Elias Landolt

Lemna turionifera is a species of flowering plant belonging to the family Araceae. The species is a floating freshwater aquatic plant, with one, two, three or four leaves each having a single root hanging in the water. Like its close relative Lemna minor, it reproduces primarily vegetatively. Unlike L. minor, however, the species is also capable of producing turions, which are starch-filled fronds that sink to the substrate and remain dormant until germinating when conditions are favorable. Its native range is Northern Europe to Japan, Northern America.

Wolffia borealis is a species of flowering plant known by the common name northern watermeal. It is native to North America including sections of Canada and the United States. It grows in mats on the surface of calm water bodies, such as ponds. It is a very tiny plant with no leaves, stems, or roots. The green part is up to 1.2 millimeters long with one rounded end and one pointed end. On the flattened top of the plant is a single stamen and pistil. Like other Wolffia, it is edible and makes a nutritious food.

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Wolffia elongata is a species of flowering plant within the family Araceae. It is native to Colombia, where it grows in the wet tropical biome.

Wolffia angusta is a species of duckweed (Lemnoideae) in the family Araceae, native to the warmer regions of Australia, New Guinea, and with a disjunct presence in Peninsular Malaysia. It has been listed by the Guinness Book of World Records as the smallest flowering plant on record, measuring 0.6 millimetres (0.02 in) long and 0.33 mm (0.01 in) wide. However, more recently Wolffia globosa has been described as the smallest, at 0.1–0.2 mm (0.004–0.008 in) in diameter. According to Guinness World Records the fruit of Wolffia angusta is the smallest of any flowering plant, only 0.25 mm long,

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