Galium tricornutum

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Gentianales

Familia: Rubiaceae
Subfamilia: Rubioideae
Tribus: Rubieae
Genus: Galium
Species: Galium tricornutum
Name

Galium tricornutum Dandy
References

Watsonia; Journal of the Botanical Society of the British Isles. Abroath, Scotland 4:47. 1957
USDA, ARS, Germplasm Resources Information Network. Galium tricornutum in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 07-Oct-06.

Vernacular names
English: rough corn bedstraw, roughfruit corn bedstraw, corn cleavers
suomi: Sarvimatara
polski: Przytulia trójrożna

Galium tricornutum is a species of flowering plant in the coffee family known by the common names rough corn bedstraw, roughfruit corn bedstraw, and corn cleavers. It is widespread across most of Europe plus northern Africa and southern Asia, from Norway, Portugal and Morocco to China. It is also naturalized in Australia, the Canary Islands, Mauritius, Madeira, Réunion, Brazil, Argentina, and scattered locales in North America (mostly California and Oregon).[1][2][3][4]

Galium tricornutum is an annual herb with trailing or climbing stems up to about 35 centimeters in length. It forms tangled masses or spreads thin. The stems are sometimes nearly square in cross-section. Leaves are arranged in whorls of 6 to 8 about the stem and are narrow, pointed, and bordered with prickles. Flowers appear in thin clusters of white corollas. The fruits are spherical nutlets hanging in pairs at the leaf axils. This plant is sometimes a weed of grain fields,[5][6][7] but it has been driven to the edge of extinction in the UK by drastically changed farming practices over the past 50 years.[8]
References

Kew World Checklist of Selected Plant Families
Biota of North America Program
Altervista Flora Italiana
Flora of China v 19 p 138, 麦仁珠 mai ren zhu
Dandy, James Edgar. 1957. Watsonia 4(1): 47–48
Hickman, J. C. 1993. The Jepson Manual: Higher Plants of California 1–1400. University of California Press, Berkeley.
Bacigalupo, N.M., E. L. Cabral & C.M. Taylor. 2008. Rubiaceae. 107(3): 2871–2920. In F. O. Zuloaga, O. N. Morrone & M. J. Belgrano (eds.) Catálogo de las plantas vasculares del Cono Sur, Monographs in Systematic Botany from Missouri Botanical Garden, Missouri Botanical Garden, St. Louis.
University of Oxford, Oxford Plants 400, https://herbaria.plants.ox.ac.uk/ .