折叶萱草 zhe ye xuan cao

Plants 40--80 cm tall. Roots slightly fleshy, with large, oblong, swollen, tuberous part near tip 0.8--1.5 × 2.5--5 cm. Leaves linear, 45--50 cm × 6--8 mm, usually folded, base surrounded by fibrous remains of older leaves. Scape nearly as long as leaves, hollow or solid; main axis distinct; sterile bracts linear, long. Inflorescence branches 3--7; helicoidal cymes 2- or 3-flowered, with 1 cyme usually oppositely branched, 2--20-flowered; bracts lanceolate, 0.5--2.5 cm × 5--7 mm. Pedicel 2--6 cm. Flowers small, opening during day. Perianth orange; tube 1.5--2.5 cm; segments 4--5.5 × 1--1.4 cm. Filaments 3--3.5 cm; anthers 3--4 mm. Capsule unknown. Fl. Jul--Sep.

* Pinus forests, forest margins, thinly forested hilltops, grassy slopes; 1500--3200 m. Sichuan, Yunnan.