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American dodder

Scientific Name: Cuscuta americana

Family: Cuscutaceae

Category: Dicot

Growth: Vine, Forb/herb

Duration: Perennial

Other Names:

       

American Dodder (Cuscuta americana)

American Dodder, scientifically known as Cuscuta americana, is a fascinating and widespread parasitic plant found across North America and beyond. Often referred to simply as "dodder," this plant exhibits unique characteristics and plays a significant role in the ecosystems it inhabits.

Considerations for Pets

  • Dodder has a very thin stem which may look like spaghetti to pets.

Considerations for Children

  • Dodder vine has a very thin stem.

Nomenclature and Taxonomy

  • Scientific Name: Cuscuta americana L.
  • Common Names: American Dodder, Dodder, Rope Dodder, Glomerate Dodder, Cluster Dodder.
  • Family: Convolvulaceae
  • Synonyms: The text mentions other Cuscuta species such as Cuscuta campestris, Cuscuta californica, Cuscuta gronovii, Cuscuta cephalanthii, Cuscuta applanata and Cuscuta approximata which are closely related.

Distribution and Habitat

  • American Dodder is thought to be native to North America, including Canada, the USA, and Mexico.
  • It is also found in PR, the Virgin Islands, VI, Navassa Island, NAV, Canada, CAN, Greenland, GL, Saint Pierre and Michelon, SPM, and North America.
  • It's often seen in marshes and roadsides.

Ecological Role

  • Dodder is a parasitic plant, meaning it relies on other plants (hosts) for survival.
  • It infests various crops, including leguminous crops like alfalfa and clover, as well as vegetable, forage, and ornamental crops.
  • The USDA classifies dozens of dodder species as Noxious Weeds.
  • Dodder is the only weed legally restricted as a contaminant in crop seed in each state of the continental United States.

Morphological Characteristics and Growth Habits

  • Dodder is an annual parasitic vine with smooth, wiry, twining stems.
  • The stems are typically yellow, orange, or red, and appear leafless.
  • The flowers range in color from white to pink to yellow to cream.
  • It produces a pea-sized fruit.
  • Dodder has very low levels of chlorophyll, so it appears pale yellow.

Interactions with Other Organisms

  • Dodder attaches to host plants using its twining stems.
  • It is known to parasitize Jewelweed stems.
  • It can damage leguminous crops, especially alfalfa and clover, and also impacts vegetable and forage crops, ornamentals, and native plants.

Quirky Facts

  • Native American women reportedly ate Buttonbush dodder (Cuscuta cephalanthii) as a contraceptive.
  • Before reaching a host plant, dodder survives on food reserves in its embryo.

Further Information

  • UC home and landscape guidelines for control of Dodder: See Home page, or in the U.S., contact your local Cooperative Extension office for assistance.
  • The Atlas of Florida Vascular Plants provides information for the distribution of plants within the state and taxonomic information.
  • USDA PLANTS Database.