Annual Marshelder

(Iva annua L.)

Asteraceae (Aster Family)

▲ mature plant

▲ ▼ inflorescences

Annual Marshelder, Rough Marshelder:  (not in Weeds of the Great Plains, nor Weeds of the Northeast)

·        Native summer annual, similar in appearance to lanceleaf ragweed, but has less branching on stems and bracts in inflorescence curve upwards

·        Leaves are opposite, lanceolate to triangular with toothed margins, with long petioles

·        Stems often purplish or brown

·        Not a common weed problem