Page authors: Don Knoke, David Giblin
Malva parviflora
cheeseweed, alkali mallow, small-whorl mallow

Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California, east to the Great Plains, also in southeastern and northeastern North America.

Habitat: Roadsides, forest edge, fields, ditches, wastelots, and other disturbed open areas.

Flowers: March-August

Origin: Introduced from Eurpoe

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Bees


Prostrate or spreading, annual or biennial herbs, the stems 2-6 dm. long, puberulent.


Leaves palmately veined, with petioles up to twice as long as the blades; leaf blades cordate-reniform, 2-5 cm. long and slightly broader, shallowly 5-7 lobed, with fine teeth.


Flowers in small clusters in the leaf axils, on long pedicels to sessile, white to pale lavender; calyx shallowly 5-lobed, about equaling the corolla; petals 5, clawed; filaments fused into a tube, the stamens freed from the tube single or in pairs; style branches stigmatic most of their length, not capitate; ovary superior, the carpels in a ring around a central axis.


Carpels flattened and strongly cross-corrugated on the back.

Accepted Name:
Malva parviflora L.
Publication: Demonstr. Pl. 18. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Malva parviflora in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Malva parviflora checklist entry.

OregonFlora: Malva parviflora information.

E-Flora BC: Malva parviflora atlas page.

CalPhotos: Malva parviflora photos.

USDA Plants: Malva parviflora information.

18 photographs:
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