薄叶鸢尾 bo ye yuan wei

Iris sichuanensis Y. T. Zhao.

Plants with fibers and sheathlike leaves at base. Rhizome swollen, tuberlike, 1.2--1.5 cm in diam. Roots thick. Leaves grayish green, linear, 25--35 × 0.5--1 cm, midvein distinct, apex long acuminate. Flowering stems 10--35 cm; spathes 3 or 4, green, broadly lanceolate, 4--8 × 1.5--1.8 cm, 2-flowered, apex acute to acuminate. Flowers violet, ca. 6 cm in diam.; pedicel very short. Perianth tube 4--5 cm; outer segments obovate, 5--5.5 × ca. 2 cm, beard yellow; inner segments erect, narrowly lanceolate, ca. 4 × 1 cm. Stamens ca. 4 cm. Ovary 2.5--3 cm. Style branches ca. 4.5 cm. Capsule ovoid-cylindric, ca. 4 × 1.3 cm, apex acute. Fl. Apr--Jun, fr. May--Jul.

* Grasslands on hillsides, rocky slopes; 2600--3200 m. Gansu, Sichuan.