Avon Milkvetch

Astragalus praelongus var. avonensis

NatureServe conservation status

Global (G-rank): G4T2
State (S-rank): S2

Utah Wildlife Action Plan status

• SGCN

External links

• NatureServe species report
• Google image search
• Google web search

Description

Astragulus praelongus var. avonensis also known as Avon milkvetch is a short-lived, caulescentwith an evident stem above ground perennial herb arising from a slight subterranean caudexthe axis of a plant, consisting of stem and root to 1-9(12) dm tall. Herbage with basifixedanthers attached to the filament by the base pubescence. Stems erect to ascendingcurved upwards, growing upwards and forming clum

Phenology

Flowering from April to July.

Diagnostic characteristics

Avon milkvetch is distinguished from other varieties of A. praelongus by its slighlty subterranean caudexthe axis of a plant, consisting of stem and root with connateunited, used when structures or organs of the same kind are joined margin to margin (connate petals) to completely amplexicaulleaf extending around or clasping the stem stipulesleaf-, spine-, or scale-like structures below the leaf, usually in pairs at the base of the petiole and smaller flowers. 

Species range

Astragalus praelongus var. avonensis is a local endemic to the Utah Great Basin and is found in Iron, Beaver, and Millard counties.

Map

Threats or limiting factors

This variety has been impacted in the installation of a natural gas pipeline. Other threats include disturbances and habitat destruction from ATV use, grazing, and mining activities.

Taxonomy

No, this species does not have taxonomic discrepancies