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Penstemon strictus

Species category

Flower, Weed

Common name

Rocky Mountain penstemon, Rocky Mountain 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

D-shaped 

Size

  • Length 1.9–2.4 mm 
  • Width 1–1.4 mm 
  • Thickness 0.6–0.8 mm 

Color

Light brown 

Texture

Rough 

Other structures

Strong ridges present between flat surfaces.

Identification notes

Surface texture looks crusty.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Plantaginaceae

Valid name

Penstemon strictus Benth.

Synonyms

Penstemon strictus Benth. ssp. angustus Pennell

Penstemon strictus. True seeds with a surface texture that appears crusty.
Penstemon strictus. True seeds with a surface texture that appears crusty.