Cuscuta hyalina

Species category

Weed

Common name

kill weed

Diagnostic characters

Planting unit

True seedTrue seed:
A mature fertilized ovule consisting of an embryo, with or without and external food reserve (e.g., endosperm) enclosed by the testa.

Shape

Globose

Size

  • Length 0.8–1.1 mm
  • Width 0.6–1 mm
  • Thickness 0.6–1 mm

Color

Light brown

Texture

Rough

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is small and darker brown.

Identification notes

Surface is pitted and corky.

Noxious weed seed categories

State Noxious Weed: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Mississippi, Minnesota, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming

All species of Cuscuta are regulated as plant pests and require a pest permit for importation or interstate movement, but not all species are listed on the federal noxious weed list. Learn more about Cuscuta spp. on ITP's Federal Noxious Weed Disseminules tool.

AOSA examination list

Not included

More information

For more information, see ISMA fact sheet, Cuscuta spp.

Nomenclature

Family

Cuscutaceae

Valid name

Cuscuta hyalina Roth

 Cuscuta hyalina.  Seeds with a pitted and corky surface. Photo by Julia Scher, USDA-APHIS-PPQ.
Cuscuta hyalina. Seeds with a pitted and corky surface. Photo by Julia Scher, USDA-APHIS-PPQ.
 Cuscuta hyalina.  Small, dark brown hilum. Photo by Julia Scher, USDA-APHIS-PPQ.
Cuscuta hyalina. Small, dark brown hilum. Photo by Julia Scher, USDA-APHIS-PPQ.