Abstract
The division of the speciesStachys recta into four subspecies is proposed. Besides the nominate subspecies, subsp.grandiflora (Caruel) Arcangeli, subsp.subcrenata (Vis.) Briq. and the newly combinedS. recta subsp.rhodopaea (Vel.) Chrtek jun. are described. The last subspecies differs from the others mainly by the calyx shape (infundibular here) and by the calyx teeth which are about as long as the tube. It is distributed in Macedonia and Bulgaria.
A determination key to the species of theS. recta group is provided.
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Chrtekjun, J. Taxonomical remarks on theStachys recta group. Folia geobot. phytotax. 27, 177–183 (1992). https://doi.org/10.1007/BF02856248
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DOI: https://doi.org/10.1007/BF02856248