About Picris hieracioides L.
Hawkweed oxtongue (scientific name Picris hieracioides L.) has long, narrow simple leaves that may have teeth or be toothless, and these leaves resemble an ox's tongue. Leaves at the plant's base form a rosette, and its stems can reach up to 1 metre (3.2 feet) in height. This plant blooms during summer, producing small yellow flowers with many petals that look somewhat similar to dandelion flowers. Hawkweed oxtongue is native to Europe and Asia, but it is an invasive species in Africa, Australia, and North America. It can spread seeds very quickly, outcompeting native plant species, and it also releases a chemical that inhibits the growth of nearby plants.
