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Water plants: 1-3) Cuckoo pint (Arum maculatum); 4) Spiny water nymph (Najas marina, or Najas major); 5) Horned pondweed (Zannichellia palustris); 6) Opposite-leaved pondweed (Groenlandia densa, or Potamogeton densus); 7) Sago pondweed (Stuckenia pectinata, or Potamogeton pectinatus); 8) Potamogeton marinus; 9) Sweet flag (Acorus calamus); 10) Eelgrass (Zostera marina); 11) Beaked tasselweed (Ruppia maritima); 12-13) Curled pondweed (Potamogeton crispus); 14) Hairlike pondweed (Potamogeton trichoides); 15-16) Broad-leaved pondweed (Potamogeton natans). Hand-colored wood engraving, published in 1887.