Do both Tithonia and Pachysandra belong to the taxonomic category of genus?
Pachysandra Pachysandra is a genus of five species of evergreen perennials or subshrubs, belonging to the boxwood family Buxaceae. The species are native to eastern Asia and southeast North America, some reaching a height of 20 - , with only weakly woody stems. The leaves are alternate, leathery, with an entirely too coarsely toothed margin, and are typically 5 - long. The small uni-sexual blooms are greenish-white and produced in late spring or early summer.
Pachystylidium Pachystylidium is a genus of plant of the family Euphorbiaceae. It contains only one known species, Pachystylidium hirsutum, found in eastern India, Indochina, the Philippines, Sulawesi, the Lesser Sunda Islands, and Java.