Corms oblong, 1.5-5 cm × 3-18 mm. Leaves 5-15, base scarcely narrowed into petiole; blade green, linear, 5-15 cm × 2-6 mm, 2-6 mm thick, base 4-10 mm wide, apex narrowly acute, surfaces not or somewhat glaucous. Inflorescences: cincinni 3-15-flowered, 2-10 cm; floral shoots 5-35 cm × 2-4 mm; leaves 7-18, strongly ascending, blade linear (similar to rosette leaf blades), 1-10 cm × 2-10 mm, 2-6 mm thick, apex narrowly acute. Flowers odorless; petals connate 1-2 mm, spreading from near middle, bright yellow (fading pale yellow), often red-lineolate along keel, elliptic-lanceolate, 5-9 × 2-3 mm, apex acute, corolla 12-18 mm diam.; pistils connate 1-2 mm, ascending; ovary 3.5-6 mm; styles 1.5-2 mm. Follicles widespreading, with adaxial margins nearly horizontal. 2n = 34.
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