Euphorbia maculata is
an annual herb, a native of North America, now
naturalized in western Japan; stems tinge light red and
are erect or diagonal, growing to 20-40cm in height.
Leaves are in opposite arrangement, 1.5-3.5cm long, in
an elliptical shape, and the right and left are
irregular in the form at the bases. Flowers come in
sparse cyathium inflorescences borne on branch tops.
Bloom time: June-October.