E-Flora BC: Electronic Atlas of the Flora of British Columbia

Sidalcea oregana (Nutt. ex Torr. & A. Gray) A. Gray subsp. oregana
Oregon checker-mallow
Malvaceae (Mallow family)

Introduction to Vascular Plants

© Reg Newman  Email the photographer   (Photo ID #12116)

E-Flora BC Static Map
Distribution of Sidalcea oregana subsp. oregana
Click here to view our interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Species Information

Click on the image below to view an expanded illustration for this species.

Perennial herb from a stout taproot and a branched crown, without rhizomes; stems erect, not hollow, glabrous to soft-hairy or with star-like hairs, 20-150 cm tall.
Basal leaves heart-shaped, long-stalked, shallowly lobed, toothed; stem leaves alternate, palmately 5-7 lobed into oblong segments, stalks reduced upwards; stipules purple-tinged.
Inflorescence of numerous flowers in open, loose, terminal clusters on stalks 1-10 mm long; petals 5, light pink to deep pink, 1-2 cm long; calyces 3.5-9 mm long, hairy to bristly-hairy or with long hairs up to 2.5 mm long, bractlets lacking.
Carpels, 2.5-3 mm long, 5-10, honeycombed on the sides and back, the beaks 0.3-0.7 mm long; seeds 1.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry grasslands, shrublands and forest openings in the steppe and lower montane zones; rare in SC BC; S to WY, UT and CA.

Source: The Illustrated Flora of British Columbia

Synonyms and Alternate Names

Sidalcea oregana var. procera

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References