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Wolffia angusta
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, and weighs only 70 μg.
Spotless watermeal · Wolffia australiana · Northern watermeal · Brazilian watermeal · Columbian watermeal · Wolffia elongata · Asian watermeal · Watermeal
Text excerpted from the Wikipedia article Wolffia angusta by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
