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Cressleaf Groundsel (Senecio glabellus)

Cressleaf Groundsel (Senecio glabellus)

Description: A winter annual in the Aster/Composite family 1'-3' in height. Grows upward in clusters.

Life Cycle: Winter annual

Habitat: Wet woods, swamps, stream banks, pastures, roadsides, and fields.

Leaf: Alternate, deeply divided with wide, round-toothed lobes

Stem: Succulent, smooth and hollow, branched.

Flower: Bright yellow individual flowers in a cluster, 0.5-1" in diameter with green bracts.

Fruit: White seeds in feathery structures that are dispersed by wind.

Root: Many fiberous roots.

The problem is…..toxic to grazing livestock. This plant contains compounds called pyrrolizidine alkaloids (PA’s) which metabolize in the liver to form other toxic compounds. Consuming significant quantities of the weed is poisonous.

Cressleaf groundsel young plant

Cressleaf Groundsel

Cressleaf groundsel stem

Cressleaf groundsel flower

Seed close up

cressleaf  groundsel mature field