a-Utricularia bremii Heer ex Kölliker (white arrow) and U. australis R. Br. (red arrow) in the Kuźnica Warężyńska sand quarry in Dąbrowa Górnicza. b & c-Close-up of flowers of U. bremii from Kuźnica Warężyńska sand quarry (note almost circular flat lower lip). d-SEM micrograph of Utricularia bremii pollen grains. e-Flower of U. bremii from the Czech Republic. f-Flower of Utricularia minor L. with characteristic lateral margins of the lower lip curved downwards. Scale bars: a-5 cm; b & c-1 cm. Photo: Ł. Krajewski (a-c), B. J. Płachno (d) and L. Adamec (e & f). 

Contexts in source publication

Context 1

... bremii (Fig. 1a-d) has an almost circular lower lip of the flower (sometimes wider than long), with lateral margins that are not bent down (Fig. 1a-c & e). Utricularia minor has flowers with a lower lip longer than wide, with margins bent down (Fig. 1f). Most pollen grains produced by U. bremii are asymmetric and mal- formed (Fig. 1d), in contrast to U. ...

Context 2

... bremii (Fig. 1a-d) has an almost circular lower lip of the flower (sometimes wider than long), with lateral margins that are not bent down (Fig. 1a-c & e). Utricularia minor has flowers with a lower lip longer than wide, with margins bent down (Fig. 1f). Most pollen grains produced by U. bremii are asymmetric and mal- formed (Fig. 1d), in contrast to U. minor which produces regular grains (for details see Beretta et al. ...

Context 3

... bremii (Fig. 1a-d) has an almost circular lower lip of the flower (sometimes wider than long), with lateral margins that are not bent down (Fig. 1a-c & e). Utricularia minor has flowers with a lower lip longer than wide, with margins bent down (Fig. 1f). Most pollen grains produced by U. bremii are asymmetric and mal- formed (Fig. 1d), in contrast to U. minor which produces regular grains (for details see Beretta et al. ...

Context 4

... bremii (Fig. 1a-d) has an almost circular lower lip of the flower (sometimes wider than long), with lateral margins that are not bent down (Fig. 1a-c & e). Utricularia minor has flowers with a lower lip longer than wide, with margins bent down (Fig. 1f). Most pollen grains produced by U. bremii are asymmetric and mal- formed (Fig. 1d), in contrast to U. minor which produces regular grains (for details see Beretta et al. ...

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... 1975) and this species produces seeds (Taylor 1989). However, there are two published records of fertile, seed-producing U. bremii (Rahmann et al. 2001;Adamec 2002). The specimens collected in Poland are identical with U. bremii from the Czech Republic, and their morphology fully corresponds with descriptions of the species by Taylor (1989) (Fig. 1a). Among the scattered helophytes, U. bremii grew to 0.5 m water depth, together with Nitella syncarpa (Krajewski 2012), a rare subatlantic species endemic to ...