Without getting into taxonomic arguments, Michelia champaca or Magnolia x alba (M. champaca x M. montana) is an evergreen tree that produces fragrant flowers, named Bai Lan in China. The plant is used to provide essential oils for the perfume industry and as a cut-flower. In China and other parts of Asia, the tight, already white flower buds are harvested as part of the local tradition, women placing the buds in their garments and pockets, where the buds continue to open emitting a strong very pleasant fragrance. The image, taken on a nursery in Zheijiang province shows the product being commercialized at a local market.
Interested growers will probably have to start by purchasing seed; see Giardinaggio.it for more information.