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Blackfoot daisy, plains Blackfoot

Habit 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.

Ray florets

8–13;

corollas cream-white (sometimes purplish abaxially), laminae oblong-elliptic, 7–13 × 2.5–8 mm.

Disc florets

25–50.

Outer phyllaries

5, connate 1/2–3/5 their lengths, ovate, 5–7 mm.

Fruits

1.5–2.6 mm.

2n

= 20, 40.

Melampodium leucanthum

Phenology Flowering Mar–Oct.
Habitat Open sites, grasslands, roadcuts, arid or desert scrublands
Elevation (200–)1000–2000(–2500) m ((700–)3300–6600(–8200) ft)
Distribution
from FNA
AZ; CO; KS; NM; OK; TX; Mexico (Chihuahua, Coahuila, Sonora)
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 21, p. 35.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Melampodiinae > Melampodium
Sibling taxa
M. appendiculatum, M. cinereum, M. divaricatum, M. longicorne, M. perfoliatum, M. strigosum
Name authority Torrey & A. Gray: Fl. N. Amer. 2: 271. (1842)
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