CPC National Collection Plant Profile

Amorpha ouachitensis

Photographer:
George Yatskievych

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CPC National Collection Plant Profile

Amorpha ouachitensis


Family: 
Fabaceae  
Common Names: 
false indigo, Ouachita indigobush, Ouachita leadplant, Ouachita Mountain indigo, Ouachita Mountain leadplant
Author: 
Wilbur
Growth Habit: 
Shrub
CPC Number: 
108

Distribution
Protection
Conservation
References


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Amorpha ouachitensisenlarge
Photographer: George Yatskievych
george.yatskievych[at]mobot.org


Amorpha ouachitensis is Fully Sponsored
Primary custodian for this plant in the CPC National Collection of Endangered Plants is: 
Kimberlie McCue, Ph.D. contributed to this Plant Profile.

 
Amorpha ouachitensis


The Ouachita Mountain indigo is a small attractive shrub that grows to approximately 2 meters in height. The leaves are pinnately compound with broadly elliptical leaflets. The plant blooms from late April to early June. Individual flowers are tiny, but cluster together in the inflorescence, where the royal purple petals and gold anthers make a truly stunning display.

Distribution & Occurrence

State Range
  Arkansas
Oklahoma
State Range of  Amorpha ouachitensis
Habitat
  In clearings in woods on rocky hillsides, immediately adjacent to streams, near rocky creeks, stream banks, and flood plains.

Amorpha ouachitensis is found growing in association with Calamovilfa arcuata (also a rare plant), Streptanthus squamiformis, and Guara demareei.

Distribution
  In the Ouachita Mountain Province and the McAlester Marginal Hills Belt of southeastern Oklahoma, and the Ouachita Mountain Province in Arkansas (Zanoni et al.1979)

Number Left
  Currently known from at least eleven populations in eight counties in Arkansas and three counties (McCurtain, Leflore, Pushmataha) in Oklahoma (Oklahoma Natural Heritage Inventory 1999).

Protection

Global Rank:  
G3Q
 
1/10/1996
Guide to Global Ranks
Federal Status:  
SC
 
1/19/1996
Guide to Federal Status
Recovery Plan:  
No
 

State/Area Protection
  State/Area Rank Status Date  
  Arkansas S3 12/11/2001  
  Oklahoma S2 5/19/1999  

Conservation, Ecology & Research

Ecological Relationships
  None known.

Threats
  Alteration of streambanks
Conversion of wetland areas
Clear-cutting and conversion of forests to pine plantations
(Oklahoma Natural Heritage Inventory 1999)

Current Research Summary
  None known.

Current Management Summary
  Not Available

Research Management Needs
  Areas harboring populations of Ouachita indigobush should be protected from stream alteration or wetland drainage. Additional research into the life history of this plant is crucial (Oklahoma Natural Heritage Inventory 1999).

Monitoring Efforts
  Not Available

Ex Situ Needs
  Not Available

References

Books (Single Authors)

Gleason, H.A.; Cronquist, A. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Bronx: The New York Botanical Garden.

Isely, D. 1990. Vascular flora of the southeastern United States. Chapel Hill, NC: University of North Carolina Press. 258p.

Zanoni, T.A.; Gentry, J.L., Jr.; Tyrl, R.J.; Risser, P.G. 1979. Endangered and threatened plants of Oklahoma. Norman: University of Oklahoma and Oklahoma State University. 64p.

Books (Sections)

Kartesz, J.T. 1999. A synonymized checklist of the vascular flora of the U.S., Canada, and Greenland. In: Kartesz, J.T.; Meacham, C.A., editors. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden. Chapel Hill, NC.

Electronic Sources

(2002). New York Botanical Garden--The Virtual Herbarium. [Searchable Web site] New York Botanical Garden. Fordham Road Bronx, New York. http://scisun.nybg.org:8890/searchdb/owa/wwwspecimen.searchform. Accessed: 2002.

(2002). Rare and Vulnerable Plant Species of Oklahoma. Oklahoma Natural Heritage Inventory. http://www.biosurvey.ou.edu/candhome.html. Accessed: 2002.


  This profile was updated on 3/4/2010
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