[Bluegrasses: The Genus Poa in the Columbia River Gorge of Oregon and Washington]

Bulbous Bluegrass

Poa bulbosa ssp. vivipara

Bulbous Bluegrass: Poa bulbosa ssp. vivipara

A close-up of the inflorescence of bulbous bluegrass as seen at Catherine Creek in the Columbia River Gorge....................May 10, 2009. The dark bulbils or propagules can easily be seen.

Bulbils of Bulbous Bluegrass: Poa bulbosa ssp. vivipara -- Bulbils of Bulbous Bluegrass: Poa bulbosa ssp. vivipara

Close-ups of the bulbils (sprouting in this case) which give bulbous bluegrass its common name. The bulbils drop to the ground, develop roots as they sprout and begin to mature. Photographed on a rocky basalt slope along the McCord Creek Trail in the western Columbia River Gorge...................May 20, 2009.

Bulbous Bluegrass: Poa bulbosa ssp. vivipara

A close-up of one branch of the inflorescence of bulbous bluegrass as seen at Catherine Creek in the Columbia River Gorge....................May 10, 2009. The dark bulbils or propagules can easily be seen.

Bulbous Bluegrass: Poa bulbosa ssp. vivipara

Bulbous bluegrass unfortunately growing along the edge of the Eagle Creek Trail above a cliff at about the one mile mark, Columbia River Gorge National Scenic Area............April 13, 2012.

Paul Slichter