Plants · La Saladita, Guerrero

greater duckweed

Spirodela polyrhiza

greater duckweed (Spirodela polyrhiza)
Photographed by vctrndr on iNaturalist

Spirodela polyrhiza (orth. var. S. polyrrhiza) is a species of duckweed known by the common names common duckmeat, greater duckweed, great duckmeat, common duckweed, and duckmeat. It can be found nearly worldwide in many types of freshwater habitat. It is a perennial aquatic plant usually growing in dense colonies, forming a mat on the water surface. Each plant is a smooth, round, flat disc 0.5 to 1.0 cm wide. It produces several minute roots. It also Most often recorded in Jan.

TaxonomyLiliopsida › Alismatales › Araceae
Local records1 research-grade observation within about 50 km of La Saladita (the survey box also takes in Zihuatanejo, Ixtapa and Troncones)
Global records10,528 on iNaturalist
Recorded here2023 – 2023
Months recorded near La Saladita
JanFebMarAprMayJunJulAugSepOctNovDec
Recent local sightings

Interactive card with more photos, sounds and similar species Plants guide iNaturalist Wikipedia

Cite as: “greater duckweed (Spirodela polyrhiza) at La Saladita”, La Saladita Field Guide, lasaladita.com/species/spirodela-polyrhiza/, updated 2026-09-26. Observation counts and months come from iNaturalist research-grade records within about 50 km of 17.8375°N, 101.7606°W (the survey box also takes in Zihuatanejo, Ixtapa and Troncones); summary text from Wikipedia where present.