Jasminum nudiflorum

Jasminum nudiflorum, the winter jasmine, is a slender, deciduous shrub native to China (Gansu, Shaanxi, Sichuan, Xizang (Tibet), Yunnan). The flower's blossoming peaks right after winter, which is why it is also named Yingchun (迎春) in Chinese, which means "the flower that welcomes Spring". It is widely cultivated as an ornamental and is reportedly naturalized in France and in scattered locations in the United States (Texas, Oklahoma, Georgia, Tennessee, Maryland and New Jersey).