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

Oblanceolate

Size

• Length 2.6–3.7 mm
• Width 0.7–1 mm
• Thickness 0.7–1 mm

Color

Yellow longitudinal ribs; black between ribs.

Texture

Strong longitudinal ribs with a smooth background

Other structures

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.
has prominent apical pappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
crown with central style lobe.

Family

Asteraceae

Valid name

Leucanthemum × superbum (Bergmans ex J.W. Ingram) Bergmans ex Kent.

Synonyms

Chrysanthemum × superbum Bergmans ex J.W. Ingram