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X-ray Fluorescence Spectroscopy (XRF) is a non-destructive analytical technique that has recently been developed as a tool for high throughput screening for the discovery of trace element hyperaccumulator species in herbarium collections. Herbarium XRF analysis was undertaken of representatives of the Brassicaceae family in the two herbaria in Belgrade (Serbia). This was coupled to field collection and chemical analysis of new samples of  Cardamine waldsteinii . The data revealed a potentially new zinc hyperaccumulator species,  C. waldsteinii , with 3050 mg kg −1  Zn in its leaves. This compares to 2210 mg kg −1  in the leaves of this species collected from the field. These values are below the notional hyperaccumulation threshold for zinc but are nevertheless unusual. The remarkably high accumulation factor for zinc are suggestive of the exceptional potential of  C. waldsteinii  for zinc uptake, even in non-metalliferous, zinc-deficient soils. We recommend following up this study with experimental investigations on  C. waldsteinii  to elucidate its ecophysiology and its zinc tolerance and accumulation characteristics.

Zinc (hyper)accumulation in Cardamine waldsteinii : from discovery in the herbarium to validation in the field