Penstemon hartwegii, common name Hartweg's beardtongue, is a species of flowering perennial herb in the plantain family.
Description Penstemon hartwegii can reach a height of . This bushy semi-evergreen plant has simple, narrow, fleshy, mid-green leaves and racemes of bell-shaped bright-red, purple or crimson flowers, up to 4 cm long, with white markings on a wide throat. They bloom in summer and early autumn.
It has gained the Royal Horticultural Society's Award of Garden Merit.
Taxonomy Penstemon hartwegii was scientifically described and named by George Bentham in 1840. It is part of the genus Penstemon which is classified in the Plantaginaceae family. It has no accepted varieties, but has one variety name among its four heterotypic synonyms. It had previously been described by the botanist John Lindley in 1838, but he used the name Penstemon gentianoides for the species which had been previously used for another species.
Table of Synonyms Name Year Rank Notes Penstemon gentianoides 1838 speciesnom. illeg., homonym Penstemon giganteus 1846 species Penstemon hartwegii var. hybridus 1894 variety Penstemon puniceus 1843 species
Distribution This species is native to Mexico.
References Citations
Sources Web sources