| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Fabaceae | Amorpha canescens | Leadplant | Prairies, calcareous glades, exposed bluffs, dry open woodlands and oak savannas, pastures. | S. MI west to se. MT, south to IN, AR, LA, TX, and NM. |  |
| Fabaceae | Amorpha confusa | Savanna Indigo-bush | Longleaf pine savannas. A. confusa is restricted to moist loamy savannas, especially on the Foreston soil series, a habitat now largely destroyed by fire suppression, real estate development, and conversion of longleaf pine savannas to pine tree farms. | A. confusa is a narrow endemic of the se. Coastal Plain of NC (Brunswick, Columbus, and Bladen counties) and immediately adjacent SC (Horry County), where possibly extirpated. |  |
| Fabaceae | Amorpha crenulata | Miami Indigo-bush, Miami Leadplant | Low pine rocklands and adjacent sandy and marl prairies. | Endemic to s. peninsular FL. | |
| Fabaceae | Amorpha fruticosa | Tall Indigo-bush | Riverbanks, forests, woodlands, marsh edges, sometimes in disturbed sites. | NB west to WA, south to s. FL, TX, s. CA, and Mexico (BCN, CHH, SON). Considered adventive in the ne. US and Great Lakes region. |  |
| Fabaceae | Amorpha georgiana | Georgia Indigo-bush | Mesic and/or loamy pine savannas, sandy river terraces. | A. georgiana is endemic to the Coastal Plain of sc. NC, SC, and se. GA, primarily in the fall-line Sandhills region, but rarely found on younger terraces (as far east as Pender County, NC). Much of its habitat has been destroyed. |  |
| Fabaceae | Amorpha glabra | Appalachian Indigo-bush, Mountain Indigo | Dry to dry-mesic ridgetop and slope forests, primarily at low elevations around the higher Blue Ridge (such as eastwards in the Blue Ridge escarpment). | Endemic to the Southern Appalachian mountains (and nearby provinces) of n. AL, ne. GA, w. NC, nw. SC, and e. and c. TN. |  |
| Fabaceae | Amorpha herbacea var. floridana | Florida Indigo-bush | Pine flatwoods and sandy river terraces. | Se. GA (Echols County) south into FL (Sorrie 1998b). |  |
| Fabaceae | Amorpha herbacea var. herbacea | Dwarf Indigo-bush | Pine savannas, pine flatwoods, longleaf pine sandhills, other open forests and disturbed sites. | Endemic to FL, GA, SC, and NC, mostly limited to the Coastal Plain. |  |
| Fabaceae | Amorpha laevigata | Smooth Indigo-bush | Prairies, woodlands, roadsides. | OK south to n. LA and se. TX. | |
| Fabaceae | Amorpha nitens | Dark Indigo-bush, Shining Indigo-bush | Dry to mesic upland and riparian forests, ravines, bluffs, stream banks, glade margins, sandy woodlands, rocky slopes, bottomland forests, especially on calcareous or mafic rocks. | S. SC south to GA, west to s. LA, north in the interior to w. KY, s. IL, AR, and e. OK. First reported for SC by Nelson & Kelly (1997) and for MS by John Kees (2021). |  |
| Fabaceae | Amorpha ouachitensis | Ouachita Indigo-bush | Glades, rocky woodlands, along streams. | Ouachita Mountains and adjacent areas, of w. AR and e OK. | |
| Fabaceae | Amorpha paniculata | Panicled Indigo-bush | Marshes, sloughs. | S. AR and se. OK south to sw. LA and e. TX. |  |
| Fabaceae | Amorpha schwerinii | Piedmont Indigo-bush | Forests and woodlands, primarily rather xeric and rocky (though not exclusively so). | Endemic to the Piedmont (rarely adjacent provinces) of sc. NC, c. SC, nc. GA, e. AL, and ne. MS. |  |
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