This section is from the book "Nature's Garden", by Neltje Blanchan. Also available from Amazon: Nature's Garden; An Aid To Knowledge Of Our Wild Flowers And Their Insect Visitors.
Flowers - Golden yellow, otherwise much resembling the lower growing white avens (page 204). Preferred Habitat - Low ground, moist meadows, swamps. Flowering Season - June - August. Distribution - Pennsylvania, Missouri, and Arizona, far northward.
After the marsh marigolds have withdrawn their brightness from low-lying meadows, blossoms of yellow avens twinkle in their stead. In autumn the jointed, barbed styles, protruding from the seed clusters, steal a ride by the same successful method of travel to new colonizing ground adopted by burdocks, goose-grass, tick-trefoils (page 23), agrimony, and a score of other "tramps of the vegetable world."