Overview

Distribution

National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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Global Range: Central Alaska, northern Canada; NW British Columbia, Yukon.

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Physical Description

Morphology

Physical Description

Perennial, Herbs, Stems woody below, or from woody crown or caudex, Taproot present, Nodules present, Stems very short, acaulescent or subacaulescent, Stems prostrate, trailing, or mat forming, Stems less than 1 m tall, Stems solid, Stems or young twigs sparsely to densely hairy, Leaves alternate, Leaves petiolate, Stipules conspicuous, Stipules green, triangulate to lanceolate or foliaceous, Stipules persistent, Stipules free, Stipules clasping stem at the base, Stipules adnate to petiole, Leaves compound, Leaves odd pinnate, Leaf or leaflet margins entire, Leaflets opposite, Leaflets 10-many, Leaves hairy on one or both surfaces, Flowers solitary in axils, or appearing solitary, Flowers in axillary clusters or few-floweredracemes, 2-6 flowers, Inflorescences spikes or spike- like, Inflorescence terminal, Inflorescence or flowers lax, declined or pendulous, Bracts conspicuously present, Bracts hairy, Flowers zygomorphic, Calyx 5-lobed, Calyx hairy, Petals separate, Corolla papilionaceous, Petals clawed, Petals pinkish to rose, Petals blue, lavander to purple, or violet, Banner petal ovoid or obovate, Wing petals narrow, oblanceolate to oblong, Keel abruptly curved, or spirally coiled, Stamens 9-10, Stamens diadelphous, 9 united, 1 free, Filaments glabrous, Style terete, Style persistent in fruit, Fruit a legume, Fruit unilocular, Fruit humistrate, lying on the ground, Fruit freely dehiscent, Fruit oblong or ellipsoidal, Fruit coriaceous or becoming woody, Fruit exserted from calyx, Fruit beaked, Fruit glabrous or glabrate, Fruit 11-many seeded, Seeds reniform, Seed surface smooth, Seeds olive, brown, or black.
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Dr. David Bogler

Source: USDA NRCS PLANTS Database

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Ecology

Habitat

Comments: Solifluction soil.

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Population Biology

Number of Occurrences

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 81 - 300

Comments: 91 EOs; 34 in Alaska, 57 in Canada [British Columbia (27) and Yukon (30)].

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Oxytropis huddelsonii

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Specimens with Barcodes: 2
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N3 - Vulnerable

United States

Rounded National Status Rank: N2 - Imperiled

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

Reasons: Over 90 EOs in Alaska, British Columbia, and Yukon, with potential for many more. Threats to this species, like mining development, are low. Climate change may increase the amount of suitable habitat.

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Global Short Term Trend: Relatively stable (=10% change)

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Names and Taxonomy

Taxonomy

Comments: Described by Porsild (1951). Maintained as a species by Welsh (1967) who was none the less "tempted to reduce OXYTROPIS HUDDELSONII to an infraspecific category in O. NIGRESCENS." It can be difficult to distinguish these species in flower, but they can be separated by using several characters in combination, especially the glabrous fruit of O. HUDDELSONII (Welsh 1967).

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