Astragalus molybdenus var. lackschewitzii

(Lavin & Marriott) S. L. Welsh

N. Amer. Sp. Astragalus, 51. 2007.

Common names: Lackschewitz’s milkvetch
EndemicConservation concern
Basionym: Astragalus lackschewitzii Lavin & Marriott Syst. Bot. 22: 214, fig. 1. 1997
Treatment appears in FNA Volume 11.

Leaflets (13 or)15–23 distally, blade surfaces sparsely pubes-cent. Racemes (2 or)3–5-flow­ered. Legumes 3-sided com­pressed, 8.5–11.2 mm, gradually attenuated to a persistent style.


Phenology: Flowering Jul–Aug.
Habitat: Alpine tundra.
Elevation: 2200–2500 m.

Distribution

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Mont.

Discussion

Variety lackschewitzii is based on rather tenuous characteristics of leaflet pubescence and fruit compres­sion, made significant by the geographic isolation of the populations from the other two varieties.

Selected References

None.

Lower Taxa

None.
Stanley L. Welsh +
- Lavin & Marriott S. L. Welsh +
Astragalus lackschewitzii +
Lackschewitz’s milkvetch +
2200–2500 m. +
Alpine tundra. +
Flowering Jul–Aug. +
N. Amer. Sp. Astragalus, +
Endemic +  and Conservation concern +
Papilionoideae de +
Astragalus molybdenus var. lackschewitzii +
Astragalus molybdenus +
variety +