Impatiens halongensisImpatiens halongensis is a species in the family Balsaminaceae, native to Vietnam. It was collected in Hạ Long Bay in 1999, which is how the species got its name.DescriptionImpatiens halongensis grows as a perennial plant. Its lanceolate leaves are dark green above and measure up to long. The flowers are white, with yellow edges that are sometimes tinged with green.Distribution and habitatImpatiens halongensis is endemic to Vietnam, where it is confined to the islands of Hạ Long Bay, a UNESCO World Heritage Site. Its habitat is in limestone soil.