Flora of Nam Kading National Protected Area IX: Two new species and seven new records of angiosperms for the flora of Laos

Two new species, Greenea laotica (Rubiaceae) and Palaquium laoticum (Sapotaceae), are described based on specimens collected from the Nam Kading National Protected Area and its vicinity in central Laos. In addition, seven taxa of angiosperms are reported as new records for the flora of Laos: Lonicera macrantha (Caprifoliaceae), Heritiera angustata, Heritiera parvifolia (Malvaceae), Olax imbricata (Olacaceae), Pellacalyx yunnanensis (Rhizophoraceae), Psychotria bonii (Rubiaceae), and Pouzolzia zeylanica var. calcicola (Urticaceae). For each species, voucher specimens are cited, photographs are shown and additional information including geographical distribution, ecology and taxonomic notes are provided. Lectotype is proposed for Olax imbricata.