tarweed

• Nom désignant toute plante d'Amérique du Nord et du Sud à feuillage résineux et glanduleux, appartenant notamment aux genres Madia et Grindelia, cette dernière ayant été utilisée en médecine traditionnelle et étant souvent toxique pour le bétail.

A noun referring to any of various resinous, glandular plants of the genus Madia, native to western North and South America, or any of various western American plants of the genus Grindelia with resinous leaves and stems formerly used medicinally, often poisonous to livestock.

1. Resinous plant of the genus MadiaC2formalamericanscientific

   Any of various resinous, glandular plants belonging to the genus Madia, native to western North and South America.

   Madia (plante résineuse)

   • Tarweed is commonly found in the coastal ranges of California.
   • The sticky resin of Madia species gives tarweed its characteristic name.
   • Botanists study tarweed for its unique glandular properties.

2. Resinous plant of the genus GrindeliaC2formalamericanscientific

   Any of various western American plants of the genus Grindelia, having resinous leaves and stems, formerly used medicinally but often poisonous to livestock.

   Grindélie (plante résineuse)

   • Grindelia tarweed was historically used by Native Americans for respiratory ailments.
   • Farmers must be cautious as tarweed can be toxic to grazing animals.
   • The bright yellow flowers of Grindelia tarweed bloom in late summer.

   Synonymesgrindeliagumweedrosinweed