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 1.2–1.6 mm
• Width 0.4–0.6 mm
• Thickness 0.4–0.5 mm 

Color

Brown with white pubescence

Texture

PubescentPubescent:
Having hairs.

Other structures

Well developed pappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
at apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.

Family

Asteraceae

Valid name

Euthamia occidentalis Nutt.

Synonyms

Euthamia californica Gandog. 
Euthamia linearifolia Gandog.
Solidago occidentalis (Nutt.) Torr. & A. Gray