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Cirsium undulatum

Family: asteraceae
Common name(s): Wavyleaf Thistle
Hardiness ratings: USDA zone 4 - 10

General resources

• Wikipedia. Online encyclopedia entry (if defined).
• Google images. Web search for photographs.
• The Plant List. Taxonomical lookup
• Catalogue of Life. Taxonomical lookup

Links for Cirsium undulatum

• Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 4-10) (14 photos)
• Denver Botanic Gardens - Description, native range, and cultural requirements. (1 photo)
• Garden.org - Community-assembled plant profile (8 photos)
• Kansas Wildflowers & Grasses - Plant portrait with botanical details and description (10 photos)
• Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (7 photos)
• Turner Photographics - Profile of wildflower of the US Pacific Northwest, with botanical description, habitat and distribution, and photo gallery.

Cirsium undulatum var. tracyi

Links

• Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (2 photos)