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Silphium radula

Family: asteraceae
Common name(s): Roughstem Rosinweed

General resources

• Wikipedia. Online encyclopedia entry (if defined).
• Google images. Web search for photographs.
• The Plant List. Taxonomical lookup
• Catalogue of Life. Taxonomical lookup
• Dave's Garden. Search the extensive PlantFiles database.

Links for Silphium radula

• Garden.org - Community-assembled plant profile (10 photos)
• Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (15 photos)
• Native Plants of Central Texas - Photos with brief comments from University of Texas at Austin. (5 photos)
• Plant Delights Nursery - Catalog page with photo, horticultural basics, and descriptive blurb. (1 photo)