familyAsteraceae
genusArtemisia
subgenusArtemisia subg. Artemisia
speciesArtemisia ludoviciana
subspeciesArtemisia ludoviciana subsp. mexicana
Artemisia ludoviciana subsp. mexicana
Proc. Calif. Acad. Sci., ser. 4, 25: 452. 1946.
Common names: Mexican wormwood
Basionym: Artemisia mexicana Willdenow ex Sprengel Syst. Veg. 3: 490. 1826
Synonyms: Artemisia neomexicana Greene ex Rydberg Artemisia revoluta Rydberg
Stems 30–80(–100) cm, widely branched, sparsely hairy or glabrous. Leaves strongly bicolor (white and green, or gray-green and green), narrowly lanceolate, 4–10 × 0.5–1 cm, lobed; faces ± tomentose (abaxial) or glabrescent. Heads in paniculiform or racemiform arrays 1–8 × 2–5 cm. Involucres (campanulate) 3–4 × 2–3 mm. Florets: pistillate (5–)8–10; bisexual (6–)10–20; corollas ca. 1.5 mm. 2n = 18, 36.
Phenology: Flowering late summer–late fall.
Habitat: Mountain slopes, rocky soils
Elevation: 500–1000 m
Distribution
Ariz., Colo., Nev., N.Mex., Okla., Tex., Mexico.
Discussion
Selected References
None.
Lower Taxa
None.