Cynara cardunculus

Species category

Vegetable

Common name

cardoon

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 7–9 mm
  • Width 4–5 mm
  • Thickness 2.5–3 mm

Color

Gray with some yellow lines, black lines, and black spots

Texture

Smooth

Other structures

The apicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
collar is small. The basalBasal:
The base of the fruit or seed opposite the apical end.
scar is pointed and small.

Identification notes

AchenesAchene:
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.
are obovateObovate:
Inverted egg shaped with apical end the broadest.
, thick; small apicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
rim, hence rounded shoulders, with one side more rounded than the other. Base color gray with yellow or black longitudinal lines and various degrees of black mottling between the lines. Scar at base.

Noxious weed seed categories

State Noxious Weed: California

AOSA examination list

Included

Nomenclature

Family

Asteraceae

Valid name

Cynara cardunculus L.

 Cynara cardunculus.  Achenes are gray with yellow or black longitudinal lines and various degrees of black mottling between the lines.
Cynara cardunculus. Achenes are gray with yellow or black longitudinal lines and various degrees of black mottling between the lines.
 Cynara cardunculus.  Achenes are gray with some yellow lines, black lines, and black spots. 
Cynara cardunculus. Achenes are gray with some yellow lines, black lines, and black spots.