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Melampodium
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Melampodium, commonly called blackfoot, is a genus of 39 flowering plants in the sunflower family (Asteraceae, tribe Heliantheae).
They are rugged plants native to the tropical to subtropical regions that include Central America, Southwestern United States, California, Florida, the Caribbean, and South America. Most of the species can be found in Mexico, five in the Southwestern United States, and three are scattered in Colombia and Brazil.
They consist of annuals and perennials or bushy plants, growing to a height of 1 m.
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Encyclopedia
Melampodium, commonly called blackfoot, is a genus of 39 flowering plants in the sunflower family (Asteraceae, tribe Heliantheae).
They are rugged plants native to the tropical to subtropical regions that include Central America, Southwestern United States, California, Florida, the Caribbean, and South America. Most of the species can be found in Mexico, five in the Southwestern United States, and three are scattered in Colombia and Brazil.
They consist of annuals and perennials or bushy plants, growing to a height of 1 m. When fully grown, they tend to fall over. They like average, well-drained soil, but can equally grow on rocky soil in deserts. They are moderately to highly drought and heat tolerant. Three species of the so-called white-rayed complex are xerophytic.
The foliage varies from bright green to grey-green. The opposite leaves are narrow and about 2-5 cm long.
The terminal flower heads are about 2.5 cm wide. They give a continuous display of white (only in the three species of the white-rayed complex), cream, or yellow daisylike ray florets, surrounding a darker orange center with the disc florets. These eight to 10 broad disc florets are functionally staminate. The five outer bracts are partially joined for about half their length.
The numerous fruits are seed-like (they consist of inner involucral bracts each enclosing and fused with individual ray achenes), with a few narrow scales at their tip. They make this genus one of the most prolific of the summer annuals, with seedlings coming up constantly.
The genus displays a large number of haploid chromosome numbers are based on 4 basic chromosome numbers ( x = 9, 10, 11, 12).
Several cultivars of Melampodium paludosum have been developed, such as Million Gold and Showstar, mostly to achieve a more compact size.
Species
* Melampodium americanum
- Melampodium appendiculatum
- Melampodium argophyllum
- Melampodium aureum
- Melampodium bibractatum
- Melampodium cinereum : Hoary Blackfoot
- Melampodium cinereum var. cinereum : Hoary Blackfoot
- Melampodium cinereum var. hirtellum : Hoary Blackfoot
- Melampodium cinereum var. ramosissimum : Hoary Blackfoot
- Melampodium costaricense
- Melampodium cupulatum
- Melampodium diffusum
- Melampodium divaricatum : Butter Daisy
- Melampodium glabrum
- Melampodium glabribracteatum
- Melampodium gracile
- Melampodium leucanthum : Plains Blackfoot
- Melampodium linearifolium
- Melampodium longicorne : Arizona Blackfoot
- Melampodium longifolium
- Melampodium longipes
- Melampodium longipilum
- Melampodium mayfieldii
- Melampodium microcephalum
- Melampodium mimulifolium
- Melampodium montanum
- Melampodium nayaritense
- Melampodium northingtonii
- Melampodium nutans
- Melampodium paludosum (name used in horticulture, it may be a syn. of M. divaricatum)
- Melampodium paniculatum
- Melampodium perfoliatum : Perfoliate Blackfoot
- Melampodium pilosum
- Melampodium pringlei
- Melampodium repens
- Melampodium rosei
- Melampodium sericeum : Rough Blackfoot
- Melampodium sinaloense
- Melampodium sinuatum
- Melampodium strigosum : Shaggy Blackfoot
- Melampodium tenellum
- Melampodium tepicense
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