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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Lamiales

Familia: Plantaginaceae
Tribus: Antirrhineae
Subtribus: Antirrhininae
Genus: Pseudorontium
Species: P. cyathiferum

Pseudorontium (A. Gray) Rothm. Feddes Repert. Spec. Nov. Regni Veg. 52(1): 33. (1943)
monotypic taxon

Note: The removal of this species from Antirrhinum renders both the genus and sub-tribe monophyletic.

Antirrhinum sect. Pseudorontium A. Gray


Rothmaler, W.H.P. (1943) Feddes Repertorium Specierum Novarum Regni Vegetabilis 52(1): 33.
The Plant List 2013. Pseudorontium in The Plant List Version 1.1. Published online. Accessed: 2014 May 12. 2014. Pseudorontium. Missouri Botanical Garden. Published online. Accessed: 12 May 2014.
International Plant Names Index. 2014. Pseudorontium. Published online. Accessed: May 12 2014.

Pseudorontium is a genus of flowering plants with one species, Pseudorontium cyathiferum (syn. Antirrhinum cyathiferum), a New World snapdragon known by the common names dog's-mouth[1] and Deep Canyon snapdragon. It is native to the deserts of northern Mexico and adjacent California and Arizona. It is an annual herb producing a hairy, erect, non-climbing stem with many oval-shaped leaves. The solitary flowers are dark-veined deep purple and white, often with some yellow in the throat, and are about a centimeter long. Previously considered to belong among the New World Antirrhinum species, it is now considered the sole member of the related genus Pseudorontium.[2]

USDA, NRCS (n.d.). "Pseudorontium cyathiferum". The PLANTS Database ( Greensboro, North Carolina: National Plant Data Team. Retrieved 15 October 2015.
Oyama, Ryan K.; Baum, David A. (2004). "Phylogenetic relationships of North American Antirrhinum (Veronicaceae)". American Journal of Botany. 91 (6): 918–925. doi:10.3732/ajb.91.6.918. PMID 21653448.

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