Carex ×parentii hybr. nov. (= C. colchica × C. pseudobrizoides; Cyperaceae), new for the Netherlands since 1954

In 1954 a particular Carex was found near Amerongen (Province of Utrecht, the Netherlands). According to herbarium labels in Leiden (L), the botanists of those days thought it to be Carex curvata, new for the Netherlands, but they did not publish anything about this find. A recent search could confirm the still existing population. Further research has revealed that it is C. colchica × C. pseudobrizoides, not C. curvata. The inflorescences are clearly longer than those of C. curvata. Besides, de utricles, if developed, look more similar to the ones of C. colchica. However, the material differs from C. colchica by the many leaves; this foliage resembles that of C. curvata, C. brizoides, and C. pseudobrizoides. The Carex from Amerongen is not C. brizoides × C. colchica either, as stated by Parent in 1974. However, because Parent was the first to realise that we are dealing here with a C. colchica hybrid, we therefore provide this hybrid with the name Carex ×parentii, and a type specimen is chosen here.