Palynological study in five aromatic species from Argentine Northwest. II

Abstract

The pollen morphology of five aromatic species, belonging to three families, from northwestern Argentina is studied by means of optical microscopy and scanning electron microscopy. The results show that the two species of Verbenaceae, Lippia alba (Mill) N.E.Br. and Lantana tilcarensis Tronc. They have tri- and tetrazonocolporated pollen grains, elongated endo-opening and psylated-perforated exin. The two species of Lamiaceae, Minthostachys mollis Griseb. and Satureja parvifolia (Phil.) Epling show 6-zonocolpated, oblate, cross-linked exin grains. In Lycium tenuispinosum Miers var. friesii (Dammer) C.L. Hitch. (Solanaceae) the grains are trizonocolporated, with perforated, striated exin.