Sp. Pl. 1: 204. 1753
se United States, Mexico, West Indies, Central America, South America, Eurasia, Africa.
Varieties 6 (2 in the flora).
Achyranthes aspera is a variable, pantropical species divided into six varieties (C. C. Townsend 1974), two of which occur in the flora. The variety with a long perianth and acuminate leaves has long been called </i>var.<i> aspera; the variety with a short perianth and blunt leaves, </i>var.<i> indica. However, A. Cavaco (1962) showed that the type of </i>var.<i> indica must be the type of the species A. aspera, thus </i>var.<i> indica is a homotypic synonym of </i>var.<i> aspera. Townsend made the combination A. aspera var. pubescens for plants previously called </i>var.<i> aspera.