Melampodium leucanthum
Fl. N. Amer. 2: 271. 1842.
Illustrated
Perennials or subshrubs, 12–40(–60) cm. Leaf blades lanceolate, linear-oblong, or linear, 20–35(–45) × 1–10(–12) mm, lengths 3–8+ times widths, pinnately lobed, lobes 1–6, ultimate margins entire. Peduncles 3–7 cm. Outer phyllaries 5, connate 1/2–3/5 their lengths, ovate, 5–7 mm. Ray florets 8–13; corollas cream-white (sometimes purplish abaxially), laminae oblong-elliptic, 7–13 × 2.5–8 mm. Disc florets 25–50. Fruits 1.5–2.6 mm. 2n = 20, 40.
Phenology: Flowering Mar–Oct.
Habitat: Open sites, grasslands, roadcuts, arid or desert scrublands
Elevation: (200–)1000–2000(–2500) m
Distribution
Ariz., Colo., Kans., N.Mex., Okla., Tex., Mexico (Chihuahua, Coahuila, Sonora).
Discussion
Selected References
None.
Lower Taxa
None.