Utricularia bremii (Lentibulariaceae) in Poland

Abstract

Utricularia bremii Heer ex Kölliker has been found in a former sand quarry in Dąbrowa Górnicza (Silesia-Cracow Upland, S Poland). This subatlantic species is very rarely reported from Western and Southern Europe, and extremely rarely from Central Europe. Some localities were reported from Poland, mainly in the first half of the 20th century, but none of them are considered reliable and the species is not included in the flora of Poland. In the newly discovered locality the species forms a very abundant population in shallow, nutrient-poor ditches and pools. The origin of the population is uncertain, but before sand exploitation started the area was covered by extensive fens.

Flower palate structure of the aquatic bladderworts Utricularia bremii Heer and U. minor L. from section Utricularia (Lentibulariaceae)

“…The species used in this study include Utricularia bremii Heer — collected from a shallow sand-pit Cep I in Suchdol nad Lužnicí, S Bohemia (Czech Republic), the Kuźnica Warężyńska sand-pit in Dąbrowa Górnicza (Poland) (Krajewski and Płachno, 2015 ); U. minor L.—collected from a fen bog in Nowa Wieś, Myszków (Poland). Plants with flowers were observed in natural condition in order to record flower visitors or pollinators.…”

Distributions of vascular plants in the Czech Republic

“…Utricularia bremii (Fig. 82) Utricularia bremii is a rare species distributed in central and western Europe, extending westwards to France, northwards to Denmark and Poland, southwards to northern Italy and eastwards to Ukraine and Romania (Taylor 1989, Krajewski & Płachno 2015. In the Czech Republic U. bremii occurs in shallow pools and hollows in peat bogs and mires, around calcareous springs, in forest pools formed by land subsidence after underground clay mining and in shallow pools in abandoned clay pits.…”