New species of Calamus (Arecaceae; Calamoideae; Calaminae) from Sumatra

Notes on the identity of Justicia diffusa var. hedyotidifolia (Acanthaceae) with reduction of Justicia gambleana

Type designation of the Lamarck’s name Buxus balearica (Buxaceae)

Lectotypification of the monotypic genus Pseudodichanthium (Andropogoneae:  Poaceae)

Gluta laosensis (Anacardiaceae), a new species from Vientiane, Laos