Camellia shangshii (Theaceae), a new species endemic to danxia landscape from Guangdong Province, China

<i>Camellia shangshii</i>, a new species discovered in the danxia landscape of Danxiashan Mountain, Guangdong Province, China, is formally described and illustrated here. Morphologically, <i>C. shangshii</i> is similar to <i>C. grijsii</i> but can be distinguished by its petals connate at the base, smaller leaves, and fewer bracteoles and sepals. Phylogenetic analysis based on chloroplast genomes indicated that <i>C. shangshii</i> is a sister species to <i>C. grijsii</i>. By integrating morphological and molecular data, we validate the recognition of <i>C. shangshii</i> as a new species of <i>C.</i> sect. <i>Paracamellia</i>.