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Utah Milkvetch

Astragalus utahensis (Torr.) Torr. & A. Gray

Comprehensive Description

provided by North American Flora
Xylophacos utahensis (Torr.) Rydb. Bull. Torrey Club 40:49. 1913.
Phaca mollissima utahensis Torr. in Stansb. Expl. Utah 385. 1852. Astragalus utahensis T. & G. Pacif. R. R. Rep. 2: 120. 1854. Tragacantha utahensis Kuntze, Rev. Gen. 949. 1891.
A densely cespitose perennial, with a deep root and woody caudex; stems of the season very short, 1—4 cm. long, decumbent; leaves spreading, 4—10 cm. long; stipules deltoid or ovate, 5-7 mm. long, scarious, villous; leaflets 11-19, white-floccose, broadly obovate or rounded-oval, 5-15 mm. long, 4—10 mm. wide, usually rounded at the apex, or the terminal one slightly retuse; peduncles 5-15 cm. long, villous; bracts deltoid, hyaline, 5-7 mm. long; calyx loosely villous, often purple-tinged, the tube about 1 cm. long, 4 mm. wide, the teeth about 4 mm. long, subulate; corolla about 2.5 cm. long, purple, in age bluish ; banner broadly obovate, deeply notched ; wings much shorter, the blade lance-oblong, with a very large auricle ; keelpetals still shorter, broad, with a rounded apex; pod very densely woolly, only slightly arcuate, 2 cm. long, 1 cm. thick, and 7-8 mm. wide.
Type locality: Shores and island of Great Salt Lake, Utah.
Distribution: Western Montana and western Wyoming to Utah, Nevada, and central Idaho.
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bibliographic citation
Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY
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Physical Description

provided by USDA PLANTS text
Perennial, Herbs, Stems woody below, or from woody crown or caudex, Taproot present, Nodules present, Stems very short, acaulescent or subacaulescent, Stems less than 1 m tall, Stems solid, Stems or young twigs sparsely to densely hairy, Stems silvery, canescent, tomentose, cobwebby, or wooly, Leaves alternate, Leaves petiolate, Stipules conspicuous, Stipules membranous or chartaceous, Stipules persistent, Stipules free, Leaves compound, Leaves odd pinnate, Leaf or leaflet margins entire, Leaflets opposite, Leaflets 10-many, Leaves hairy on one or both surfaces , Flowers in axillary clusters or few-floweredracemes, 2-6 flowers, Inflorescences racemes, Inflorescence umbel-like or subumbellate, Inflorescence axillary, Bracts very small, absent or caducous, Flowers zygomorphic, Calyx 5-lobed, Calyx gibbous, inflated, or spurred, Calyx glabrous, Petals separate, Corolla papilionaceous, Petals clawed, Petals pinkish to rose, Petals blue, lavander to purple, or violet, Banner petal narrow or oblanceolate, Wing petals narrow, oblanceolate to oblong, Wing tips obtuse or rounded, Keel petals auriculate, spurred, or gibbous, Keel tips obtuse or rounded, not beaked, Stamens 9-10, Stamens diadelphous, 9 united, 1 free, Filaments glabrous, Style terete, Style persistent in fruit, Fruit a legume, Fruit stipitate, Fruit unilocular, Fruit humistrate, lying on the ground, Fruit tardily or weakly dehiscent, Fruit oblong or ellipsoidal, Fruit exserted from calyx, Fruit beaked, Fruit hairy, Fruit 11-many seeded, Seeds cordiform, mit-shaped, notched at one end, Seed surface smooth, Seeds olive, brown, or black.
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Dr. David Bogler
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Missouri Botanical Garden
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USDA NRCS NPDC
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USDA PLANTS text

Astragalus utahensis

provided by wikipedia EN

Astragalus utahensis, commonly called the Utah milkvetch,[1] is a species of plant in the legume family.

It is native to western North America, in the U.S. states of Idaho, Nevada, Oregon, Utah, and Wyoming.[2] It is particularly abundant in the Wasatch Mountains.[3] Typical habitats include rocky hillsides, sagebrush openings, and pinyon-juniper areas.[4]

It produces pink-purple flowers in the spring.

References

  1. ^ USDA, NRCS (n.d.). "Astragalus utahensis". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 21 December 2017.
  2. ^ "Astragalus utahensis". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014. Retrieved 21 December 2017.
  3. ^ Welsh, Stanley; Atwood, N.; Goodrich, Sherel; Higgins, Larry (1987). A Utah Flora. Monte L Bean Life Science Museum.
  4. ^ Cronquist, Arthur; Holmgren, Arthur; Holmgren, Noel; James, Reveal; Holmgren, Patricia; Barneby, Rupert (1989). Intermountain Flora Volume Three. Part B. Fabales. Vascular Plants of the Intermountain West, U.S.A. New York Botanical Garden.
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Astragalus utahensis: Brief Summary

provided by wikipedia EN

Astragalus utahensis, commonly called the Utah milkvetch, is a species of plant in the legume family.

It is native to western North America, in the U.S. states of Idaho, Nevada, Oregon, Utah, and Wyoming. It is particularly abundant in the Wasatch Mountains. Typical habitats include rocky hillsides, sagebrush openings, and pinyon-juniper areas.

It produces pink-purple flowers in the spring.

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