The photo is a close-up of a hairy galinsoga plant. The green leaves are opposite with toothed edges. There is a small white flower in the center of the leaves.

Hairy galinsoga – Galinsoga quadriradiata

Galinsoga quadriradiata Cav.

Asteraceae (Aster family)

MI Status

Non-native

Life cycle

Prolific, seed-producing summer annual.

Leaves

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

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.

Reproduction

Seeds.

The photo is of a hairy galinsoga seedling.
Hairy galinsoga leaf
The photo is a close-up of a hairy galinsoga plant. The green leaves are opposite with toothed edges. There is a small white flower in the center of the leaves.
Hairy galinsoga flower

 

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Tag List
  • annual,
  • msu plant & pest diagnostics,
  • summer annual

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