| Penstemon hartwegii | |
|---|---|
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| Flowers of Penstemon hartwegii | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Plantaginaceae |
| Genus: | Penstemon |
| Species: | P. hartwegii |
| Binomial name | |
| Penstemon hartwegii | |
Penstemon hartwegii, common name Hartweg's beardtongue, [1] is a species of flowering perennial herb in the plantain family.
Penstemon hartwegii can reach a height of 30–70 centimetres (12–28 in). 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. [2]
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. [3]
| Name | Year | Rank | Notes |
|---|---|---|---|
| Penstemon gentianoidesLindl. | 1838 | species | nom. illeg., homonym |
| Penstemon giganteusC.Morren | 1846 | species | |
| Penstemon hartwegii var. hybridusVoss | 1894 | variety | |
| Penstemon puniceusLilja | 1843 | species |
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