The genus Cota J.Gay (Asteraceae, Anthemideae) consists of 49 species (including 63 taxa) worldwide. Cota species are mainly distributed in Europe (except north of Europe), North Africa, Caucasia, and Central Asia (Davis and Hedge, 1975; Oberprieler et al., 2007). In Turkey it is represented by 15 species and 22 taxa, of which 9 are endemic. The members of Cota are especially widespread in the Mediterranean and Irano-Turanian phytogeographic regions of Turkey (Özbek et al., 2011; Özbek, 2012). Cota was earlier classified as a section in the genus Anthemis L. in the Flora of Turkey (Grierson and Yavin, 1975). In this account, Anthemis s.l. was divided into three sections, namely sect. Anthemis (29 species), sect. Maruta (Cass.) Griseb. (6 species), and sect. Cota (J.Gay) Rupr. (15 species). After the generic and infrageneric concepts of Anthemis were changed, Anthemis sect. Cota was accepted as a genus,
Seed morphology of four Lavatera species distributed in Turkey were investigated via light microscope (LM) and scanning electron microscope (SEM) to determine their seed macro-and micromorphological characters and to assess the diagnostic value of these features. The seeds are dark brown in color and reniform with rounded apex and base reniform in shape. The dimension of seeds ranges between 1.68-2.89 mm in length and 1.51-2.4 mm in width. Also seeds are glabrous, strophiolate and hilum at basal. Two types of seed surface pattern have been observed: scalariform-ruminate and reticulate-ruminate. The seed size and seed coat ornamentation have been determined as important morphological properties for distinguishing the Lavatera species.
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