Henderson’s checker-mallow

Sidalcea hendersonii S. Watson


Range: Rare on southern Vancouver Island, the Gulf Islands and the adjacent lower mainland; South to Oregon.

Description:  Perennial herb from a strong taproot and short spreading rhizomes; stems erect or decumbent, hollow, purple-tinged, mostly hairless or nearly so at the base, 50-150 cm tall. Inflorescence of numerous deep pink flowers in congested, compound, spike-like, terminal clusters on stalks 1-3 mm long; petals 5, 1.5-2 cm long.

Ecology:  Wet meadows, estuaries and tidal flats in the lowland zone

Notes:  This is a blue-listed taxon in BC.


  • Eflora
  • Douglas, G.W., D.V. Meidinger, and J. Pojar (editors). 2000. Illustrated Flora of British Columbia. Volume 5: Dicotyledons (Salicaceae Through Zygophyllaceae) And Pteridophytes. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. 389 p.
  • Pojar, J. and A. MacKinnon.  1994.  Plants of coastal British Columvia: including Washington, Oregon & Alaska. Lone Pine Publishing. Vancouver. 528 p.

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Wetlandkeepers is a 2½ day introduction to wetland identification and stewardship. The course offers individuals an opportunity for hands-on practice of wetland conservation skills, such as conducting wetland, plant and bird surveys, wetland mapping and raising public awareness. It is a fun, and often muddy weekend, for all ages. Participants that successfully complete the course are awarded a Wetlandkeepers Certificate.