Complex sentence: The first scientific description of the Hong Kong orchid tree was published in 1908 by S. T. Dunn, superintendent of the Botanical and Forestry Department, who assigned it to the genus "Bauhinia" and named it after Sir Henry Blake.
Split into simpler sentences: The first scientific description of the Hong Kong orchid tree was published in 1908, by S. T. Dunn. He was superintendent of the Botanical and Forestry Department, and assigned the flower to the genus "Bauhinia", aptly named after Sir Henry Blake.