Trifolium campestre Schreb.
Trifolium procumbens L. 1755
Low Hop Clover, Hop Trefoil, Field Clover
Low hop clover is native to Eurasia, but it has become naturalized and widespread in North America.
Identification: Trifolium (“three-leaved”) is a large genus, and three common yellow hop clovers are compared below. Black medic, a relative, looks closely similar to low hop clover, so this is included too.
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|Plant||Plants 6-18" (15-45 cm) high.||Up to 16" (40 cm) tall, sometimes erect, sometimes growing along the ground|
|Leaves||petiole). Leaflets about ¾" (1.9 cm) long, ¼" (6.3 mm) wide.||petiole) than with other hop clovers, often notched at the top|
|Stem||Multiply branched, usually erect||Green or reddish green, multiply branched|
|Habitats||Grasslands, fields, roadsides, wastelands||Temperate grasslands, fields, roadsides, wastelands, cultivated fields|
Rounded, about ¼-½" (6.3-12 mm)
Three leaves, with slightly serrated tips, center leaf on separate petiole
Seedpods are “coiled”—this is probably the most unique feature of black medic
Trifolium campestre at Illinois Wildflowers
Trifolium campestre Kansas Wildflowers and Grasses
Trifolium campestre on Missouriplants.com
Trifolium campestre on Discover Life
Trifolium campestre on CalPhotos
Trifolium campestre at the University of Wisconsin's Robert W. Freckmann Herbarium
Trifolium campestre on Southeastern Flora, the Southeastern U.S. Plant Identification Resource
Trifolium campestre at the Vanderbilt University Bioimages web site
Trifolium campestre on eFloras
Newcomb, Lawrence, Morrison, Gordon (Illus.), Newcomb’s Wildflower Guide, Little, Brown and Company, 1977, p. 58
Peterson, Roger Tory, McKenny, Margaret, Peterson Field Guides: A Field Guide to Wildflowers of Northeastern and North Central North America, Houghton Mifflin, 1968, p. 150
Trifolium campestre description by Thomas H. Kent, last updated 16 Aug 2013.