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Long-beaked arrowhead (Sagittaria longirostra). Found in swamps and along ponds, New Jersey and Pennsylvania to Alabama (After Britton & Brown)
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Needle spike-rush (Eleocharis avicularis). Found in wet soil throughout North America, except in extreme north. Also in Europe and Asia (After Britton & Brown)
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Mandioca or Cassava.
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Three stages in the growth of Pteroceras rugosum Sowb., E. Indies, showing the development of the "fingers".
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Eel Grass, at Low Tide, Covered with Periwinkles.
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Nitella polyglochin.
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Caulerpa paspaloides.
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Nelumbium luteum, a few acres growing at East Harbor, Ohio : the standing leaves are about 2 1/2 feet above water.
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Cupressus giganteaCupressus gigantea, Bayi, Nyingchi County, Tibet.Source:
Wikipedia (colour corrected from original)
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Fusola viridis; Oocystia borgei; Chordatella citriformis; Pleurococcus regularis Artari.
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Fish-Catching Bladderwort (Utricularia vulgaris).
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Chlorophycees (Algues vertes) Confervacees, Enteromorpha Linza (L.)P J. Ag..
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Various-leaved water milfoil (Myriophyllum heterophyllum). Found in ponds, Ontario and New York to Florida, Texas, and Mexico (After Britton & Brown)
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Water clover (Marsilea quadrifolia). Found along the shores of Bantam Lake, Litchfield County, Conn., whence it has been introudced into various parts of the country, notably eastern Massachusetts. Native of Europe and Asia (After Britton & Brown)
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White water crowfoot (Ranunculus aquatilis). In ponds and streams, Nova Scotia to British Columbia, south to North Carolina and Florida. Also in Europe and Asia (After Britton & Brown)
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Waterweek (Philotria canadensis). Found nearly throughout North America, except extreme north (After Britton & Brown)
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Lotus (Nelumbo lutea). Found locally in Ontario and southward to Florida, west to Michigan, Indian Territory, and Louisiana (After Britton & Brown)
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[Oligochaeta of the Subantarctic Islands of New Zealand].
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Potamogeton americanus, spray showing attachment of cases of caddis fly (fam. Leptoceridae).
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Ulva lanceolata.