Crepis tectorum, the narrowleaf hawksbeard, is an annual or winter annual plant that grows to 30–100 centimetres (12–39 in) high. It is an invasive species and during maturity it has one main stem, which is branched, hairless, and leafy. The leaves are arranged in an alternate manner and are less than 0.5 inches (13 mm) wide. The Greek word krepis means sandal or slipper which resembles the shape of the seed. Narrowleaf hawksbeard originated in Siberia and was introduced to Canada around 1890.