Rhizomes very short, producing slender stolons. Leaves linear, 12--25 cm × 2--3 mm, midvein absent, apex obtuse or acute. Flowering stems simple, 20--30 cm, slender; spathes 2, purple, lanceolate, 2.5--3.3 × ca. 1.2 cm, rigid, 1-flowered. Flowers sessile, yellow, flat, 5--5.5 cm in diam. Perianth tube 3--4 mm; outer segments spreading horizontally, elliptic or obovate, ca. 3.5 × 2.5 cm, beard narrow, sparse; inner segments spreading horizontally, narrowly ovate, 2.8--3 × ca. 1.6 cm. Stamens ca. 1.3 cm. Ovary ca. 1.5 cm. Style branches spreading, ca. 1.5 cm × 8 mm; terminal lobes irregularly toothed. Fl. Apr--May, fr. Jun--Aug.
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