Two new species of Oreocharis (Gesneriaceae) from Fan Si Pan, the highest mountain in Vietnam

Abstract

Two new species of <i>Oreocharis</i> Benth. from Fan Si Pan, the highest mountain in Vietnam (Sa Pa) are described and illustrated. <i>Oreocharis grandiflora</i> W.H.Chen, Q.H.Nguyen & Y.M.Shui, is similar to <i>O. flavida</i> Merr. from Hainan province, China, but differs mainly by its larger and infundibuliform corolla, stamens adnate to the base of the corolla tube and stamens coherent in two pairs. The second, <i>Oreocharis longituba</i> W.H.Chen, Q.H.Nguyen & Y.M.Shui, is similar to <i>O. hirsuta</i> Barnett, endemic to northern Thailand, but mainly differs in its pubescence, coherent stamens and glabrous filaments.