September 15, 1804, in present-day Chamberlain, South Dakota.
Hairless, shrublike; from short rhizome. Leaves 3 in (7.6 cm), bright green. Flowers tiny, in 18-in (46-cm) clusters. Height: 5 ft (1.5 m).
Desert shrub communities to subalpine woods.
Widely distributed; Alaska (rare) and across most of Canada; in the contiguous U.S., from the Pacific coast to the Great Lakes and Texas; also Massachusetts to New Jersey.
This is the same species that yields the cooking herb tarragon. It is a member of the sagebrush genus.
