云南开口箭 yun nan kai kou jian

Tupistra yunnanensis F. T. Wang & S. Yun Liang in F. T. Wang & T. Tang, Fl. Reipubl. Popularis Sin. 15: 249. 1978.

Rhizome ascending, yellow-brown, terete, 1--2.5 cm thick, stout; nodes dense. Leaves 3--5, basal, nearly distichous equitant; petiole indistinct; leaf blade lorate-lanceolate, 40--95 × 3--5.5 cm, margin crisped, apex acuminate. Spike 4.5--11 cm, many flowered; peduncle 8--12 cm; fertile bracts lanceolate, 6.5--9 × 1.5--3 mm, those in proximal 1/2 of spike usually with 1 or 2 teeth at middle of margin. Perianth subcampanulate, 7--8 mm; tube 4.5--5 mm, throat with a thin ring of widened filaments; lobes white, deltoid-lanceolate, 2.5--3 mm, fleshy, apex cuspidate-acuminate. Filaments with very short free part. Ovary ovoid, 2--2.5 × ca. 2 mm. Style inconspicuous. Berry red at maturity, ovoid-globose, 0.9--1.4 cm × 7--9 mm. Fl. May, fr. Oct--Nov. 2 n = 38*.

* Forests; 1200--2800 m. NE Yunnan.