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San Diego Natural History Museum. SDNHM. Year: 2015.   cc-by-nc-sa-3.0

Lythrum hyssopifolia (Grass Poly) is a species of annual herb in the family Lythraceae. It has a self-supporting growth form. It is associated with freshwater habitat. Grass Poly is native to Pampa, Mata Atlântica, and Rio Grande do Sul. It has simple, broad leaves. It is a photoautotroph. Individuals can grow to 0.16 m.

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EOL has data for 20 attributes, including:

Known occurrences, collected specimens and observations of Grass-poly. View this species on GBIF