Clematis occidentalis var. grosseserrata
Columbia clematis
Specimens
Photos

Distribution: East of the Cascades in Washington; Yukon Territory to Colorado.

Habitat: Slopes and forest openings from foothills to moderate elevations in the mountains.

Origin: Native

Conservation Status: Not of concern

Description:
General:

Stems are viny, climbing, or trailing at 0.25-2.5 m long.

Leaves:

Blade margins entire or less often crenate-serrate; leaflets unlobed or occasionally 1 or 3 lobed, 2-11cm long.

Flowers:

Sepals often wide-spreading, color varies from violet-blue to pale blue, rarely creamy white, lance-ovate and 3-6 cm long; margins fluted, acuminate at tips.

Accepted Name:
Clematis occidentalis (Hornem.) DC. var. grosseserrata (Rydb.) J.S. Pringle
Publication: Brittonia. 23: 370. 1971. 1971.

Synonyms & Misapplications:
Atrogene grosseserrata Rydb., orthographic variant
Clematis columbiana (Nutt.) Torr. & A. Gray, misapplied [FNA3, HC, HC2]
Clematis columbiana (Nutt.) Torr. & A. Gray var. columbiana, misapplied [FNA3, HC, HC2]
Clematis occidentalis (Hornem.) DC. ssp. grosseserrata (Rydb.) R.L. Taylor & McBryde
Additional Resources:

PNW Herbaria: Specimen records of Clematis occidentalis var. grosseserrata in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Clematis occidentalis var. grosseserrata checklist entry.

E-Flora BC: Clematis occidentalis var. grosseserrata atlas page.

CalPhotos: Clematis occidentalis var. grosseserrata photos.

USDA Plants: Clematis occidentalis var. grosseserrata information.

24 photographs:
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