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Penstemon palmeri

Species category

Flower, Weed

Common name

Palmer's penstemon

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 ovalOval:
Broadly elliptic.
 to paisley

Size

  • Length 1.5–2 mm
  • Width 1–1.3 mm
  • Thickness 0.6–0.8 mm

Color

Black

Texture

Rough and stippled

Other structures

Edges of flat surfaces are rounded.

Identification notes

Seed shape tends to be rounded. The flat surfaces are not strong.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Plantaginaceae

Valid name

Penstemon palmeri A. Gray

Penstemon palmeri. True seeds with weak flat surfaces.
Penstemon palmeri. True seeds with weak flat surfaces.