Carex aquatilis Wahl. var. dives (Holm) Kükenth. × Carex obnupta Bailey

Washington: Lewis County: Lackamas Prairie, northwest corner of Frost Road and Jackson Highway. Elev. 311 ft.
46° 30.6' N, 122° 49' W
Rare in full sun, shallow water and clay banks of ditch in Lackamas Prairie, with parents, Carex pellita, C. pachystachya, C. leporina, Phalaris, Torreyochloa, Ludwigia palustris. Rhizomatous; spikes dangle; base fibrous, narrow & without cross-sepate like C. obnupta, infl like C. aquatilis variety dives. Phenology: Fruits.

Peter F. Zika 24471, Jun 14, 2009
WTU, Accession: 379481