<i>Teucrium danxiacola</i> (Lamiaceae), a New Species from Danixa Landform of Eastern China

Abstract— Teucrium danxiacola (Lamiaceae), a new species endemic to the Danxia landform of Jiangxi Province, eastern China, is described and illustrated here. Molecular phylogenetic analyses based on five plastid markers ( matK , rbcL , rps16 , ndhF and trnL-trnF ) and nuclear ribosome ITS sequence data confirm its systematic placement within the genus Teucrium . Morphologically, the new species resembles T. viscidum and T. veronicoides , but is distinguished by the following characters: subcordate leaf base (vs. rounded to cuneate in T. viscidum ; truncate to subcordate in T. veronicoides ); a calyx covered with white spreading villous hairs (vs. glandular villous in T. viscidum ; subglabrous in T. veronicoides ) and posterior lateral lobes of the corolla bearing white spreading villous hairs (vs. subglabrous in both T. viscidum and T. veronicoides ).