[Sedges: The Genus Carex in the Columbia River Gorge of Oregon and Washington]

Weak-veined Sedge

Carex infirminervia

Synonyms: Carex bolanderi ssp. infirminerivia, Carex deweyana

Inflorescence of Weak-veined Sedge: Carex infirminervia (Synonyms: Carex bolanderi ssp. infirminerivia, Carex deweyana)

A close-up of the inflorescence of weak-veined sedge as seen on a moist forested bank along Old Highway 8 at Rowland Lake, just west of Catherine Creek, Columbia River Gorge.......May 20, 2011. Note the elongated spikes and nodding inflorescence. The spikes appear to all be gynecandrous and two stigmas are present. The beaks are long and slender with very shallow teeth. Because there are no close-up images of the perigynia, I'm not totally certain whether the perigynia are winged or not. Carex infirminervia has unwinged perigynia. Carex praticola is similar in appearance but has winged perigynia. Only the latter is documented (from a collection near Hood River) in the flora of the Columbia River Gorge. If anyone can give a positive identification, I would greatly appreciate it!.

Weak-veined Sedge: Carex infirminervia (Synonyms: Carex bolanderi ssp. infirminerivia, Carex deweyana) - Weak-veined Sedge: Carex infirminervia (Synonyms: Carex bolanderi ssp. infirminerivia, Carex deweyana)

Additional photos of weak-veined sedge as seen on a moist forested bank along Old Highway 8 at Rowland Lake, just west of Catherine Creek, Columbia River Gorge........May 20, 2011.

Paul Slichter E-mail