Penstemon ambiguus var. ambiguus

Familia: Plantaginaceae
Tribus: Cheloneae
Genus: Penstemon
Subgenus: P. subg. Penstemon
Section: P. sect. Ericopsis
Subsection: P. subsect. Ambigui
Species: Penstemon ambiguus
Varietas:

Penstemon ambiguus Torr. var. ambiguus autonym

• Heterotypic
  • Penstemon ambiguus var. foliosus Benth. in A.P.de Candolle, Prodr. 10: 321 (1846)

• Torrey, J. 1827. Some account of a collection of plants made during a journey to the Rocky Mountains in the summer of 1820, by Edwin P. James, M. D. Assistant Surgeon U.S. Army. Annals of the Lyceum of Natural History of New York 2: 161–254. BHL Reference page. : 2:228.

• Flora of North America Editorial Committee (2019). Flora of North America North of Mexico 17: 1-737. Oxford University Press, New York, Oxford.

• International Plant Names Index. 2017. Penstemon ambiguus var. ambiguus. Published online. Accessed: Oct. 29 2017. Reference page.
• Govaerts, R. et al. 2017. Penstemon ambiguus var. ambiguus in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2017 Oct. 29. Reference page. 
• Tropicos.org 29200156. 29. Missouri Botanical Garden. Published online. Accessed: Oct. 2017 29200156. Reference page.
• USDA, ARS, Germplasm Resources Information Network. Penstemon ambiguus var. ambiguus in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

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