Galium is a large genus of Annual plant and perennial plant plants in the family Rubiaceae, occurring in the temperate zones of both the Northern and Southern Hemispheres. Some species are informally known as bedstraw. Galium. USDA PLANTS.
Over 600 species of Galium are described, Galium. Flora of China. with estimates of 629 to 650 Galium. The Jepson eFlora 2013. as of 2013. The field madder, Sherardia arvensis, is a close relative and may be confused with a tiny bedstraw. Asperula is also a closely related genus; some species of Galium (such as woodruff, Galium odoratum) are occasionally placed therein.
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