Galium trifidum

{{short description|Species of plant}}

{{Speciesbox

|name=Threepetal bedstraw

|image = Galium trifidum NRCS-1.jpg

|genus = Galium

|species = trifidum

|authority = L.

}}

Galium trifidum is a species of flowering plant in the coffee family, known by the common name three-petal bedstraw.{{cite book |editor1-last=Lee |editor1-first=Sangtae |editor2-last=Chang |editor2-first=Kae Sun |title=English Names for Korean Native Plants |year=2015 |publisher=Korea National Arboretum |location=Pocheon |isbn=978-89-97450-98-5 |page=475 |url=http://www.forest.go.kr/kna/special/download/English_Names_for_Korean_Native_Plants.pdf |accessdate=3 March 2019 |via=Korea Forest Service}} It grows widespread in the arctic, temperate and subtropical regions of the Northern Hemisphere: northern and central Asia (Siberia, the Russian Far East, China, Korea, Japan, Kazakhstan), northern and eastern Europe (Scandinavia, France, Austria, Poland, Russia, Ukraine, Baltic states) and much of North America (from Greenland and the Aleutians as far south as Oaxaca and Hispaniola).[http://apps.kew.org/wcsp/namedetail.do?name_id=87745 Kew World Checklist of Selected Plant Families][http://bonap.net/MapGallery/County/Galium%20trifidum.png Biota of North America Program, Galium trifidum]

Galium trifidum is a usually perennial herb forming tangles of thin stems up to half a meter long, ringed with whorls of several linear to oval leaves. The inflorescence is a cluster of small white or pinkish flowers, each with usually three petal-like lobes in its corolla.Cody, W. J. 1996. Flora of the Yukon Territory i–xvii, 1–669. NRC Research Press, Ottawa.Voss, E. G. 1996. Michigan Flora, Part III: Dicots (Pyrolaceae-Compositae). Cranbrook Inst. of Science, Ann Arbor.Moss, E. H. 1983. Flora of Alberta (ed. 2) i–xii, 1–687. University of Toronto Press, Toronto.