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1 2 -- Cicuta virosa 4 -- -- Elodea canadensis 10 17 7 Equisetum fluviatile 5 7 1 Fontinalis antipyretica 29 14 5 Glyceria fluitans 9 4 2 Glyceria maxima 2 5 -- Hippuris vulgaris 2 4 -- Hydrocharis morsus-ranae 2 1 -- Iris pseudacorus 3 6 -- Lemna gibba 1 6 -- Lemna minor 19 18 2 Lemna trisulca 9 9 2 Mentha aquatica 16 14 3 Myriophyllum spicatum 6 4 -- Nuphar lutea 26 24 4 Phalaris arundinacea 21 15 6 Phragmites australis 10 7 3 Potamogeton alpinus 11 6 1 Potamogeton berchtoldii -- 2 -- Potamogeton crispus 1 -- -- Potamogeton gramineus 1 1 1 Potamogeton lucens 3 4 -- Potamogeton natans 4 1 -- Potamogeton perfoliatus 11 8 1 Potamogeton praelongus 6 2 1 Potamogeton sp.
Grasses occurring in the meadow include Echinochloa muricata, Leersia virginica, and Phalaris arundinacea.
Phalaris arundinacea covers much of the slope and bottom of the fen, and as a result, many of the quality fen plants grow only in one or two locations and often are represented by only a few individuals.
They may still be present in the seed bank and removal of Phalaris arundinacea from the fen may allow their return.
augustifolia, Scirpus cyperinus, Schoenoplectus validus, Schoenoplectus acutus, various Carex and Juncus species, Bidens cernua, Altissima plantago-aquatica, Leersia oryzoides and Phalaris arundinacea.
All but nine of these (Alliaria petiolata, Lonicera maackii, Lysimachia nummularia, Phalaris arundinacea, Poa pratensis, Rorippa nasturtium-aquaticum, Rosa multiflora, Rumex crispus, and Urtica dioica) have failed to penetrate the interior of the forest.
Major invasive exotic species in wetlands of all types include Dipsacus sylvestris, Lysimachia nummularia, Morus alba, and Phalaris arundinacea.
atherodes meadow in Unit 1 occurs in the flat floodplain of the Big Blue River and is nearly surrounded by Phalaris arundinacea.
are overrun by Phragmites communis (giant reeds), Typha angustifolia (narrow-leaf cattail), Lythrum salicaria (purple loosestrife), and an exotic genotype of Phalaris arundinacea (reed canary grass), whereas the upland fields and oak-savannas are overrun by Robinia pseudoacacia (black locust), Rosa multiflora (multiflora rose), Ulmus pumila (Siberian elm), Lonicera japonica (Japanese honeysuckle), Rhamnus spp.