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).
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.
This plant might be poisonous
How to get rid of:
Uprooting plants by pulling is another effective method to prevent the spread of herbaceous and floating weeds. This is also effective in some shrubs, annuals, and tap-rooted plants. If you're quite hesitant to do it by hand, weed wrenches can be powerful tools to use. This is especially handy (excuse the pun) when you're trying to get a hold of large saplings and shrubs that are too big to be pulled manually. However, weed wrenches are not as effective against many perennial weeds whose stems are buried deep underground and whose roots re-sprout when left behind.