Abstract: | The leafless species Hoya aphylla Aver. N.S. Khang & Averyanova (Apocynaceae) is described and illustrated as a new species for science from Hin Nam No National Protected Area of Laos (central Laos, Khammoune province). In its floral morphology, this new species may be similar to H. lyi, H. carnosa and H. multiflora, but it differs in corona color and shape of corona segments. Like the first two mentioned species, the new species may be referred to the type section of the genus, but in terms of it its leafless habit it exhibits an isolated position. |