Within the Penstemon fruticosus article...

P cardwellii Howell

P. fruticosus var. cardwellii (Howell) Krautter
P. fruticosus subsp. cardwellii (Howell) Piper

Very closely allied to P. fruticosus, differing in the always toothed leaves obtuse or rounded at the apex, and the darker, sometimes red-purple flowers. It occurs in Oregon on the western side of the Cascade mountains and in the coastal range, and extends into S.W. Oregon. It was introduced to Kew in the 1930s by means of seeds received from Lester Rowntree of California.


A site produced by the International Dendrology Society.

For copyright and licence information, see the Licence page.

To contact the editors: info@treesandshrubsonline.org.