<i>Rotala myanmarensis</i> sp. nov. (Lythraceae) from Myanmar and taxonomic reassessment of <i>Rotala occultiflora</i> var. <i>leichhardtii</i>

A new species of Rotala , viz. R. myanmarensis is described from Myanmar. It is characterized by 4‐merous flowers, lanceolate petals, linear‐ligulate nectary glands, and ovate seeds. Additionally, R . occultiflora var . leichhardtii is elevated to the rank of species as R. leichhardtii, based on morphological evidence, and is lectotypified. A detailed description, morphological comparative tables, and photographs are provided to aid species identification.