Zonal subdivision and azonal substrates of Orenburg Region. Green: forest steppe; straw: northern steppe; brown: true steppe. Hatching: saline lands; white symbols: calcareous outcrops. Sources: Ogureeva (1999), corrected after Safronova et al. (2020) and Safronova (2021).

 
  Part of: Sukhorukov AP, Kushunina MA, Stepanova NYu, Kalmykova OG, Golovanov YM, Sennikov AN (2024) Taxonomic inventory and distributions of Chenopodiaceae (Amaranthaceae s.l.) in Orenburg Region, Russia. Biodiversity Data Journal 12: e121541. https://doi.org/10.3897/BDJ.12.e121541