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Madia glomerata

Madia glomerata

   

Madia glomerata

Madia glomerata (Tarplant)
Asteraceae (Sunflower Family)

Foothills, montane. Openings, roadsides, disturbed areas, meadows. Summer, fall.
Lower Calico National Recreation Trail, August 13, 2019.

These tar-scented, malodorous annuals grow from 4 to 20 inches tall (12 as shown here), often in thick extensive colonies. Their glandular hairs, very evident in all the photographs on this page, exude a very strong tar odor, which is, in fact, so unpleasant that I have never wanted to get close enough for photographs.

The species is native to many western states, adventive in Colorado, as the map below indicates.

The genus was named and described by Juan Molina in 1782 from a Chilean plant, Madia sativa. Madia glomerata was first described and named by William Jackson Hooker in his Flora Boreali-Americana in 1834 from a collection made by Thomas Drummond on the plains of Saskatchewan on the Franklin Expedition of 1825-1827. "Madia" is from "Madi", the Chilean vernacular name for Madia sativa, a species also now known from the west coast of the United States.

Madia glomerata

Madia glomerata (Tarplant)
Asteraceae (Sunflower Family)

Foothills, montane. Openings, roadsides, disturbed areas, meadows. Summer, fall.
Lower Calico National Recreation Trail, August 13, 2019.

Madia glomerata

Madia glomerata (Tarplant)
Asteraceae (Sunflower Family)

Foothills, montane. Openings, roadsides, disturbed areas, meadows. Summer, fall.
Lower Calico National Recreation Trail, August 13, 2019.

Range map © John Kartesz,
Floristic Synthesis of North America

State Color Key

Species present in state and native
Species present in state and exotic
Species not present in state

County Color Key

Species present and not rare
Species present and rare
Species extirpated (historic)
Species extinct
Species noxious
Species exotic and present
Native species, but adventive in state
Eradicated
Questionable presence

Madia glomerata

Range map for Madia glomerata