Abstract
Türkiye represents one of the principal centres of diversity for the genus Stachys, exhibiting a remarkably high level of endemism, with 70 of the 126 (98 species) currently recognized taxa (55.5%) being endemic to the country. In this study, we describe and illustrate Stachys boluensis (Lamiaceae), a new species of sect. Eriostomum endemic to Bolu Province, Türkiye. Morphologically, the new species is closely related to S. thirkei but differs in having shortly adpressed-villous or densely adpressed arachnoid-tomentose flowering stems with subsessile glandular hairs, a calyx 12–17 mm long with ovate-lanceolate teeth 5–7 mm long, a white corolla, and pale-brown, broadly obovoid to subglobose nutlets with a reticulate-smooth surface. In addition, a neotype is designated here for S. thirkei to ensure nomenclatural stability.
References
- Akçiçek, E. (2010) A new subspecies of Stachys cretica (section Eriostomum, Lamiaceae) from Turkey. Turkish Journal of Botany 34: 131–136. https://doi.org/10.3906/bot-0911-225
- Akçiçek, E. & Güner, Ö. (2022) A new subspecies of Stachys cretica (Lamiaceae) from western Turkey. Phytotaxa 539 (3): 257–264. https://doi.org/10.11646/phytotaxa.539.3.4
- Akçiçek, E., Dirmenci, T. & Dündar, E. (2012) Taxonomical notes on Stachys L. Sect. Eriostomum (Hoffmanns. & Link) Dumort. (Lamiaceae) in Turkey. Turkish Journal of Botany 36: 217–234. https://doi.org/10.3906/bot-1102-19
- Ball, P.W. (1972) Stachys L. In: Tutin, T.G., Heywood, V.H., Burgess, N.A., Moore, D.M., Valentine, D.H., Walter, S.M. & Webb, D.A. (Eds.) Flora Europaea, vol. 3. Cambridge University Press, Cambridge, pp. 151–157.
- Berumen Cornejo, A.M., Lindqvist, C., Perez Molphe Balch, E.M. & Siqueiros Delgado, M.E. (2017) Phylogeny of the Stachys coccinea (Lamiaceae) complex based on molecular and morphological data. Systematic Botany 42 (3): 484–493. https://doi.org/10.1600/036364417X696113
- Bhattacharjee, R. (1980) Taxonomic studies in Stachys II: A new infrageneric classification of Stachys L. Notes from the Royal Botanic Garden 38: 65–96. https://doi.org/10.24823/nrbge.1980.3182
- Bhattacharjee, R. (1982) Stachys L. In: Davis, P.H. (Ed.) Flora of Turkey and the East Aegean Islands, vol. 7. Edinburgh University Press, Edinburgh, pp. 199–262.
- Calabrese, G., Perrino, E.V., Ladisa, G., Aly, A., Tesfmichael Solomon, M., Mazdaric, S., Benedetti, A. & Ceglie, F.G. (2015) Short-term effects of different soil management practices on biodiversity and soil quality of Mediterranean ancient olive orchards. Organic Agriculture 5: 209–223. https://doi.org/10.1007/s13165-015-0120-8
- Cheminal, A., Kokkoris, I.P., Strid, A. & Dimopoulos, P. (2020) Medicinal and aromatic Lamiaceae plants in Greece: Linking diversity and distribution patterns with ecosystem services. Forests 11 (6): 661. https://doi.org/10.3390/f11060661
- Davis, P.H., Mill, R.R. & Tan, K. (1988) Flora of Turkey and East Aegean Islands, vol. 10. Edinburgh University Press, Edinburgh, pp. 204–206.
- Dimopoulos, P., Raus, Th., Bergmeier, E., Constantinidis, T., Iatrou, G., Kokkini, S., Strid, A. & Tzanoudakis, D. (2013) Vascular plants of Greece: An annotated checklist. Botanic Garden and Botanical Museum Berlin-Dahlem, Berlin; Hellenic Botanical Society, Athens. https://doi.org/10.3372/en.31
- Dimopoulos, P., Raus, T., Bergmeier, E., Constantinidis, Th., Iatrou, G., Kokkini, S., Strid, A. & Tzanoudakis, D. (2016) Vascular plants of Greece: An annotated checklist. Willdenowia 46: 301–347. https://doi.org/10.3372/wi.46.46303
- Dirmenci, T., Yıldız, B., Akçiçek, E., Martin, E. & Dündar, E. (2011) Stachys vuralii (Lamiaceae), a new species from north Anatolia, Turkey. Annales Botanici Fennici 48: 401–408. https://doi.org/10.5735/085.048.0503
- Dumortier, B.C. (1827) Florula Belgica. Staminacia. Typis J. Casterman, Tornaci Nerviorum.
- Dündar, E., Akçiçek, E., Dirmenci, T. & Argün, Ş. (2013) Phylogenetic analysis of the genus Stachys sect. Eriostomum (Lamiaceae) in Turkey based on the nuclear ribosomal ITS sequences. Turkish Journal of Botany 37: 14–23. https://doi.org/10.3906/bot-1203-26
- Erdtman, G. (1952) Pollen morphology and Plant taxonomy I. Angiosperms. Almqvist & Wikshell, Stockholm. https://doi.org/10.1080/11035895209453507
- Falciani, L. (1997) Systematic Revision of Stachys Sect. Eriostomum (Hoffmans. & Link) Dumort. in Italy. Lagascalia 19: 187–238. [http://apps.kew.org/wcsp/ (accessed 11 November 2016)]
- Faegri, K. & Iversen, J. (1975) Textbook of pollen analysis. Hafner, New York.
- Güner, Ö. (2022) Stachys istanbulensis (Lamiaceae) a new species from Turkey: evidence from morphological, micromorphological and molecular analysis. Turkish Journal of Botany 46: 624–635. https://doi.org/10.55730/1300-008X.2737
- Güner, Ö. & Ferrer-Galego, P.P. (2021) Nomenclatural and taxonomic notes on some Stachys taxa (Lamiaceae). Turkish Journal of Botany 45: 69–82. https://doi.org/10.3906/bot-2010-12
- Güner, Ö., Özdöl, T. & Yıldırım, H. (2023) A New Rupicolous Species from West of Türkiye: Stachys cuhacioglui (Lamiaceae). Türler ve Habitatlar 4 (2): 98–109. https://doi.org/10.53803/turvehab.1339346
- IUCN, Standards and Petitions Committee. (2022) Guidelines for Using the IUCN Red List Categories and Criteria. Version 15. Prepared by the Standards and Petitions Committee. Available from: https://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 27 April 2025)
- Karaismailoğlu, M.C. & Güner, Ö. (2021) Trichome micromorphology of the genus Stachys sect. Fragilicaulis subsect. Fragilis and its taxonomic implications. Plant Biosystems 155 (4): 833–847. https://doi.org/10.1080/11263504.2020.1801874
- Karaismailoğlu, M.C. & Güner, Ö. (2019) Nutlet structures of subsection Fragiles of the genus Stachys (Lamiaceae) from Turkey and their systematic applications. Turkish Journal of Botany 43 (5): 659–672. https://doi.org/10.3906/bot-1812-31
- Karaismailoğlu, M.C., Güner, Ö. & Akçiçek, E. (2022) Characterization of the nutlet morpho-anatomical features of 12 Stachys taxa (Lamiaceae) from Turkey and its systematic practice. Phytotaxa 558 (2): 203–218. https://doi.org/10.11646/phytotaxa.558.2.4
- Martin, E., Altınordu, F., Güner, Ö. & Akçiçek, E. (2016) Karyological studies of six endemic species of Stachys (Lamiaceae) subsect. Fragiles from Turkey. Cytologia 81: 231–236. https://doi.org/10.1508/cytologia.81.231
- Martin, E., Çetin, Ö., Akçiçek, E. & Dirmenci, T. (2011) New chromosome counts of genus Stachys (Lamiaceae) from Turkey. Turkish Journal Botany 35: 671–680. https://doi.org/10.3906/bot-1009-95
- POWO. (2026) Stachys L. Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Available from: https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:325931-2 (accessed 10 June 2026)
- Punt, W., Blackmore, S., Nilsson, S. & Le Thomas, A. (1994) Glossary of pollen and spore terminology. LPP Foundation, Utrecht.
- Roy, T., Chang, T.H., Lan, T. & Lindqvist, C. (2013) Phylogeny and biogeography of New World Stachydeae (Lamiaceae) with emphasis on the origin and diversification of Hawaiian and South American taxa. Molecular Phylogenetics and Evolution 69 (1): 218–238. https://doi.org/10.1016/j.ympev.2013.05.023
- Saliaj, O., Mullaj, A. & Shehu, J. (2022) Critical revision of Lamiaceae family in Albanian flora. Biologica Nyssana 13 (1): 11–25. https://doi.org/10.5281/zenodo.7117406
- Salmaki, Y., Zarre, S. & Jamzad, Z. (2008) Nutlet micromorphology and its systematic implication in Stachys L. (Lamiaceae) in Iran. Feddes Repertorium 119: 607–621. https://doi.org/10.1002/fedr.200811187
- Satıl, F., Kaya, A., Akçiçek, E. & Dirmenci, T. (2012) Nutlet micro- micromorphology of Turkish Stachys sect. Eriostomum (Lamiaceae) and its systematic implications. Nordic Journal Botany 30: 352–364. https://doi.org/10.1111/j.1756-1051.2011.01306.x
- Scheen, A.C., Bendiksby, M., Ryding, O., Mathiesen, C., Albert, V.A. & Lindqvist, C. (2010) Molecular phylogenetics, character evolution, and suprageneric classification of Lamioideae (Lamiaceae). Annals of the Missouri Botanical Garden 97: 191–219. https://doi.org/10.3417/2007174
- Stinca, A., Chianese, G., D’Auria, G., Fascetti, S., Ravo, M., Romano, V.A., Salerno, G., Astuti, G., Bartolucci, F., Bernardo, L., Bonari, G., Bouvet, D., Cancellieri, L., Carli, E., Caruso, G., Catalano, I., Cennamo, G.D., Ciaschetti, G., Conti, F., Di Pietro, R., Fortini, P., Gangale, C., Lapenna, M.R., Lattanzi, E., Marcucci, R., Peccenini, S., Pennesi, R., Perrino, E.V., Peruzzi, L., Roma-Marzio, F., Scoppola, A., Tilia, A., Villani, M. & Rosati, L. (2019) Contribution to the floristic knowledge of eastern Irpinia and Vulture-Melfese area. Italian Botanist 8: 1–16. https://doi.org/10.3897/italianbotanist.8.37818
- Strid, A. & Tan, K. (Eds.) (1991) Mountain Flora of Greece, vol. 2. Edinburgh University Press, Edinburgh, pp. 97–107.
- Vuković, N., Boršić, I., Župan, D., Alegro, A. & Nikolić, T. (2013) Vaskularna flora Jaruna (Zagreb, Croatia). Natura Croatica: Periodicum Musei Historiae Naturalis Croatici 22 (2): 275–294.
- Wagensommer, R.P., Marrese, M., Perrino, E.V., Bartolucci, F., Cancellieri, L., Carruggio, F., Conti, F., Di Pietro, R., Fortini, P., Galasso, G., Lattanzi, E., Lavezzo, P., Longo, D., Peccenini, S., Rosati, L., Russo, G., Salerno, G., Scoppola, A., Soldano, A., Stinca, A., Tilia, A., Turco, A., Medagli, P. & Forte, L. (2014) Contributo alla conoscenza floristica della Puglia: resoconto dell’escursione del Gruppo di Floristica (S.B.I.) nel 2011 nel settore meridionale dei Monti della Daunia. Informatore Botanico Italiano 46 (2): 175–208.
- Wang, M., Zhao, Q., Jiang, D. & Wang, Z. (2020) Complete chloroplast genome sequence of Stachys japonica (Labiatae). Mitochondrial DNA Part B 5 (3): 2675–2676. https://doi.org/10.1080/23802359.2020.1787263
- Wang, R., Lan, Z., Luo, Y. & Deng, Z. (2024) The complete Chloroplast genome of Stachys geobombycis and comparative analysis with related Stachys species. Scientific Reports 14 (1): 852. https://doi.org/10.1038/s41598-024-59132-1
