valdivia duckweed

Lemna valdiviana is a species of duckweed in the Araceae family. It is distributed across various regions, including Portugal, Brazil, the United States, and parts of South America. The plant forms submerged or floating mats, with fronds 1–5 mm long and 0.6–3.0 mm wide. These fronds are typically 1 1/3–3 times as long as wide and often grow in groups of 4–20. The air spaces are in a single layer, and the nerve is usually prominent, running through a significant portion of the frond. The plant may flower and fruit, with a style about 0.2 mm long and a fruit measuring 1.0–1.35 mm in length. Seeds are 0.6–0.8 mm long with 15–29 ribs. The species was first described in 1864.