Characterization of the nutlet morpho-anatomical features of 12 Stachys taxa (Lamiaceae) from Turkey and its systematic practice Author Karaismailoğlu, Mehmet Cengiz 0000-0002-6856-2742 Department of Molecular Biology and Genetics, Faculty of Science, Bartın University, 74110, Bartın, Turkey biology _ 61 @ hotmail. com; https: // orcid. org / 0000 - 0002 - 6856 - 2742 biology_61@hotmail.com Author Güner, Özal Harran District Directorate of National Education, Harran, Şanlıurfa, Turkey Author Akçiçek, Ekrem Department of Science Education, Faculty of Education, Dumlupınar University, Kütahya, Turkey text Phytotaxa 2022 2022-08-15 558 2 203 218 http://dx.doi.org/10.11646/phytotaxa.558.2.4 journal article 124670 10.11646/phytotaxa.558.2.4 4f549d58-5299-4311-97d3-ec4b135b1d48 1179-3163 7002961 Key to studied Stachys taxa, based on nutlet morphological and anatomical characters 1. Nutlet color is brown, dark brown or dark brown-black ....................................................................................................................2 1. Nutlet color is taupe..........................................................................................................................................................................11 2. Nutlet color is brown ..........................................................................................................................................................................3 2. Nutlet color is dark brown or dark brown-black ................................................................................................................................9 3. Nutlet shape is ovatus, ovatus-rectangularis or ovatus-triangularis ...................................................................................................4 3. Nutlet shape is ellipticus............................................................................................................ S. megalodonta subsp. megalodonta 4. Ovatus-triangularis .............................................................................................................................................................................5 4. Ovatus, ovatus-rectangularis ..............................................................................................................................................................6 5. Nutlet surface ornamentation type is reticulate-foveate..................................................................................................... S. sivasica 5. Nutlet surface ornamentation type is verrucate ........................................................................................................... S. tundjeliensis 6. Nutlet surface ornamentation type is reticulate or reticulate-areolate................................................................................................7 6. Nutlet surface ornamentation type is verrucate or scalariform ..........................................................................................................8 7. Reticulate...................................................................................................................................................................... S. mardinensis 7. Reticulate-areolate........................................................................................................................................................... S. laetivirens 8. Scalariform ................................................................................................................................. S. megalodonta subsp. megalodonta 8. Verrucate...................................................................................................................................................................... S. baytopiorum 9. Nutlet shape is ellipticus-rectangularis............................................................................................................................... S. subnuda 9. Nutlet shape is ovatus or ovatus-rectangularis .................................................................................................................................10 10. Nutlet surface ornamentation type is alveolate ................................................................................................................. S. siirtensis 10. Nutlet surface ornamentation type is reticulate ................................................................................................ S. viscosa var. viscosa 11. Nutlet shape is ellipticus-rectangularis........................................................................................................................ S. benthamiana 11. Nutlet shape is ovatus-rectangularis........................................................................................................ S. viscosa var. odontophylla