Linnaeus' wild plants are under threat in Uppsala

Many of the plant species found by Carl Linnaeus and his students around
Uppsala during the excursions Herbationes Upsalienses are extant in the
areas they visited. The authors here present the first complete list of
species registered during these excursions, with added information on
extant species in the different areas. These Linnaean populations are of
high cultural value, but they also have a high scientific value as
potential type specimens. Three of Linnaeus’ excursion areas are therefore
proposed to be included in the planned world heritage nomination "The
Rise of Systematic Biology": Hågadalen, Årike Fyris and Fäbodmossen.
The Linnaean populations are threatened by genetic pollution through the
extensive sowing and planting of the same species with alien origin in
connection with plant restauration after ground preparations and building.
The degree of genetic pollution is not known, since sowing and planting of
alien material is not registered. The authors give examples of alternative
plant restauration methods using local plant material in order to preserve
the Linnaean flora of Uppsala.