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Dokkedal, Himmerland, Danmark
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Kolding
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Fil Sø, Vindum Skov, Jylland, Danmark
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Botanisk have Århus
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Nørre Onsild nær Hobro, Jylland, Danmark
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Cirque de Campuls Ariège Pyrénées
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Kalø Slotsruin v dæmningen mod ruinen, Danmark
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Stjärneholms borgruin, Skurup, Skåne
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Stenarmen ved Mariager, Danmark
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Sagittaria rigida. The leaf in the center is from deep water; that at the right from shallow water near the shore.
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Potamogeton americanus. 1, seed; 2, seedling 5 days old; 3, seedling 14 days old; 4, seedling of four months; A, winter buds; 5, germinating winter bud, natural size; the last two winter buds belated in development. Aquarium specimen, January 24, 1914
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Potamogeton obtusifolius, erect axes bearing winter buds. October.
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Potamogeton Robbinsii, photo-micrograph of section through old stem, showing arrangement of mechanical tissue--Detail.
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Lysichiton camtschatcense with background of Polystichum and Lomaria.
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Potamogeton heterophylius. 12, typical habit of land form; 13, terminal portion of rootstock showing tendency to become tuberous; 14, same, more advanced stage; 15, aquarium specimen
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Potamogeton amplifolius, leaves, showing characteristic mines of Hydrellia.
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Warner Parks Nature Center, Nashville, Davidson County, Tennessee, US
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Papeete, les du Vent, Polynsie Franaise
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2010.07.23 N Gnserndorf (bayou, 150 m AMSL).Leaf.German name: Gewhnlich-PfeilkrautID: Fischer & al., Exkursionsflora (2008 3rd)
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San Blas Islands, Panama
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Toro Amarillo, Alajuela, Costa Rica