Page authors: Don Knoke, David Giblin
Madia sativa
Chilean tarplant, coast tarweed

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California.

Habitat: Dry, open places at low elevations, often along roadsides or other disturbed sites.

Flowers: June-September

Origin: Native

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Bumblebees, bees, beetles, moths


Coarse, tar-scented annual, 2-12 dm. tall, with spreading, stiff hairs and stalked glands throughout.


Leaves linear or linear-oblong, 3-18 cm. long and 3-12 mm. wide, entire or lightly toothed, rather crowded, especially below.


Heads single in a narrow inflorescence or in tight clusters; involucre ovoid, 6-12 mm. high and nearly as wide, the bracts in a single series and of equal length, and enclosing the achenes of the ray flowers; rays usually 13, 3-7 mm. long, yellow; disk flowers fertile, yellow, surrounded by a row of bracts;


Achenes flattened.

Accepted Name:
Madia sativa Molina
Publication: Sag. Stor. Nat. Chili. 136. 1782.

Synonyms & Misapplications:
Madia capitata Nutt.
Madia sativa Molina ssp. capitata (Nutt.) Piper
Madia sativa Molina ssp. sativa
Madia sativa Molina var. congesta Torr. & A. Gray [HC]
Madia sativa Molina var. sativa [HC]
Additional Resources:

PNW Herbaria: Specimen records of Madia sativa in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Madia sativa checklist entry

OregonFlora: Madia sativa information

E-Flora BC: Madia sativa atlas page

CalPhotos: Madia sativa photos

48 photographs:
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