What is "leucosceptrum"

Leucosceptrum is a genus of flowering plant in the Lamiaceae family, first described in 1806. It contains only one known species, Leucosceptrum canum, native to south-western China ( Sichuan, Tibet, Yunnan),the eastern Himalayas ( Nepal, Bhutan, Assam, Nagaland, Bangladesh), and northern Indochina ( Myanmar, Thailand, Laos, Vietnam).