Gallery

Villarsia exaltata, emersed; photo: S.L. Winterton

Villarsia exaltata leaves, emersed; photo: S.L. Winterton

Villarsia exaltata flower: S.L. Winterton

Wolffia brasiliensis Wedd. and W. columbiana H. Karst., floating; infestation, Sacramento Valley, California; photo: S.L. Winterton

Wolffia columbiana (darker) and W. brasiliensis (lighter), floating; photo: S.L. Winterton

Wolffia brasiliensis (blue arrow), W. columbiana (white arrow), floating; photo: S.L. Winterton

Wolffia columbiana flowers (in frond pouches), floating; photo: S.L. Winterton

Wolffiella floridana; drawing © University of Florida/IFAS Center for Aquatic and Invasive Plants, used with permission

Xyris laxifolia, emersed; photo: S.L. Winterton

Xyris laxifolia inflorescence; photo: S.L. Winterton

Xyris sp.; drawing © University of Florida/IFAS Center for Aquatic and Invasive Plants, used with permission; inset photo © J.R. Manhart

Zantedeschia aethiopica, emersed, Mexico; photo: S.L. Winterton

Zantedeschia aethiopica, emersed, Mexico; photo: S.L. Winterton

Zantedeschia aethiopica spadix and spathes, Mexico; photo: S.L. Winterton

Zantedeschia aethiopica leaves; photo: S.L. Winterton

Zantedeschia aethiopica spathe; photo: S.L. Winterton

Zantedeschia aethiopica spadix and spathe; photo: S.L. Winterton

Zantedeschia aethiopica spadix; photo: S.L. Winterton

Zephyranthes candida; photo: S.L. Winterton

Zephyranthes candida flower; photo: S.L. Winterton

Zephyranthes candida flower; photo: S.L. Winterton

Zizania aquatica inflorescence; photo © Michael Wolf

Zizania palustris leaf sheath; photo © Matt Lavin

Zizania palustris inflorescence; photo © Matt Lavin

Zizania aquatica spikelets; photo © Schurdle

Zizania palustris florets; photo © Matt Lavin