Nomenclatural notes on the Genera Dalzellia, Lawia, Mnianthus, and Terniola (Podostemaceae)

In 1846 Gardner described Tristicha zeylanica based on material collected in Ceylon. Tulasne, however, in 1849, in his precursor to a monograph of the Podostemaceae, transferred this species to his new genus Lawia, adding, moreover, L. pulchella and L. longipes. In 1852, Tulasne, apparently having discovered that his Lawia was antedated by Lawia Wight of 1847, transferred the three species to Terniola. Wight’s Lawia later turned out to be a later synonym of the rubiaceous Adenosachme.