Black Swallowwort: Difference between revisions
Watlington (talk | contribs) (Created page with "'''Cynanchum louiseae''' ''a.k.a'' '''Vincetoxicum nigrum''' ([https://cisma-suasco.org/invasive/black-swallowwort/ CISMA], [https://gobotany.nativeplanttrust.org/species/cynanchum/louiseae/ GoBotany], Wikipedia, [https://plants.usda.gov/home/plantProfile?symbol=CYLO11 USDA]) is a twining, unbranched, perennial vine. Leaves are opposite, with smooth edges and a pointed tip. It has dark purple flowers, with five triangular petals. Fil...") |
Watlington (talk | contribs) (Realized two of the images were the same... Added a fourth, and a comment about this not being a common problem on Acton Conservation lands) |
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'''Cynanchum louiseae''' ''a.k.a'' '''Vincetoxicum nigrum''' ([https://cisma-suasco.org/invasive/black-swallowwort/ CISMA], [https://gobotany.nativeplanttrust.org/species/cynanchum/louiseae/ GoBotany], [[wikipedia:Vincetoxicum_nigrum|Wikipedia]], [https://plants.usda.gov/home/plantProfile?symbol=CYLO11 USDA]) is a twining, unbranched, perennial vine. Leaves are opposite, with smooth edges and a pointed tip. It has dark purple flowers, with five triangular petals. | '''Cynanchum louiseae''' ''a.k.a'' '''Vincetoxicum nigrum''' ([https://cisma-suasco.org/invasive/black-swallowwort/ CISMA], [https://gobotany.nativeplanttrust.org/species/cynanchum/louiseae/ GoBotany], [[wikipedia:Vincetoxicum_nigrum|Wikipedia]], [https://plants.usda.gov/home/plantProfile?symbol=CYLO11 USDA]) is a twining, unbranched, perennial vine. Leaves are opposite, with smooth edges and a pointed tip. It has dark purple flowers, with five triangular petals. | ||
While there are no known infestations of Black Swallowwort on Acton Conservation Lands, an abutter to [[Great Hill]] did remove an infestation. | |||
[[File:Vincetoxicum nigrum Ciemiężyk czarny 2020-08-07 01.jpg|thumb|267x267px|Black Swallowwort]] | [[File:Vincetoxicum nigrum Ciemiężyk czarny 2020-08-07 01.jpg|thumb|267x267px|Black Swallowwort]] | ||
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Removed plant material should be bagged, labelled, and provided to the Acton Natural Resources department for disposal. | Removed plant material should be bagged, labelled, and provided to the Acton Natural Resources department for disposal. | ||
Mowing does not stop growth, but it does stop the generation of seeds and subsequent spreading. | Mowing does not stop growth, but it does stop the generation of seeds and subsequent spreading. | ||
== Common Mis-identifications == | == Common Mis-identifications == | ||
[[File:Vincetoxicum nigrum01.jpg|left|thumb|267x267px|Black Swallowwort]] | |||
[[File:Vencetósigo negro - Vincetoxicum nigrum (15060096286).jpg|thumb|280x280px|Black Swallowwort Flowers]] | |||
It is sometimes confused with '''Pale Swallowwort''' ([https://gobotany.nativeplanttrust.org/species/cynanchum/rossicum/ ''Cynanchum'' ''rossicum'']'','' [[wikipedia:Vincetoxicum_rossicum|Wikipedia]]) which is also an invasive plant. | It is sometimes confused with '''Pale Swallowwort''' ([https://gobotany.nativeplanttrust.org/species/cynanchum/rossicum/ ''Cynanchum'' ''rossicum'']'','' [[wikipedia:Vincetoxicum_rossicum|Wikipedia]]) which is also an invasive plant. | ||
Latest revision as of 01:24, 18 January 2024
Cynanchum louiseae a.k.a Vincetoxicum nigrum (CISMA, GoBotany, Wikipedia, USDA) is a twining, unbranched, perennial vine. Leaves are opposite, with smooth edges and a pointed tip. It has dark purple flowers, with five triangular petals.
While there are no known infestations of Black Swallowwort on Acton Conservation Lands, an abutter to Great Hill did remove an infestation.
Removal
Black Swallowwort should be removed from the ground by digging up its rhizomes so that the plant cannot reproduce. The vine has an extensive rhizome system which must be completely removed to prevent new shoots from growing. Trying to remove the vine by pulling will often cause the plant to detach from its rhizome, allowing the vine to continue to grow new shoots. Seed pods must be disposed of carefully, to avoid inadvertently spreading the seeds to new areas.
Removed plant material should be bagged, labelled, and provided to the Acton Natural Resources department for disposal.
Mowing does not stop growth, but it does stop the generation of seeds and subsequent spreading.
Common Mis-identifications
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It is sometimes confused with Pale Swallowwort (Cynanchum rossicum, Wikipedia) which is also an invasive plant.