János Heuffel

Festuca rupicola, the furrowed fescue, is a species of cool-season grass in the family Poaceae. It is native to the warm-temperate Old World; from the Atlas Mountains of Africa, as well as France and much of central and eastern Europe through to Central Asia and on to Manchuria, and as far south as Saudi Arabia and Iran. A tussock-former, it is considered a typical dominant species of ancient species-rich grasslands.

Iris reichenbachii is a perennial bearded iris species native to Bulgaria, Montenegro, Serbia, North Macedonia, and into northeast Greece. Flowers are dull purple, yellow, or violet, with each stem giving one or two flowers. It is sometimes commonly known as the 'Rock iris' in Romania.

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Knautia drymeia, commonly known as the Hungarian widow flower, is a herbaceous perennial plant species in the family Caprifoliaceae, that grows in Central and Southeastern Europe.

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