Ageratum mexicanum rubrum T.Moore
Ageratum mexicanum var. nanum T.Moore
Ageratum conyzoides var. mexicanum (Sims) DC.
Ageratum wendlandii M.Vilm.
Ageratum houstonianum f. niveum B.L.Rob.
Ageratum mexicanum Sims
Carelia houstoniana (Mill.) Kuntze
Cacalia mentrasto Vell.
Ageratum mexicanum album T.Moore
Ageratum mexicanum var. wendlandii Voss
Ageratum houstonianum var. muticescens B.L.Rob.
Ageratum mexicanum var. majus Voss
Ageratum houstonianum f. versicolor B.L.Rob.
Ageratum houstonianum var. typicum B.L.Rob.
Alomia pinetorum L.O.Williams
Ageratum houstonianum f. isochroum B.L.Rob.
Ageratum pinetorum (L.O.Williams) R.M.King & H.Rob.
Ageratum houstonianum f. normale B.L.Rob.
Ageratum conyzoides var. houstonianum (Mill.) T.R.Sahu
Ageratum houstonianum var. angustatum B.L.Rob.
Ageratum conyzoides subsp. houstonianum (Mill.) M.Sharma
Ageratum houstonianum f. luteum B.L.Rob.