Common name(s): Long-bristled Smartweed
- Wikipedia. Online encyclopedia entry (if defined).
- Google images. Web search for photographs.
- GRIN. Taxonomical details, with common names, distribution, and synonyms.
- The Plant List. Taxonomical lookup
Links for Polygonum caespitosum
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments.
- Missouri Plants - Description and photographs of botanical features, with notes about habitat and native status. (4 photos)