Zinnia sp.

Species category

Flower

Common name

zinnia

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 3–3.5 mm
  • Thickness 3–3.5 mm

Color

Brown

Texture

Rough and with approximately four longitudinal ribs

Other structures

Short scaly pappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 

Identification notes

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.
surface can be striate and/or tuberculateTuberculate:
Having small pimple-like protuberances.
.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Asteraceae

Valid name

Zinnia L.

 Zinnia  sp. Achene with a short scaly pappus.
Zinnia sp. Achene with a short scaly pappus.