Malva parviflora
cheeseweed mallow, cheeseweed, alkali mallow, small-whorl mallow
Blooms: March-August
Habit: herb
Duration: annual
Origin: Introduced from Eurpoe
Distribution: Scattered locations in Washington; widely distributed throughout much of North America.
Habitat: Waste places, disturbed areas.
Species Description:
General: Prostrate or spreading, annual or biennial herbs, the stems 2-6 dm. long, puberulent.
Leaves: 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: 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.
Fruits: Carpels flattened and strongly cross-corrugated on the back.
Accepted Name:
Malva parviflora L.
Synonyms:
(none)
Treated in Flora of the PNW as:
Malva parviflora
Additional Resources:
PNW Herbaria Specimens: View list of
Malva parviflora specimens in the Consortium of Pacific Northwest Herbaria database.
WTU Herbarium Specimens: View list of
Malva parviflora specimens in the WTU Herbarium database.
Washington Flora Checklist:
Malva parviflora treatment.
E-Flora BC:
Malva parviflora atlas page.
CalPhotos:
Malva parviflora images.
USDA Plants Database:
Malva parviflora.
Additional photographs of Malva parviflora:
(click on a thumbnail to view larger photo)

Rod Randall

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