Tony Frates:
Graham's penstemon on white shales
Tony Frates:
Graham's penstemon herbivory
Tony Frates:
Graham's penstemon juvenile in shales
Tony Frates:
Graham's penstemon habitat
Tony Frates:
Graham's penstemon habitat
Tony Frates:
Graham's penstemon habitat
Tony Frates:
Road impacts to Graham's penstemon
Tony Frates:
Road impacts to Graham's penstemon
Tony Frates:
Graham's penstemon does grow on level terrain
Tony Frates:
Graham's penstemon grazing/trampling
Tony Frates:
Graham's penstemon grazing/trampling