Artemisia ludoviciana is a perennial herb, 30 cm to 1 m tall, colonial from rhizomes; stems white wooly-hairy, unbranched below inflorescence.
Leaves alternate, 3-10 cm long, 1 cm wide, lance-shaped, entire to toothed or deeply lobed, white-wooly on both sides, or green above.
Flowers greenish, very small, in compact heads that arise from a bract-covered floral base (receptacle) about 0.3 cm tall, flowers tubular, radially symmetrical (disk flowers) 0.2 cm long; inflorescence branched.
Fruit: dry, 1-seeded (achenes) small.
Wetland status: UPL.
Frequency in NYC: Very infrequent.
Origin: Western and Midwestern US.
Habitat: Dry, open soil.
Notes: This is the only listing found for this plant.