General:
Perennial herb from a slender, 3- to 5-cm long bulb and an elongate, segmented corm; flowering stems 15-30 cm tall, smooth.

Leaves:
Basal leaves 2, bright yellow-green, not mottled, oblong to egg-shaped, 10-20 cm long, smooth, narrowed gradually to broad, slightly winged stalks clasping the stem at the base, the margins entire but somewhat wavy; stem leaves lacking.

Flowers:
Inflorescence usually a solitary flower atop a leafless, unbranched, smooth stem; flowers golden-yellow to cream, nodding, of 6 similar, distinct tepals, the tepals lanceolate, 2-4 cm long, 4-8 mm wide, strongly curved back; stamens 6, anthers white, yellow, or red; pistil 1, 3-chambered.

Fruits:
Capsules, cylindric-club-shaped, erect, 3-5 cm long; seeds several to many (typically 20 to 50), brown, papery.

Source:  The Illustrated Flora of British Columbia