Purshia mexicana

Species category

Revegetation or Rangeland, Shrub or Tree

Common name

Mexican cliffrose

Diagnostic characters

Planting unit

AcheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat.

Shape

ObovateObovate:
Inverted egg shaped with apical end the broadest.

Size

  • Length 5–7 mm
  • Width 1.9–2.1 mm
  • Thickness 1.9–2.1 mm

Color

Dark brown

Texture

Many large longitudinal ribs

Other structures

A segment of the style remains attached to the apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
.

Identification notes

The texture on and between the ribs is rough.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Rosaceae

Valid name

Purshia mexicana (D. Don) S.L. Welsh

Synonyms

Cowania mexicana D. Don
Cowania mexicana D. Don var. dubia Brandegee

 Purshia mexicana.  Achenes with many large longitudinal ribs.
Purshia mexicana. Achenes with many large longitudinal ribs.
 Purshia mexicana.  Achenes with a segment of the style that remains attached to the apex. 
Purshia mexicana. Achenes with a segment of the style that remains attached to the apex.