Gulf Coast Swallow-wort
Cynanchum angustifolium
In the Carolinas and Georgia, found in Coastal hammocks, edges of marshes, generally or always on barrier islands. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you
Native to Louisiana. How scores work Is it native here?
Profile 29%
Will it fit your yard?No photograph yet. Looking for an old drawing…
At a glance
- Life cycle
- Perennial
Not yet recorded · Height · Spread · Light · Soil · Leaves · Bloom
Height and bloom: NC species account not read yet.
Spread, light, soil 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 9 Louisiana parishes.
Natural habitats
Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.
Open, herb-covered wetlands with fresh, non-tidal water.
Who uses this plant?
5CaterpillarsGenus host records with ranges including LA
Genus host records with ranges including LA · Cynanchum
- Danaus plexippusMonarch
- Danaus gilippusQueen
- Erinnyis obscuraObscure Sphinx
- Euchaetes egleMilkweed Tussock Moth or Milkweed Tiger Moth
- Euptoieta claudiaVariegated Fritillary, (?)Gulf Fritillary
9BeesSoutheastern regional records
Southeastern regional records · Cynanchum
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
—BirdsRecorded genus food-resource interactions; not a state feeding claimNo records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects
Plant details
- Family
- Apocynaceae
- Flower color
- White or green
Safety has not been reviewed for this plant; check toxicity and thorns before planting.
Growing sources and scope
- Flower color · “White or green” · Lady Bird Johnson Wildflower Center
- Life cycle · “Perennial” · Lady Bird Johnson Wildflower Center
Also known as
Cynanchum angustifolium; Cynanchum palustre; Gulf Coast Swallow wort; Pattalias palustre; Pattalias palustris; honeyvine
Conservation status
| Louisiana rank | S4 |
|---|---|
| Global rank | G5 |
| LA 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
- NatureServe Explorer
- Vascular Plants of North Carolina (NC Natural Heritage Program)
- Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition
- Louisiana occurrence source
- 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