Abies fanjingshanensis

Abies fanjingshanensis, known as Fanjingshan fir, is a critically endangered evergreen conifer in the family Pinaceae, order Pinales, endemic to a single mountain, Fanjing Mountain, located in Guizhou Province of southwestern China. The species epithet fanjingshanensis directly references this sole locality, Fanjingshan, which translates as Brahma's pure land and is a UNESCO World Heritage site renowned for its exceptional biodiversity, including numerous endemic plant and animal species. Abies fanjingshanensis is one of the rarest firs in the world, with the wild population estimated at only a few hundred individuals confined to the upper slopes and ridges of Fanjing Mountain at elevations between approximately 2,000 and 2,500 metres. The tree grows to a medium size, with a narrowly pyramidal form and the characteristic flat needles of the genus Abies, dark green above with two whitish stomatal bands on the underside. The erect cylindrical seed cones disintegrate at maturity. This species exists in a highly restricted area that makes it extremely vulnerable to stochastic events, climate change, and habitat modification. It is listed as Critically Endangered by the IUCN, and conservation efforts include in-situ protection within the Fanjingshan National Nature Reserve and ex-situ propagation in botanical gardens. The discovery and description of this species highlighted the ongoing importance of botanical surveys in understudied mountain habitats in southwestern China, a region of extraordinary plant endemism.