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Nuevas Secciones En Baccharis (Asteraceae, Astereae) de América Del Sur 1

2011; Missouri Botanical Garden; Volume: 98; Issue: 3 Linguagem: Inglês

10.3417/2009096

2162-4372

Daniel A. Giuliano, Susana E. Freire,

Biological Control of Invasive Species

Fifteen new sections of genus Baccharis L. (Asteraceae, Astereae) from South America are described, four of them belonging to subgenus Baccharis: Baccharis sect. Caespitosae Giuliano, Baccharis sect. Frenguellianae Giuliano, Baccharis sect. Spicatae Giuliano, and Baccharis sect. Tucumanenses Giuliano; five belonging to subgenus Molina (Pers.) Heering: Baccharis sect. Albidae Giuliano, Baccharis sect. Divaricatae Giuliano, Baccharis sect. Effusae Giuliano, Baccharis sect. Lilloanae Giuliano, and Baccharis sect. Megapotamicae Giuliano; one belonging to subgenus Pteronioides Heering: Baccharis sect. Australes Giuliano; one belonging to subgenus Tarchonanthoides Heering: Baccharis sect. Coridifoliae Giuliano; and four sections not assigned to any subgenus: Baccharis sect. Arenariae Giuliano, Baccharis sect. Rodriguezianae Giuliano, Baccharis sect. Tenellae Giuliano, and Baccharis sect. Thymifoliae Giuliano. Three new combinations are proposed: Baccharis sect. Heterothalamus (Less.) Giuliano, Baccharis sect. Icma (Phil.) Giuliano, and Baccharis sect. Palenia (Phil.) Giuliano. A lectotype is designated for B. arenaria Baker.