Polygonatum dabieshanense (Asparagaceae), a new species from the Dabieshan Mountains, Anhui and Henan provinces, China

<i>Polygonatum dabieshanense</i> (Asparagaceae), a new species from the Dabieshan Mountains, Anhui and Henan provinces, China, is described and illustrated. It is most similar to <i>P. praecox</i>, <i>P. cyrtonema</i>, and <i>P. odoratum</i> but can be distinguished by having a yellow terete rhizome, a terete stem, elliptic leaf blades, racemose inflorescences, 1-2 (occasionally 3) flowers, a cylindrical perianth extending inwardly, filaments inserted near the distal 1/2 of the perianth tube that are smooth and glabrous, a white corolla, and blue-black berries, 0.8-1.0 cm in diameter, with 2-4 seeds. The complete chloroplast genome of the sampled individuals of this new species that we sequenced ranged from 155,107-155,108 bp in length. Our phylogenetic analyses, based on chloroplast sequences, confirm that the new species is distinct from morphologically similar species.