Harperocallis flava Mcdaniel

Plants 22–55 cm, glabrous. Leaf blades linear, 0.2–0.3 × 5–21.5 cm, margins entire. Flowers: tepals yellow adaxially and greenish abaxially, becoming green to coppery, golden brown abaxially and purple-margined adaxially after anthesis,10–12-veined; outer tepal (10–)12–15 × (2.5–)3–3.5 mm; inner tepal (8–)9–12 × (2–)2.5–3.5 mm; stamens 8–9 mm; anthers 2.5–3.5 mm; styles 0.5–1 mm. Capsules 8–10 mm. Seeds 2–3 mm.