Eleocharis quadrangulata (Michx.) Roem. & Schult.
Annotated by Zika, P., 1997.

Oregon: Lane: By abandoned airport runways, ca. 0.1 miles NW of junction of Amazon canal & Danebo St.; West Eugene. Elev. 385 ft.
44.05365° N, 123.185759° W,
Datum: NAD83. Coordinate Source: OrlookId: 58200, StateProvince: Oregon, County: Lane, LocName: 17S 04W 33 NW of NW. OregonFlora 1994-2020 methodology.
Full sun; naturalized in wet prairie remnant. Mentha pulegium, Eleocharis palustris, Eleocharis acicularis, Juncus articulatus Https://oregonflora.org/collections/individual/index.php?occid=1017902. Phenology: flowering? and fruiting?.

Peter F. Zika; P.F. Zika 13225, Jul 8, 1997
With E. Alverson
OSC, Accession Number: OSC199649