1. Amianthium muscitoxicum (Walter) A. Gray, Ann. Lyceum Nat. Hist. New York. 4: 122. 1837 (as muscaetoxicum).
Melanthium muscitoxicum Walter, Fl. Carol., 125. 1788 (as muscaetoxicum); Chrosperma muscitoxicum (Walter) Kuntze; Zigadenus muscitoxicus (Walter) Regel
Stems 3–12(–14) dm. Leaves 10–45(–60) × 0.5–2.8 cm. Inflorescences densely ovoid in flower, cylindric in fruit, 3–13 × 2–3 cm; bracts ovate, 1–2 mm. Tepals 5–7 mm; pedicel (7–)10–17(–20) mm. Capsules 5–7 mm. Seeds 4–5 × 1.5–2 mm. 2n = 32.
Flowering late spring--summer. Dry or mesic wooded slopes, meadows, savannas; 0--1500 m; Ala., Ark., Del., D.C., Fla., Ga., Ky., La., Md., Miss., Mo., N.J., N.Y., N.C., Okla., Pa., S.C., Tenn., Va., W.Va.
