[Wildrye: The Genus Elymus in the Columbia River Gorge of Oregon and Washington]

Creeping Wildrye, Quackgrass

Elymus repens

Synonyms: Agropyron caesium, Agropyron repens, Agropyron repens var. subulatum, Elytrigia repens, Elytrigia repens var. repens, Elytrigia repens var. vaillantiana, Elytrigia vaillantiana, Triticum repens, Triticum vaillantianum

Creeping Wildrye, Quackgrass: Elymus repens (Synonyms: Agropyron caesium, Agropyron repens, Agropyron repens var. subulatum, Elytrigia repens, Elytrigia repens var. repens, Elytrigia repens var. vaillantiana, Elytrigia vaillantiana, Triticum repens, Triticum vaillantianum)

An old pasture full of quackgrass observed along the Military Road at Eightmile Creek, Columbia Hills Historical State Park.....March 6, 2023. This non-native grass is densely rhizomatous and large populations can prevent many native forbs from surviving wherever it becomes established.

Bluebunch Wheatgrass, Beardless Bluebunch Wheatgrass, Beardless Wheatgrass: Pseudoroegneria spicata (Synonyms: Agropyron inerme, Agropyron spicatum , Agropyron spicatum var. inerme, Agropyron spicatum var. pubescens, Agropyron vaseyi, Elymus spicatus, Elytrigia spicata, Pseudoroegneria spicata ssp. inermis, Pseudoroegneria spicata ssp. spicata, Roegneria spicata) - Bluebunch Wheatgrass, Beardless Bluebunch Wheatgrass, Beardless Wheatgrass: Pseudoroegneria spicata (Synonyms: Agropyron inerme, Agropyron spicatum , Agropyron spicatum var. inerme, Agropyron spicatum var. pubescens, Agropyron vaseyi, Elymus spicatus, Elytrigia spicata, Pseudoroegneria spicata ssp. inermis, Pseudoroegneria spicata ssp. spicata, Roegneria spicata) - Bluebunch Wheatgrass, Beardless Bluebunch Wheatgrass, Beardless Wheatgrass: Pseudoroegneria spicata (Synonyms: Agropyron inerme, Agropyron spicatum , Agropyron spicatum var. inerme, Agropyron spicatum var. pubescens, Agropyron vaseyi, Elymus spicatus, Elytrigia spicata, Pseudoroegneria spicata ssp. inermis, Pseudoroegneria spicata ssp. spicata, Roegneria spicata) - Bluebunch Wheatgrass, Beardless Bluebunch Wheatgrass, Beardless Wheatgrass: Pseudoroegneria spicata (Synonyms: Agropyron inerme, Agropyron spicatum , Agropyron spicatum var. inerme, Agropyron spicatum var. pubescens, Agropyron vaseyi, Elymus spicatus, Elytrigia spicata, Pseudoroegneria spicata ssp. inermis, Pseudoroegneria spicata ssp. spicata, Roegneria spicata) - Bluebunch Wheatgrass, Beardless Bluebunch Wheatgrass, Beardless Wheatgrass: Pseudoroegneria spicata (Synonyms: Agropyron inerme, Agropyron spicatum , Agropyron spicatum var. inerme, Agropyron spicatum var. pubescens, Agropyron vaseyi, Elymus spicatus, Elytrigia spicata, Pseudoroegneria spicata ssp. inermis, Pseudoroegneria spicata ssp. spicata, Roegneria spicata)

Close-up views details of the inflorescence and leaf sheath of bluebunch wheatgrass as seen along forest road #3521, Wenatchee National Forest.........August 13, 2009.
Paul Slichter