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 2.8–3.2 mm
• Width 0.5–0.6 mm
• Thickness 0.4–0.5 mm

Color

Various: black to white

Texture

Fine longitudinal ribs with fine appressedAppressed:
Pressed close or lying flat against something.
hairs; scurfyScurf:
Having flakes on the surface.
between the ribs.

Other structures

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

Family

Asteraceae

Valid name

Brickellia californica (Torr. & A. Gray) A. Gray