Which flowering plant variety is shown in the picture?

Magnolia liliiflora is a small tree native to southwest China (in Sichuan and Yunnan), but cultivated for centuries elsewhere in China and also Japan. It was first introduced to English-speaking countries from cultivated Japanese origins, and is thus also sometimes called Japanese magnolia, though it is not native to Japan. It is now also planted as an ornamental in North America and Europe.

It is a deciduous shrub, exceptionally a small tree (smaller than most other magnolias) and blooms profusely in early spring with large pink to purple showy flowers, before the leaf buds open.