海南假砂仁 hai nan jia sha ren

Plants 1--1.5 m tall. Leaf sheath conspicuously concave veined; ligule purple, 2-cleft, ca. 3 mm; petiole 5--10 mm; leaf blade oblong or elliptic, 16--30 × 4--8 cm, glabrous, base acute, apex caudate-acuminate. Spikes turbinate, ca. 3 cm in diam., ca. 20-flowered; peduncle 5--10 cm; bracts purple, ovate, 1--2 cm; bracteoles tubular, ca. 2 cm. Calyx tinged red at base, ca. 1.7 cm, base villous, apex 3-toothed. Corolla tube slightly longer than calyx; lobes oblanceolate, ca. 1.5 cm, apex concave. Labellum white with purple midvein and veins, deltoid-ovate, ca. 1.5 × 1 cm; claw 5--6 mm. Anther ca. 6 mm; connective appendage semiorbicular, ca. 8 × 4 mm, margin shallowly crenate. Ovary yellow villous. Capsule ellipsoid, with branched, soft spines 2--3 mm. Fl. Apr--May, fr. Jun--Aug. 2 n = 48*.

* Forests. Hainan.