Penstemon antirrhinoides Benth. ex A.DC. species synonym

Penstemon antirrhinoides subsp. antirrhinoides subspecies synonym

Keckia cordifolia (Benth.) Straw species synonym

Keckia lemmonii (A.Gray) Straw species synonym

Keckia ternata (Torr.) Straw species synonym

Keckia antirrhinoides (Benth.) Straw species synonym

Penstemon rothrockii subsp. typicus D.D.Keck subspecies synonym

Penstemon plummerae Abrams species synonym

Penstemon lobbii Lem. species synonym

Penstemon intonsus A.Heller species synonym

Penstemon corymbosus var. puberulentus Jeps. variety synonym

Penstemon cordatus Walp. species heterotypic synonym

Penstemon carinatus Kellogg species synonym

Penstemon canosobarbatus Kellogg species synonym

Penstemon breviflorus subsp. typicus D.D.Keck subspecies synonym

Penstemon breviflorus var. carinatus (Kellogg) Schelle variety synonym

Penstemon breviflorus var. canosobarbatus Schelle variety synonym

Keckiella ternata (Torr. ex A.Gray) Straw species accepted

Keckiella corymbosa (Benth.) Straw species accepted

Penstemon corymbosus Benth. species synonym

Keckiella antirrhinoides (Benth.) Straw species accepted

Keckiella rothrockii (A.Gray) Straw species accepted

Keckiella cordifolia (Benth.) Straw species accepted

Penstemon cordifolius Benth. species synonym

Keckiella lemmonii (A.Gray) Straw species accepted

Penstemon lemmonii A.Gray species synonym

Keckiella breviflora (Lindl.) Straw species accepted

Keckia breviflora (Lindl.) Straw species synonym

Keckia rothrockii (A.Gray) Straw species synonym

Penstemon ternatus Torr. species homotypic synonym

Keckia corymbosa (Benth. ex A.DC.) Straw species synonym

Penstemon corymbosus Benth. ex A.DC. species synonym

Lepidostemon penstemonoides Lem. species synonym

Penstemon ternatus Torr. ex A.Gray species synonym

Penstemon rothrockii A.Gray species synonym

Penstemon breviflorus Lindl. species synonym

Penstemon antirrhinoides Benth. species synonym

Keckiella rothrockii subsp. rothrockii subspecies synonym

Keckiella ternata subsp. ternata subspecies synonym

Keckiella antirrhinoides subsp. antirrhinoides subspecies synonym

Penstemon ternatus subsp. typicus D.D.Keck subspecies synonym

Penstemon shockleyi S.Watson species synonym

Penstemon scabridus Eastw. species synonym