Melampodium perfoliatum
in A. von Humboldt et al., Nov. Gen. Sp. 4(fol.): 215. 1818.
4(qto.): 474. 1820.
Introduced
Basionym: Alcina perfoliata Cavanilles Icon. 1: 11, plate 15. 1791
Treatment appears in FNA Volume 21. Treatment on page 35.
Revision as of 22:01, 27 May 2020 by imported>Volume Importer
Annuals, 20–150+ cm. Leaf blades ± deltate to rhombic-deltate, 40–200+ × 25–150+ mm, lengths 1–2(–3+) times widths, margins ± toothed or entire. Peduncles 1–10+ cm. Outer phyllaries 5, connate 0–1/6 their lengths, oblong to elliptic, (6–)12–15+ mm. Ray florets 8–13; corollas yellow-orange, laminae oblong-elliptic, 2.5–5+ × 1.6–3+ mm. Disc florets 30–45+. Fruits 4–7+ mm. 2n = 22, 24.
Phenology: Flowering year round.
Habitat: Disturbed, usually moist sites
Elevation: 10–50+ m
Distribution
Introduced; Calif., Mexico, West Indies (Antilles), Central America.
Discussion
Melampodium perfoliatum may be no longer present in California.
Selected References
None.
Lower Taxa
None.