n. The Chrysanthemum (Matricaria) Parthenium, a European species naturalized in the United States, formerly cultivated as a medicinal herb, and used as a bitter tonic in the cure of fevers. Some ornamental varieties are common in gardens. Also called wild camomile.n. A common name among florists for Chrysanthemum roseum, a native of the Caucasus, of which there are many single and double garden varieties.n. The agrimony, Agrimonia Eupatoria.