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

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

Introduction to Vascular Plants

© Reg Newman  Email the photographer   (Photo ID #12115)

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

SUBTAXA PRESENT IN BC
Sidalcea oregana ssp. oregana

Species Information

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



General:
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.
Leaves:
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.
Flowers:
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.
Fruits:
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

USDA Species Characteristics

Flower Colour:
Purple
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present over the Summer
Source:  The USDA

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

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Sidalcea cusickii subsp. purpurea C.L. Hitchc.

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References