[Hairgrasses: The Genus Aira in the Cascade Mountains of Oregon and Washington]

Annual Silver Hairgrass, Silver Hairgrass, Silver Hair-grass

Aira caryophyllea var. caryophyllea

Synonyms: Aira capillaris, Aira caryophyllea, Aira caryophyllea var. capillaris,Aira elegantissima, Aira elegans ssp. ambigua, Aspris caryophyllea

Inflorescence of Annual Silver Hairgrass, Silver Hairgrass, Silver Hair-grass

The inflorescence of silver hairgrass as seen along the Springwater Trail at the southeast corner of Powell Butte in west Gresham, OR..........May 23, 2011.

Annual Silver Hairgrass, Silver Hairgrass, Silver Hair-grass

The inflorescence of silver hairgrass as seen along the Springwater Trail at the southeast corner of Powell Butte in west Gresham, OR..............May 23, 2011.

Paul Slichter