Amorpha nana - Nutt.
Fragrant Indigobush
Taxonomic Status: Accepted
Related ITIS Name(s): Amorpha nana Nutt. (TSN 25379)
Unique Identifier: ELEMENT_GLOBAL.2.155897
Element Code: PDFAB08090
Informal Taxonomy: Plants, Vascular - Flowering Plants - Pea Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Fabales Fabaceae Amorpha
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Concept Reference
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Concept Reference: Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Amorpha nana
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 19Jan1984
Global Status Last Changed: 19Jan1984
Rounded Global Status: G5 - Secure
Reasons: Widespread throughout much of the midwest from Canada to Colorado and New Mexico, particularly in the northern Great Plains region.
Nation: United States
National Status: N5
Nation: Canada
National Status: N3N4 (24Nov2017)

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Colorado (S2), Iowa (S2), Kansas (S1), Minnesota (SNR), Nebraska (S1), New Mexico (SNR), North Dakota (SNR), Oklahoma (SNR), South Dakota (SNR)
Canada Manitoba (S3S4)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Prairies, hillsides, plains, and buttes, primarily of the northern plains; from southern Manitoba and Saskatchewan to Minnesota and northwest Iowa, from North Dakota to Oklahoma, west to Colorado and New Mexico.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Prairies, hillsides, plains, and buttes, primarily of the northern plains; from southern Manitoba and Saskatchewan to Minnesota and northwest Iowa, from North Dakota to Oklahoma, west to Colorado and New Mexico.

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States CO, IA, KS, MN, ND, NE, NM, OK, SD
Canada MB

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
CO Boulder (08013), El Paso (08041), Jefferson (08059), Las Animas (08071)
IA Bremer (19017), Cerro Gordo (19033)*, Clay (19041), Dickinson (19059), Emmet (19063)*, Hardin (19083), Kossuth (19109), Lyon (19119)*, Palo Alto (19147), Pocahontas (19151)
KS Chase (20017), Clark (20025), Ellis (20051), Geary (20061)*, Rooks (20163), Wabaunsee (20197)*
NE Boyd (31015), Cedar (31027)*, Holt (31089)*, Knox (31107)*
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
07 Blue Earth (07020009)+*, Upper Cedar (07080201)+, Winnebago (07080203)+*, Upper Iowa (07080207)+, Upper Des Moines (07100002)+, East Fork Des Moines (07100003)+, Middle Des Moines (07100004)+
10 Ponca (10150001)+*, Lower Niobrara (10150007)+, Lewis and Clark Lake (10170101)+*, Lower Big Sioux (10170203)+*, St. Vrain (10190005)+, Little Sioux (10230003)+, Upper Saline (10260009)+, Upper Kansas (10270101)+*, Middle Kansas (10270102)+*
11 Fountain (11020003)+, Purgatoire (11020010)+, Upper Cimarron-Bluff (11040008)+, Lower Cottonwood (11070203)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A small undershrub, 1-10 dm tal, glabrous, branching to ascending; member of the subfamily Papilionoideae, tribe Psoraleae.
Technical Description: A low, erect, apparently rhizomatose shrub 1-10 dm tall; newer branches reddish-brown to pale olivaceous, clustered near top of stem, older branches usually light gray or pale brownish, slightly lined. Leaves numerous, alternate, odd-pinnate, spreading to ascendant, 1.5-10 cm long; rachis slender, usually 0.3-0.7 mm in diameter, glabrous to very short-puberulent or strigillose. Petioles sparsely to densely strigillose or somewhat finely spreading-puberulent and becoming glabrous, about 2-10 mm long, very sparingly pustulate-glandular. Stipules inconspicuous, caducous, short-pubescent along margins and outer surface, appressed to spreading, setaceous to linear, 2-6.5 mm long. Leaflets usually 3-15 pairs plus 1, 2-16 mm long, 3-7 mm wide, crowded; blade narrowly to broadly oblong or somewhat elliptical, rounded or cuneate at base, apex broadly rounded or truncate and usually emarginate with midvein exserted into a tapering mucro usually 0.6-1.5 mm long; texture coriaceous to subcoriaceous when dry. Racemes solitary at the tips of season's growth, contracted and densely flowered, 2-9 cm long and 1-1.5 cm in diameter, subsessile or the peduncle 0.3-2.0 cm long; pedicels 2-3 mm long; calyx tube turbinate, about 2 mm long, glabrous, with punctate glands, lobes narrowly triangular-lanceolate and acute, 1-2 mm long, glabrous, punctate-glandular. Petal 1, 4.5-6 mm long, obcordate, with a slender claw, enveloping stamens and pistil, dark purple; stamens 10, filaments united below, 6-8 mm long, glabrous; anthers 0.4-0.6 mm long. Pistil 4.0-6.0 mm long, glabrous ovary about 0.8 mm high, an antrorsely pubescent style 2.5-5 mm long, and a small, capitate, terminal stigma. Legume a 1-seeded, indehiscent pod, 4.5-5.5 mm long, 2-3 mm wide, glabrous, oblongish but tapering to a stipe-like base 0.5 mm long, conspicuously punctate-glandular in upper two-thirds; seed 2.5-3 mm long, 1.5 mm wide, olive-brown. (Wilbur 1975)
Diagnostic Characteristics: Foliage and calyces glabrous or nearly so, never canascent; racemes solitary at tips of stems and branches.
Duration: PERENNIAL
Reproduction Comments: Amorpha is hermaphroditic with irregular perfect flowers. In Fabaceae self-sterility is rare; however, four flower mechanisms exist in Fabaceae that promote cross-pollination.
Terrestrial Habitat(s): Grassland/herbaceous
Habitat Comments: Dry prairies, hillsides, plains, buttes, mesas, and rocky hillsides.
Economic Attributes
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Economic Uses: FOOD, Fruit, ESTHETIC, Showy wildflower
Economic Comments: Element serves as a food for wildlife; showy flowers are purple, violet, or white.
Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 23Jun1995
NatureServe Conservation Status Factors Author: Jennifer Snyder
Element Ecology & Life History Author(s): JENNIFER SNYDER

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
Help
  • Cody, W.J. 1988. Plants of Riding Mountain National Park, Manitoba. Agriculture Canada, Publication 1818/E, Ottawa ON.

  • Gleason and Cronquist. 1991. A Flora of the Northeastern United States and Adjacent Canada.

  • Great Plains Flora Association (R.L. McGregor, coordinator; T.M. Barkley, ed., R.E. Brooks and E.K. Schofield, associate eds.). 1986. Flora of the Great Plains. University Press of Kansas, Lawrence, Kansas. 1392 pp.

  • Great Plains Flora Association. 1986. Flora of the Great Plains. University Press of Kansas, Lawrence, KS. 1402 pp.

  • Harrington, H. D. 1954. Manual of the Plants of Colorado. Sage Books, Denver, CO. 666 pp.

  • Herbarium, Department of Botany, University of Manitoba, Winnipeg, Manitoba, Canada.

  • Herbarium, Museum of Man and Nature, 190 Rupert Avenue, Winnipeg, Manitoba.

  • Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

  • Love, D. & J.P. Bernard. 1959. Flora and vegetation of the Otterburne area, Manitoba, Canada. Svensk Botanisk Tidskrift 53:335-461.

  • Marshall, H.H. 1989. Pembina Hills Flora. Morden and District Museum Inc., Morden MB.

  • Scoggan, H.J. 1978. The Flora of Canada. National Museum of Natural Sciences, National Museum of Canada, Publ. in Botany 7(4).

  • Weber, W. A. 1990. Colorado Flora: Eastern Slope. University Press of Colorado, Niwot, CO.

  • Weber, W. A. and R. C. Wittmann. 2012. Colorado Flora, Eastern Slope, A Field Guide to the Vascular Plants, Fourth Edition. Boulder, Colorado. 555 pp.

  • Weber, W.A. 1976. Rocky Mountain Flora. 5th edition. Colorado Assoc. University Press, Boulder, Colorado. 479pp.+ addenda

  • Weber, W.A. 1990. Colorado Flora: eastern slope. Univ. Press Colorado, Niwot. 396 pp.

  • Wilbur, R.L. 1975. A revision of the North American genus Amorpha (Leguminosae-Psoraleae). Rhodora 77(811): 337-409.

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