1. Penstemon fruticosus subsp. scouleri (Douglas ex Lindl.) Pennell & D.D.Keck

    1. This is a synonym of Penstemon fruticosus var. scouleri (Douglas ex Lindl.) Cronquist

Penstemon fruticosus subsp. scouleri (Douglas ex Lindl.) Pennell & D.D.Keck appears in other Kew resources:

First published in L.Abrams, Ill. Fl. Pacific States 3: 465 (1951)

Sources

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0