Penstemon secundiflorus var. secundiflorus

Familia: Plantaginaceae
Tribus: Cheloneae
Genus: Penstemon
Subgenus: P. subg. Penstemon
Section: P. sect. Coerulei
Species: Penstemon secundiflorus
Varietas:  –

Penstemon secundiflorus Benth. var. secundiflorus autonym

• Heterotypic
  • Penstemon secundiflorus var. caudatus A.Nelson in J.M.Coulter & A.Nelson, Man. Bot. Rocky Mt., ed. 2: 444 (1909)
  • Penstemon secundiflorus subsp. lavendulus Pennell in Contr. U.S. Natl. Herb. 20: 358 (1920)
  • Penstemon unilateralis Rydb. in Bull. Torrey Bot. Club 33: 150 (1906)

• Bentham, G. 1846. Ordo CXLII. Scrophulariaceae. Pp. 186–586, 589–598 in De Candolle, A. (ed.), Prodromus systematis naturalis regni vegetabilis, sive enumeratio contracta ordinum, generum, specierumque plantarum hucusque cognitarum, juxta methodi naturalis normas digesta, Pars 10, Sistens Borragineas proprie dictas et Scrophulariaceas cum indice nominum et synonymorum voluminum I–X. Sumptibus Victoris Masson, Parisiis [Paris]. BHL Biblioteca Digital Reference page. : 10:325.

• Flora of North America Editorial Committee (2019). Flora of North America North of Mexico 17: 1-737. Oxford University Press, New York, Oxford.
• Villaseñor, J.L. 2016. Checklist of the native vascular plants of Mexico. Revista Mexicana de Biodiversidad 87: 559–902. DOI: 10.1016/j.rmb.2016.06.017 Online PDF Reference page. 

• International Plant Names Index. 2025. Penstemon secundiflorus var. secundiflorus. Published online. Accessed: Jyly 19 2025. Reference page.
• Govaerts, R. et al. 2025. Penstemon secundiflorus var. secundiflorus in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2025 July 19. Reference page. 

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