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  • Penstemon heterophyllus var. latifolius S.Watson

This is a synonym of Penstemon platyphyllus Rydb.

Penstemon heterophyllus var. latifolius S.Watson appears in other Kew resources:

First published in Botany [Fortieth Parallel]: 222 (1871)

Not accepted by

  • Flora of North America Editorial Committee (2019). Flora of North America North of Mexico 17: 1-737. Oxford University Press, New York, Oxford. [Cited as Penstemon platyphyllus.]

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. 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