Summary ²

Cynanchum louiseae, a species in the milkweed family, is also known as black swallow-wort, Louise's swallow-wort, or black dog-strangling vine. Cynanchum louiseae is a species of plant that is native to Europe and is found primarily in Italy, France, Portugal, and Spain. It is an invasive plant species in the northeastern United States, parts of the Midwest, southeastern Canada, and California.

Sources and Credits

1. (c) jacinta lluch valero, some rights reserved (CC BY-SA), https://www.flickr.com/photos/70626035@N00/15060096286/
2. (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Vincetoxicum_nigrum

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Calflora
• CalPhotos
• eFloras.org
• Flora Digital de Portugal
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• Go Botany
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Jepson eFlora
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
• New Zealand Plant Conservation Network
• SEINet Symbiota portals
• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online

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