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Penstemon virgatus

Species category

Flower, Weed

Common name

upright blue beardtongue

Diagnostic characters

Planting unit

True seedTrue seed:
A mature fertilized ovule consisting of an embryo, with or without and external food reserve (e.g., endosperm) enclosed by the testa.

Shape

Irregular D-shaped

Size

  • Length 1.5–2 mm 
  • Width 1–1.6 mm 
  • Thickness 0.6–0.8 mm 

Color

Brown

Texture

Rough and stippled

Other structures

Small or no ridges between flat surfaces.

Identification notes

Shape sometimes triangular.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Plantaginaceae

Valid name

Penstemon virgatus A. Gray

Penstemon virgatus. True seeds are often an irregular triangular shape.
Penstemon virgatus. True seeds are often an irregular triangular shape.