Impatiens damrongii (Balsaminaceae), a new record for the flora of Vietnam

Impatiens damrongii Shimizu, previously known as a native species of southern China, northern Laos, and northern Thailand, is found first in Vietnam, in the Nam Dong Conservation Area (Thanh Hoa Province). The voucher herbarium specimens of this species collected in Vietnam are housed in the herbarium of the Vietnam National University of Forestry. A morphological description of this species, accompanied by color photographs, data on ecology and phenology in Vietnam are additionally provided.