Penstemon isophyllus, the equal-leaved penstemon, is a species of flowering plant in the plantain family Plantaginaceae, native to Mexico.

Penstemon isophyllus
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Plantaginaceae
Genus: Penstemon
Species:
P. isophyllus
Binomial name
Penstemon isophyllus

It is a recipient of the Royal Horticultural Society's Award of Garden Merit.[1]

Growing to 70 cm (28 in), it is a woody evergreen perennial with reddish pink tubular flowers. Although hardy to −10 °C (14 °F), it benefits from some winter protection in colder areas.

The Latin specific epithet isophyllus means "with leaves all of the same size".[2]

References

edit
  1. ^ "Penstemon isophyllus". www.rhs.org. Royal Horticultural Society. Retrieved 24 January 2021.
  2. ^ Harrison, Lorraine (2012). RHS Latin for Gardeners. United Kingdom: Mitchell Beazley. ISBN 978-1845337315.