Wilkesia gymnoxiphium

Wilkesia gymnoxiphium (Hawaiian iliau), is a species of flowering plant in the sunflower family, Asteraceae, that is endemic to the island of Kauaʻi in Hawaiʻi. Wilkesia is one of three genera, with Argyroxiphium (silverswords and greenswords) and Dubautia (a larger group with many varied species) that are believed to be descendant from a single species related to the North American tarweed. The members of these three genera constitute what is called the silversword alliance, a group...