New floristic finds in the Forest-Steppe part of Zhytomyr Region. Report II

Abstract

Results of floristic investigation in the territory of the Forest-Steppe zone of Zhytomyr Region (Oblast) conducted in 2022 are reported. As a result of the work, it was revealed 11 new plant species for Zhytomyr Region (Alyssum desertorum, Bothriochloa ischaemum, Bromus commutatus, Eremogone procera, Euphorbia stepposa, Festuca rupicola, Fumaria parviflora, Ranunculus rionii, Symphytum caucasicum, Taraxacum serotinum, and Verbascum chaixii subsp. orientale). Also, 11 plant species new for the Forest-Steppe zone of Zhytomyr Region were found, and new localities of 14 rather rare plant species are reported. Their locations are briefly described, and, for the majority of species, phytogeographical comments are provided. Among native species, five are regionally rare in Zhytomyr Region (Anemone sylvestris, Carex humilis, Linum perenne, Phlomoides tuberosa, and Salvia nutans). In addition, highly active plants have been revealed among new alien species, such as Symphytum caucasicum; they require further monitoring. It has been suggested that an important role in migrations of steppe plant species in the region played valley of the Rostavytsia River, a tributary of the Ros’ River, and the system of ancient valleys which forms a common hydrographic network with them.