What is a leafless tree with yellow flowers and no fragrance?

Xiang Jie alias "Huang Ruixiang", "Yunnan Daphne" and "Xiang Jie Huanghua" belong to Daphne Xiang Jie. Deciduous shrub, branches are often trigeminal; Broadly ovate leaves with hairs on both sides; Flowers bloom in spring, the flowers are spherical without corolla, and there are flowers on the crown of calyx tube. It seems that the four petals are actually not petals but calyx-the flower shape is very similar to Daphne odora in Phnom Penh, except that the "fragrant" flower is golden yellow and covered with fine hairs, while the bud of Daphne odora in Phnom Penh is deep purple, and the inside is extremely pale red after opening. Similar to Daphne odora, it is a hemispherical inflorescence, very beautiful. But the biggest difference between them is that Daphne odora in Phnom Penh is evergreen all the year round, and Xiang Jie is a deciduous shrub, which "flowers first and leaves later". The Japanese name is "Sanya? Sanyou? ミツマタ "-This is because the Japanese found that the branches of incense must be" three-pronged "and are important materials for papermaking.