Eastern Sampson's-snakeroot
Orbexilum pedunculatum var. psoralioides
Also listed as Orbexilum psoralioides, Orbexilum pedunculatum var. gracile
In the Carolinas and Georgia, found in longleaf pine savannas, loamy longleaf pine sandhills, open woodlands. FloraQuest, phone app (app page) What its natural habitat tells you
Native to Alabama. How scores work Is it native here?
Profile 59%
- Light
- Partial shade, Full sun
- Soil moisture
- Dry to moist
No photograph yet. Looking for an old drawing…
At a glance
- Bloom
- May to July
- Fruiting season
- July to September
Not yet recorded · Height · Spread · Life cycle · Leaves
Height: NC species account not read yet.
Spread, life cycle and leaves: no source found yet.
This plant is missing most of its facts, so Quercus is looking them up in old botany books.
Recorded in 25 Alabama counties.
Natural habitats
Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.
Open, fire-kept longleaf pine stands over grasses and wildflowers on wet to moist sandy soil.
Dry, deep-sand ridges with longleaf pine and turkey oak, kept open by fire.
Who uses this plant?
3CaterpillarsGenus host records with ranges including AL
Genus host records with ranges including AL · Orbexilum
- Cyclophora myrtariaWaxmyrtle Wave
- Cyclophora pendulinariaSweetfern Geometer
- Schinia jaguarinaJaguar Flower Moth
2BeesSoutheastern regional records
Southeastern regional records · Orbexilum
Individual names are not available yet.
Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
0Specialist beesPollen specialists
1BirdsRecorded genus food-resource interactions; not a state feeding claim
Recorded genus food-resource interactions; not a state feeding claim · Psoralea
- Perdix perdixGray Partridge
Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening
No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects
Plant details
- Family
- Fabaceae
- Fruit begins
- July
- Fruit ends
- September
Safety has not been reviewed for this plant; check toxicity and thorns before planting.
Growing sources and scope
- Bloom · “May to July” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
- Fruit begins · “July” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
- Fruit ends · “September” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
- Light · “Partial shade; Full sun (documented habitat)” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
- Soil · “Dry; Moist (documented habitat)” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
Also known as
Eastern Sampson's snakeroot; Orbexilum pedunculatum var. gracile; Orbexilum pedunculatum var. psoralioides; Psoralea psoralioides var. psoralioides
Conservation status
| Alabama rank | Not available |
|---|---|
| Global rank | G5 |
| AL status | Not verified |
| Federal status | Not verified |
Will it fit your yard?
Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.
Sources
- Alabama Plant Atlas
- Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
- Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
- Smith, Bachelder, Russell, Morales, Mosher & Seltmann 2024, Bee-Specialization-Modeling v0.6.1 (specialist host table compiled from J. Fowler's pollen specialist bee lists), Zenodo, CC BY 4.0
- Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)
- Narango, Tallamy & Shropshire 2020, Few keystone plant genera support the majority of Lepidoptera species, Nature Communications