Page authors: Don Knoke, David Giblin
Ivesia gordonii
gordon's ivesia, alpine mousetail
Specimens
Photos

Distribution: Occurring chiefly east of the Cascades crest from central Washington south; central Washington to California, east to Montana, Wyoming, and Colorado.

Habitat: Rocky slopes, grassland, sagebrush, forest openings, and subalpine to alpines ridges.

Flowers: June-August

Origin: Native

Conservation Status: Not of concern

Description:
General:

Herbaceous, glandular-puberulent perennial from a taproot, the flowering stems 5-15 cm. tall.

Leaves:

Basal leaves numerous, the blades 2-7 cm. long, pinnate, the leaflets over 20, deeply divided into 3-5 obovate segments 3-8 mm. long; cauline leaf 1, greatly reduced, the stipule several-lobed.

Flowers:

Inflorescence a congested, terminal cluster; calyx conic, yellowish, the 5 lobes deltoid-lanceolate, 3-4 mm. long, erect; petals 5, yellow, obovate to spatulate, shorter than the sepals; stamens 5, pistils 2-4.

Fruits:

Achenes ovoid-flattened, 2 mm. long, smooth.

Accepted Name:
Ivesia gordonii (Hook.) Torr. & A. Gray
Publication: Pacif. Railr. Rep. 6(3): 72 [1858]. 1857.

Synonyms & Misapplications:
Horkelia gordonii Hook.
Ivesia alpicola Rydb. ex. Howell
Potentilla gordonii (Hook.) Greene
Infraspecies:
var. gordonii – Gordon's ivesia   Occurring east of the Cascades crest from central Washington south; Occurring east of the Cascades crest from central Washington south; central Washington to California, east to Montana, Wyoming, and Colorado.
Additional Resources:

PNW Herbaria: Specimen records of Ivesia gordonii in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Ivesia gordonii checklist entry.

E-Flora BC: Ivesia gordonii atlas page.

CalPhotos: Ivesia gordonii photos.

USDA Plants: Ivesia gordonii information.

27 photographs:
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