Sedum shunhuangense (Crassulaceae), a new species from Hunan, China

We describe and illustrate <i>Sedum shunhuangense</i>, a new species from Hunan, China. The species is morphologically similar to <i>S. alfredii</i> and <i>S. yangjifengensis</i> but differs in having subequal sepals, papillate seeds, and alternate leaves with caducous lower leaves during flowering. Phylogenetic reconstruction strongly supports two accessions of <i>S. shunhuangense</i> as monophyletic and sister to <i>S. lipingense</i> and <i>S. wilsonii</i>. The species has an estimated wild population of 200 individuals and is assessed as Endangered (EN) under IUCN criteria.