General:
Annual, biennial or sometimes perennial scentless herb from a fibrous root; stems erect, simple, branched, glabrous, 5-60 cm tall.

Leaves:
Basal leaves lacking; stems leaves alternate, 1-3 times divided into short, linear-threadlike segments, 2-8 cm long, glabrous; basal leaves deciduous by flowering time.

Flowers:
Heads with ray and disk flowers, several to numerous, mostly terminal on the upper branches; involucres 4-5 mm tall; involucral bracts subequal, mostly oblong, obtuse at the tips, with a broad, papery margin and central, dark, greenish or brownish area; ray flowers white, 10-25, 4-13 mm long; disk flowers yellow, many, about 1 mm long, 5-toothed; receptacles hemispheric, 5-8 mm tall.

Fruits:
Achenes asymmetric, 1.5-2 mm long, with 3 light-coloured, rounded, callous ribs on the inner face, the intervals brown and wrinkled; pappus a minute, toothed crown.

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:
Chamomilla inodora (L.) Gilib.
Matricaria inodora L.
Matricaria inodora var. agrestis
Matricaria maritima subsp. inodora (L.) Clapham
Matricaria maritima var. agrestis (Knaf) Wilmott
Matricaria perforata Mérat