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Penstemon filiformis

Threadleaf beardtongue

Penstemon fruticosus var. fruticosus

Polytrichum pallidisetum

Penstemon glandulosus var. glandulosus

Penstemon grinnellii subsp. grinnellii

Penstemon grinnellii var. grinnellii

Penstemon heterophyllus subsp. heterophyllus

Penstemon idahoensis

Penstemon glaber

Sawsepal penstemon

Penstemon humilis

Low penstemon

Penstemon laetus

Gay penstemon

Ponthieva brittoniae

Citrus trifoliata

Hardy orange

Penstemon laricifolius

Pontederia rotundifolia

Penstemon laetus subsp. laetus

Penstemon laricifolius subsp. laricifolius

Penstemon linarioides subsp. linarioides

Penstemon linarioides subsp. maguirei

Penstemon cyananthus var. longiflorus