Lasthenia glabrata

Species category

Flower, Weed

Common name

yellowray goldfields

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

Oblanceolate

Size

  • Length 2.6–3 mm 
  • Width 0.7–0.9 mm 
  • Thickness 0.5–0.6 mm 

Color

Black stippled surface with transparent outer cover

Texture

Outer cover with yellow tubercles

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.
attachment is yellow and enlarged.

Identification notes

PappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
is usually not present. The unit is often curved.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Asteraceae

Valid name

Lasthenia glabrata Lindl.

 Lasthenia glabrata.  Achenes with an enlarged yellow attachment.
Lasthenia glabrata. Achenes with an enlarged yellow attachment.