Woollyleaf Bursage

Woollyleaf Bursage, Woolly Bursage

Ambrosia grayi (A. Nels.) Shinners

Asteraceae (Sunflower Family)

▲ ▼ young shoots emerging from creeping roots in spring

▲ ▼ silvery foliage on mature plants

▲ some plants do have more greenish foliage, with less silvery coloring

▲ flowering plants

▲ inflorescence

▲ ▼ male flowers (above), female bur-like flower (below)

Ambrosia grayi (A. Nels.) Shinners, Woolly Bursage: (Bayer Code: AMBGR; US Code AMGR5)

Creeping perennial with deep creeping roots; grows 6 -24 inches tall; common on fertile, moist areas of western states
Leaves pinnately lobed, gray-green to silvery in color due to many hairs; leaves larger than common ragweed leaves
Flowers are on a fat, ragweed-like inflorescence, with small hooked burlike fruit at base at maturity

(Updated January 19, 2019)