Please try our next iteration of the Michigan Flora Online here. Beginning on February 1, 2023, michiganflora.net will point to this new site.

The new site offers several benefits over the existing website, including real coordinate mapping, giving a clearer view of the density of documentation as well as more precision about plant distributions and their link to landforms. We will also have the ability to update species pages more regularly, both in terms of new collections and as more existing Michigan specimens are georeferenced. In addition, we have a better photo display, and offer indented keys.

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Galinsoga

1. Pappus scales (of disk flowers) lacking an awn; ray flowers with pappus absent or vestigial; gland-tipped hairs of pedicels less than 0.5 mm long; teeth of leaf margin obscure, broadly rounded or little more than thickened bumps.

G. parviflora

1. Pappus scales, or many of them, with a slender terminal awn distinguishable from the cilia; ray flowers with pappus well developed; gland-tipped hairs of pedicels mostly 0.5 mm or more long; teeth of leaf margins usually definite, acute in outline.

G. quadriradiata

All species found in Galinsoga

Galinsoga parvifloraQUICKWEED 
Galinsoga quadriradiataQUICKWEED 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. February 1, 2023. https://michiganflora.net/genus.aspx?id=Galinsoga.