Cyperus ×mesochoreus Geise
[= Cyperus ×mesochorus]
Annotated by G. C. Tucker, 2006.

Oregon: Wallowa County: Mouth of Tyron Creek, Hells Canyon, rivermile 209.4 (above confluence with Columbia River). Elev. 1100 ft.
45° 41.7' N, 116° 32.1' W
Full sun, rocky terrace above west bank of Snake River, with Opuntia, Agropyron spicatum, Plantago patagonica, Poa bulbosa, Panicum, Sporobolus cryptandrus, Grindelia, Erigeron, Physalis, Achillea, Bromus tectorum, Gylcyrrhiza, scattered Celtis. Loosely cespitose from cormose bases; scales 3.1 millimeters, turning reddish-brown; anthers 0.6 millimeters; achenes 2.1 x 1 millimeters wide; bracts ascending-spreading; large vigorous population (more than 500 clumps). Phenology: Flowers & Fruits.

Peter F. Zika 22826, Jun 29, 2006
WTU, Accession: 367319

Cyperus ×mesochoreus Geise
[= Cyperus ×mesochorus]
Annotated by C. G. Tucker, 2001.

Oregon: Wallowa County: Mouth of Tryon Creek, Hells Canyon rivermile 209.4 (above confluence with Columbia River) Elev. 1100 ft.
45° 41.7' N, 116° 32.1' W
Full sun, rocky terrace above west bank of Snake River, with Opuntia, Agropyron spicatum, Plantago patagonica, Poa bulbosa, Panicum, Sporobolus cryptandrus, Grindelia, Erigeron, Physalis, Achillea, Bromus tectorum, Gylcyrrhiza, scattered Celtis. Loosely cespitose from cormose bases; scales 3.1 mm, turning reddish-brown; anthers 0.6 mm; achenes 2.1 x 1mm wide; bracts ascending-spreading; large vigorous population (more than 500 clumps). Phenology: Flowers & Fruits.

Peter F. Zika 22826, Jun 29, 2006
IDS, Accession: 2010.008, Catalog: 2010.8.041, Barcode: IDS0024574