Galium tinctorium L.
Family: Rubiaceae
southern three-lobed bedstraw, stiff bedstraw
Galium tinctorium image
Gary Fewless  
Galium tinctorium image
Emmet J. Judziewicz  
Galium tinctorium image
University of Wisconsin-Stevens Point, Robert W. Freckmann Herbarium (UWSP)  
Etymology: Galium: from Greek word gala, "milk," and alluding to the fact that certain species were used to curdle milk
Plants: erect to sprawling, perennial, 4"-16" tall forb, simple or with upper branches; stems thin, smooth except with dense short hairs at the nodes; creeping rhizomes
Leaves: whorls of 4, mostly blunt-tipped, backward curving with age, usually less than 1/10" wide
Flowers: white, 4-parted, 1/8" wide, lobes longer than wide; inflorescence a few, mostly terminal, 1/8"-1/3" tall clusters of 3 flowers; blooms June-July
Fruits: smooth
Habitat: wet; cold bogs, swamps, thickets