Water plants, hand-colored wood engraving, published in 1887 - stock illustration

Water plants: 1-3) Frogbit (Hydrocharis morsus-ranae); 4-5) Water soldiers (Stratiotes aloides); 6) Waterthyme (Hydrilla verticillata); 7) Canadian waterweed (Elodea canadensis); 8-11) Eel grass (Vallisneria spiralis); 12) Rannoch-rush (Scheuchzeria palustris); 13-14) Marsh arrowgrass (Triglochin palustris); 15-16) Arrowhead (Sagittaria sagittifolia); 17-18) Flowering rush (Butomus umbellatus); 19-21) Water-plantain (Alisma plantago-aquatica); 22-23) Bog arum (Calla palustris); 24-25) Spotless watermeal (Wolffia arrhiza); 26-28) Water lentil (Lemna minor); 29) Star duckweed (Lemna trisulca). Hand-colored wood engraving, published in 1887.