General:
Aromatic annual herb from a taproot; stems erect, simple, often branched above, glandular, 0.2-1.0 m tall.

Leaves:
Basal leaves lacking; stem leaves often with clusters of smaller leaves in their axils, alternate, linear or linear-oblong, entire or slightly toothed, unstalked, glandular, 3-18 cm long, 3-12 mm wide; lower stem leaves crowded, soon deciduous.

Flowers:
Heads with ray and disk flowers, numerous in an elongate inflorescence; involucres egg-shaped or broadly urn-shaped, 6-12 mm tall; involucral bracts rounded on the back, glandular; ray flowers yellow, 8-13, 3-7 mm long; disk flowers yellow, 11-14, fertile.

Fruits:
Ray achenes flattened, 2.5-5 mm, glabrous, sometimes mottled, disk achenes sometimes 1-nerved; pappus lacking.

Source:  The Illustrated Flora of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration Source:  The Illustrated Flora of British Columbia

Synonyms and Alternate Names:
Madia capitata Nutt.
Madia sativa subsp. capitata (Nutt.) Piper
Madia sativa var. congesta Torr. & A. Gray