Hemizonia

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Hemizonia
Hayfield Tarween (Hemizonia congesta).jpg
Hemizonia congesta
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Madieae
Subtribe: Madiinae
Genus: Hemizonia
DC
Species

About 25, see text

Hemizonia is a genus of plants in the family Asteraceae. They are known generally as tarweeds, although some tarweeds belong to other genera, such as Madia and Deinandra . Furthermore, Hemizonia is currently being revised; some species may be segregated into new genera.

Contents

Range

The Hemizonia tarweeds are native to southwestern North America, especially California.

Description

Hemizonia are usually sticky, aromatic, yellow-flowered annual plants which are hardy and competitive, especially in the dry Mediterranean climate of California.

Selected species

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References