Viburnum farreri Stearn - syn. Viburnum fragrans Bunge; Lonicera mongolica J.F. Gmel. - Adoxaceae
香荚蒾 xiang jia mi (chin.), Duft-Schneeball, Winterschneeball

Deciduous shrub, to 5m tall, native to China, cultivated as ornamental; bark gray-brownish; branchlets of current year green, branchlets of previous year red-brownish, later gray-brownish; leaves purplish green when young, elliptic or rhombic-obovate, papery, abaxially slightly pubescent on veins, adaxially sparsely pubescent; flowers appearing before leaves, fragrant, calyx reddish, corolla pink in bud and white when open.
http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200022446

„The hybrid Viburnum × bodnantense (V. farreri × V. grandiflorum) is particularly popular for its strongly scented pink flowers on the leafless deciduous shoots in mid- to late winter.“ https://en.wikipedia.org/wiki/Viburnum

„…this native of China produces a generous display of intensely fragrant, pink tubular flowers in roundish clusters before the end of March in good years. In milder climates, the flowers appear intermittently during the fall and winter…“
[Winter blooming shrubs. Arnold Arboretum of Harvard University., Weaver, R.E., 1972, 123]
http://arnoldia.arboretum.harvard.edu/pdf/articles/1019.pdf

Main components of the steam-distilled volatile oil of the flowers were phenylethyl alcohol (87.8%) and benzyl alcohol (3.3%). Minor constituents were e.g. benzaldehyde (0.09%), linalool (0.09%), phenylethyl acetate (0.22%), cinnamal (0.09%), and isoeugenol (0.23%).
[Constituent Analysis of Volatile Oil of Flower of Viburnum farreri W.T. Stearn., Lu Jin-Shun, Food Science, 26(8), 2005, 310-312] http://www.spkx.net.cn/EN/abstract/abstract16499.shtml

flowers cherry-like scenting, Botansicher Garten Kiel, December 2016, Author: Andreas Kraska CC BY-SA 3.0