Carex emoryi

Looks like a Carex. Similar to Carex nebrascensis but with the apices of the pistillate scales merely acute rather than with a minute aristate tip.

Plant habit along the Rio Grande north of Taos, 10 May 2007.

An inflorescence along the Rio Grande north of Taos, 10 May 2007.

A pistillate spike along the Rio Grande north of Taos, 10 May 2007.

A staminate spike just before anthesis along the Rio Grande north of Taos, 10 May 2007.

A staminate spike at anthesis along the Rio Grande, 10 May 2007.