noun
buttercup witch hazel; winter hazel
A deciduous shrub native to Japan and Taiwan, producing pale yellow flowers in early spring. The scientific name is Corylopsis pauciflora.
庭にヒュウガミズキを植えた。
I planted a buttercup witch hazel in the garden.
ヒュウガミズキの花は春の訪れを感じさせる。
The flowers of the winter hazel make you feel the arrival of spring.
The name ヒュウガミズキ likely derives from 日向 (Hyūga, an old province name) and 水木 (mizuki, a type of dogwood), though the exact origin is uncertain.