densely many flowered; peduncle 20--33 cm; bracts 2 per flower, pink, 3--7 × 3--6 mm, membranous. Perianth adaxially white turning yellow, abaxially pale purple, shortly campanulate, 1--1.3 × 1.3--1.8 cm, fleshy; tube 3--4 mm; lobes recurved, oblong-ovate, 7--9 × 3--4 mm. Filaments basally widened, free part ca. 1 mm. Ovary subglobose. Style 7--8 mm; stigma peltate, suborbicular, dilated, 5--7 mm in diam., 3-lobed. Fl. Nov.

* Forests on limestone slopes along valleys; 300--400 m. WC Guangxi (Long’an Xian).