Amorpha ouachitensis
Wilbur
Ouachita Leadplant
G3VulnerableGlobal Rank
VulnerableIUCN
Identity
Unique IDELEMENT_GLOBAL.2.159298
Element CodePDFAB080B0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
IUCNVulnerable
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderFabales
FamilyFabaceae
GenusAmorpha
Other Common Names
Ouachita false indigo (EN) Ouachita False Indigo (EN) Ouachita Indigobush (EN)
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.
Taxonomic Comments
Kartesz (1999 Synthesis) recognizes as a distinct species; Kartesz notes (pers. comm. to Larry Morse, 25Nov99) that his acceptance of this species agrees with Iseley's 1998 treatment. However, these plants have been treated differently by others. Amorpha ouachitensis has been included with Amorpha glabra (Palmer, 1931) and A. virgata (Palmer, 1931), which Wilbur (1975) treated as a synonym of A. fruticosa. Wilbur (1975) believed the morphology of A. ouachitensis indicated a closer relationship with A. roemeriana. Tucker (1976) believed that it was poorly differentiated from A. nitens.
Conservation Status
Review Date1996-01-10
Change Date1990-09-18
Edition Date1987-05-26
Edition AuthorsRoth, E.
Range Extent<100-250 square km (less than about 40-100 square miles)
Rank Reasons
Over 56 known element occurrences rangewide.
Range Extent Comments
Endemic to the Ouachita Mountains of west central Arkansas and southeast Oklahoma: Leflore, McCurtain, Pushmatana Counties, Oklahoma; Conway, Garland, Logan, Montgomery, Polk Counties, Arkansas.
Occurrences Comments
About 56 element occurrences rangewide.
Threat Impact Comments
Cattle grazing, logging, brush clearing, and road construction.
Ecology & Habitat
Habitat
Clearings of rocky creeks and banks of streams, rocky ridges, glades; dry rocky sandstone slopes.
Other Nations (1)
United StatesN3
| Province | Rank | Native |
|---|---|---|
| Oklahoma | S2 | Yes |
| Arkansas | S3 | Yes |
Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (1)
Arkansas (1)
| Area | Forest | Acres |
|---|---|---|
| Blue Mountain | Ouachita National Forest | 9,755 |
References (1)
- 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.