Leaf indumentum in some Turkish species of Teucrium (Lamiaceae)

Abstract

Teucrium L. belong to the Lamiaceae family is a well-known, wide-distributed and also one of the largest genus with more than 260 species distributed all around the world. (Kastner 1989; Abu-Assab and Cantino 1993). Mediterranean region, the center of diversity of the genus, has about 96% of all taxa (Cantino et al. 1992; Navarro and El Oualidi 2000).Teucrium species have been divided into ten sections all over the world regarding their calyx shapes and the inflorescence structures (McClintock and Epling 1946; Tutin and Wood 1972). These are the sections: sect.

Trichomes on Vegetative and Reproductive Organs of Endemic Ballota macrodonta (Lamiaceae)

“…The long unicellular and bicellular trichomes were abundance seen on the calyx teeth of B. macrodonta, while long unicellular trichomes were adundance seen on the calyx surface (Table 1). Similar eglandular trichome types were also reported in some Türkiye species of the genus Teucrium L. [15], on the organs of B. pseudodictamnus (L.) Benth. subsp.…”

“…The unicellular stalked capitate trichomes were found on the stem and leaves of B. nigra subsp. nigra [29], the vegetative and reproductive of B. glandulosissima [12], in B. kaiseri, B. undulata, B. damascens, B. saxatilis, B. pseudodictamnus [14], in some Turkish species of Teucrium [15], the organs of B. pseudodictamnus subsp. lycia [25] and the organs of Phlomis herba-venti subsp.…”

“…These capitate trichomes were determined in some members of the genera Salvia L., Stachys L., Sideritis L., Scutellaria L., and Ballota [12,29,[33][34][35]. Moreover, bicellular stalked capitate ones were detected in B. kaiseri, B. undulata, B. damascens, B. saxatilis, and B. pseudodictamnus) [14] and on leaves and the calyx abaxial side of B. acetabulosa [27], on the leaves of some Turkish species of Teucrium [15] and on the organs of B. pseudodictamnus subsp lycia [25].…”

“…The micromorphology of their provides significant information in the separation of species and subspecies of the Lamiaceae family [10][11][12]. Also, the importance of trichomes in taxonomy was emphasized by many researchers [12][13][14][15][16]. They are widely obtained on the vegetative and generative organs of taxa of the Lamiaceae family.…”

Defining phylogenetic relationship of Nepeta x tmolea and its parents via DNA barcoding

“…According to literature, trichome types, density, presence/absence etc. are very important characters for identifying different taxa in the Lamiaceae family (Husain et al 1990; Ecevit-Genç et al 2015, 2017, 2018; Krawczyk and Głowacka 2015; Sajna and Sunojkumar 2018) and, of course, the genus Nepeta (Kolalite 1988; Dirmenci 2003; 2005; Kaya et al 2007; Açar et al 2011; Yarmoohammadi et al 2017; Özcan 2019). Additionally, it is mentioned in the studies that, although the type and density of trichomes are distinctive amongst species, they can vary in different organs of the same individual.…”