Wild Poinsettia or Toothed Spurge: Euphorbia dentata
|Weed Description: Erect annual
with lanceolate leaves that often have at least one dark red spot. All parts of the
plant emit a milky sap when broken. Toothed spurge may reach 2 feet in height and is
found from New York west to Arizona. Toothed spurge is primarily a weed of pastures,
hayfields, roadsides, and other noncrop areas.
Stems: Stems are erect, branching oppositely from the base, and hairy. Broken stems emit a milky sap.
are lanceolate in outline,
approximately 1/2 to 3 inches long, with toothed margins. Leaves are oppositely
arranged, usually have hairs, and often have at least one dark red spot on the upper
surface, especially with age. Lower leaves may sometimes be alternately arranged.
Leaves at the ends of stems near the flowers often appear whorled.
Flowers: Flowers occur in clusters at the ends of branches. Flowers are relatively inconspicuous and have no petals.
|Fruit: A capsule that is
yellowish-green in color and smooth. Each capsule normally contains 3 seeds.
Identifying Characteristics: Opposite, lanceolate leaves with dark red markings and milky sap emitted by all parts of the plant.