Rob's Plant Links
. Online encyclopedia entry (if defined).
. Web search for photographs.
. Taxonomical details, with common names, distribution, and synonyms.
The Plant List
. Taxonomical lookup
. Search the extensive PlantFiles database.
Links for Penstemon ellipticus
All Things Plants
- Community-assembled plant profile
American Penstemon Society
- Detailed description of the species' botanical characteristics, habitat, and native range.
Lady Bird Johnson Wildflower Center
- Plant description and characteristics with notes on distribution, culture, and propagation.
NARGS Image Gallery
- Photograph(s) contributed by North American Rock Garden Society members.
Ontario Rock Garden Society
- Germination information
Virginia Tech Dendrology
- Factsheet with botanical characteristics and photos of various features.
22 Feb 2015