Schenkia sebaeoides

Schenkia sebaeoides, known as ʻĀwiwi in Hawaiian and lavaslope centaury in English, is a rare species of flowering plant. It is endemic to low shrublands in the state of Hawaiʻi in the United States. It is present on the islands of Kauai, Oahu, Lanai, Molokai, and Maui. At the time it was added to the endangered species list of the United States in 1991, it was known from seven populations for a total of fewer than 1,000 individuals. It is threatened by habitat loss. Until 2004, it was a member of genus Centaurium; it and several other species have since been transferred to other genera. This is the only plant in the gentian family, Gentianaceae, that is native to Hawaii. This is an annual herb, one of only 3% of Hawaiian flora that have annual life cycles. It often bears white flowers, but pink flowers are not uncommon. The number and size of populations fluctuates quite a bit, and there may be unknown small, ephemeral populations that exist for a season and then die away. The species......read more on Wikipedia.