Watermeals are the smallest flowering plants
Wolffia arrhiza в ботанічному саду Падуї; водна культура, розмір визначається джерелами, а не неозначеним масштабом фото / Wolffia arrhiza at Padua Botanical Garden; an aquatic culture, with size established by sources rather than an uncalibrated photograph. Credit: Torque; CC BY 4.0. https://creativecommons.org/licenses/by/4.0 Source: https://commons.wikimedia.org/?curid=153722399
Watermeals, Wolffia, are among the smallest flowering plants: tiny floating relatives of duckweeds. Some species measure around a millimeter or less, smaller than a typical rice grain. This does not mean every plant commonly called duckweed has the same dimensions. Despite their simple form and inconspicuous flowering, watermeals are flowering plants, rather than algae.