Systematic and Biogeographic overview of Lamiaceae in Turkey

Yıl 2017, Cilt: 4 Sayı: 4, 14 - 27, 29.12.2017

Ferhat Celep , Tuncay Dirmenci

Öz

Lamiaceae is the third largest family based on the taxon
number and fourth largest family based on the species number in Turkey.  The family has 48 genera and 782
taxa (603 species, 179 subspecies and varieties), 346 taxa (271 species, 75
subspecies and varieties) of which are endemic (ca. 44%) (data updated 1th February
2017) in the country. There are also 23 hybrid species, 19 of which are endemic
(82%). The
results proven that Turkey is one of the centers of diversity for Lamiaceae in
the Old World. In addition, Turkey has about 10% of all Lamiaceae members in
the World.

The
largest five genera in the country based on the taxon number are Stachys (118
taxa), Salvia (107 taxa), Sideritis (54
taxa), Phlomis (53 taxa) and Teucrium (49
taxa). According to taxon number, five genera with the highest endemism ratio are Dorystaechas (1 taxon, 100%), Lophantus (1 taxon, 100%), Sideritis (54 taxa, 74%), Drymosiphon (9 taxa, 67%), and Marrubium (27 taxa, 63%). There
are two monotypic genera in Turkey as Dorystaechas and Pentapleura. Turkey sits on the junction of three
phytogeographic regions with highly diverse climate and the other ecologic
features. Phytogeographic distribution of Turkish Lamiaceae taxa are 293 taxa
in the Mediterranean (37.4%), 267 taxa in the Irano-Turanian (36.7%), 90 taxa
in the Euro-Siberian (Circumboreal) phytogeographic region, and 112 taxa in
Unknown or Multiregional (14.3%) phytogeographical elements. In the
Mediterranean phytogeographic region 61% of the taxa, in the Irano-Turanian
phytogeographic region 50% of the taxa, and in the Euro-Siberian (Circumboreal)
phytogeographic region 13% of the taxa are endemic. Some endemic taxa are
widely distributed in the country, so their phytogeograhic elements are not
clearly defined, the endemism ratio of these taxa are 13%. In time, species of
Lamiaceae genera are migrated from one phytogeographic region to another one
and specialised in specific habitats in the country. Salvia, Stachys,
Sideritis, Phlomis, Teucrium, Thymus, Nepeta, Scutellaria, Origanum and Marrubium are species rich
genera in Turkey. Particulary, most of Old Wold species of Salvia, Stachys, Origanum,
Marrubium, Ballota, Lamium and Drymosiphon
naturally
grow in Turkey. These genera have also quite high endemism ratio with Phlomis, Scutellaria,
Thymus, Nepeta and Satureja. Due to high taxon
number and endemism ratio, different habitats, climates and soil types, high
altitutinal range and diverse pollinators, it is clear that Turkey is a very
good example for evolution and speciation of Lamiaceae family in the Old World.

Anahtar Kelimeler

Lamiaceae, Systematics, Biogeography

Kaynakça

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