Abstract
Justicia Linneaus (1753: 15) is the largest genus of Acanthaceae with about 600 species, distributed mainly in the tropical and subtropical regions, extending into warm temperate zones in Europe, Asia and North America (Graham 1988). In India, the genus is represented by about 51 species and 5 varieties (Karthikeyan et al. 2009). During the systematic studies on the genus Justicia, we could observe that several names are to be typified to avoid ambiguity in the application of names. Three such names (Justicia salsoloides T. Anderson, Justicia prostrata (Roxb. ex C.B.Clarke) Gamble, and Justicia aquatica Benoist are lectotypified here according to Art. 9.2, 9.11 & 9.12 of the ICN (McNeill et al., 2012).