Which plant is known for its fragrant yellow flowers and is a member of the Adoxaceae?

The plant known for its fragrant yellow flowers that is a member of the Adoxaceae family is Edgeworthia chrysantha. This plant is often referred to as the paperbush due to its historical use in making paper from its bark. It is admired not only for its fragrant yellow clusters of flowers that typically bloom in late winter to early spring but also for its attractive foliage and shrub form. The delightful fragrance can be particularly noticeable in early spring, providing an uplifting scent in gardens when few other plants are in bloom.

In contrast, while Calycanthus floridus, Camellia japonica, and Camellia sasanqua are all notable plants, they do not belong to the Adoxaceae family nor are they recognized for fragrant yellow flowers specifically. Each of these plants has its own unique characteristics, such as the sweetshrub's distinct scent or the camellias' beautiful blooms, but they do not match the criteria set out in the question regarding both fragrance and flower color associated with the Adoxaceae family.