Hairy galinsoga

August 7, 2015

Galinsoga quadriradiata Cav.

Life cycle

Prolific, seed-producing summer annual.

hairy galinsoga plant
Young hairy galinsoga plant.

Leaves

Opposite, egg-shaped to triangular leaves with coarsely toothed margins, sharp tips and densely hairy upper leaf surfaces.

hairy galinsoga leaf
Hairy galinsoga leaf.

Stems

Erect with multiple, opposite branching stems. They are up to 2 feet tall and covered with coarse hairs.

Flowers and fruit

Numerous small flower heads are formed in terminal and axillary clusters. Each head has four to five white, three-toothed ray flowers and centers with numerous yellow disk flowers. The seed is enclosed in a single-seeded, brown to black, wedge-shaped, wind-disseminated fruit.

hairy galinsoga flower
Hairy galinsoga flower.

Reproduction

Seeds.

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