Penstemon confertus var. nanus Hook.

, Hooker's J. Bot. Kew Gard. Misc. 3: 300 (1851). BHL
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External links to taxonomic opinions:
WFO POWO
IPNI Life Sciences Identifier (LSID)
urn:lsid:ipni.org:names:187294-2
Publication
Hooker's Journal of Botany and Kew Garden Miscellany. London
Collation
3: 300
Family as entered in IPNI
Scrophulariaceae