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Family: plantaginaceae
General resources
- Wikipedia. Online encyclopedia entry (if defined).
- Google images. Web search for photographs.
- GRIN. Taxonomical details, with common names, distribution, and synonyms.
- Dave's Plants. Search the extensive PlantFiles database.
Links for Penstemon attenuatus
- American Penstemon Society - Detailed description of the species' botanical characteristics, habitat, and native range.
 (1 photo)
- Rock Garden Plant Database - Encyclopedic entry with taxonomical, botanical, and horticultural details.
- Turner Photographics - Profile of wildflower of the US Pacific Northwest, with botanical description, habitat and distribution, and photo gallery.
Common name(s): Sulphur Penstemon
Links
- Wild Ginger Farm - One of the plants featured on this specialty nursery's catalog page, with photo and brief description. (2 photos)
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