Thirteen new species and two new combinations of Stevia (Asteraceae : Eupatorieae) from Mexico

Soejima, A. (College of Integrated Arts and Sciences, Osaka Prefecture Univ ersity, Osaka 599-8531, Japan), T Yahara (Department of Biology, Faculty of Science, Kyushu University, Fukuoka 812-0053, Japan) & K: Watanabe (Depart ment of Biology, Faculty of Science, Kobe University, Kobe 657-8501, Japan) . Thirteen new species and two new combinations of Stevia (Asteraceae: Eupa torieae) from Mexico. Brittonia 53: 377-395. 2001.-Thirteen new species of the genus Stevia are described and illustrated from Mexico: S. chilapensis, S. coahuilensis, S. crassifolia, S. ecatepecana, S. filodecaballoana, S. m ascotensis, S. mexicana, S. oaxacana, S. oligophylla, S. potosina, S. rotun difolia, S. scabrelloides, and S. viejoana. In addition, two varieties, Ste via aschenborniana Sch. Bip. ex Klotzsch var. occidentalis Grashoff and S. palmeri A. Gray var. constricta Grashoff are herein redefined as being dist inct species, S. occidentalis and S. constricta stat. nov. Stevia mexicana resembles Stevia trifida Lagasca but differs in the habit.