What is "nipponanthemum"

''Nipponanthemum nipponicum'', common names "Nippon daisy" or "Montauk daisy," is a plant species native to coastal regions of Japan but cultivated as an ornamental in other regions. It is now naturalized as an escape along seashores in New York and New Jersey. It is the only species in the genus Nipponanthemum, formerly considered part of Chrysanthemum.

Nipponanthemum nipponicum is a shrub up to 100 cm (40 inches) tall. Most of the alternate leaves are clustered near the top of the stem. Flower heads are up to 8 cm (3 inches)across and are borne singly. Ray flowers are white, disc flowers usually yellow but sometimes red or purple.