Penstemon cyananthus var. cyananthus

Familia: Plantaginaceae
Tribus: Cheloneae
Genus: Penstemon
Subgenus: P. subg. Habroanthus
Section: P. sect. Glabri
Species: Penstemon cyananthus
Varietas:

Penstemon cyananthus Hook. var. cyananthus autonym

• Hooker, W.J. (ed.) 1849. Curtis’s botanical magazine, comprising the plants of the Royal Gardens of Kew, and of other botanical establishments in Great Britain; with suitable descriptions. Vol. LXXV [= Vol. V of the third series.] Tt. 4417–4485, 14+8 pp. (index). Reeve, Benham, and Reeve, London. BHL Reference page. : 75: t. 4464.

• Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. 2021. The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8(215): 1–10. DOI: 10.1038/s41597-021-00997-6 Reference page. 

• Govaerts, R. et al. 2025. Penstemon cyananthus var. cyananthus in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2025 July 14. Reference page. 
• International Plant Names Index. 2025. Penstemon cyananthus var. cyananthus. Published online. Accessed: July 14 2025. Reference page.
• Tropicos.org 2025. Penstemon cyananthus var. cyananthus. Missouri Botanical Garden. Published online. Accessed: 14 July 2025. Reference page.

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