field image of Carex stricta COMMON TUSSOCK SEDGE at the James Woodworth Prairie Preserve - showing the distinctive tussock, or small mound of dirt, that give this species its common name
2011-06-04 Lower Austria, district Schwechat (dirt road, 188 msm Quadrant 7865/3).German name: HartgrasWhile this one certainly is native in Eastern Austrian Pannonian climate (where it is not really rare) this might be the westernmost national (and stable) occurrence.