Artemisia douglasiana

Besser in W. J. Hooker
in W. J. Hooker, Fl. Bor.-Amer. 1: 323. 1833.
Common names: Northwest mugwort Douglas sagewort
Endemic
Synonyms: Artemisia campestris var. douglasiana (Besser) B. Boivin Artemisia caudata var. douglasiana (Besser) B. Boivin Artemisia commutata var. douglasiana (Besser) Besser Artemisia desertorum var. douglasiana Besser Artemisia heterophylla Nuttall Artemisia ludoviciana var. douglasiana (Besser) D. C. Eaton Artemisia vulgaris var. douglasiana (Besser) H. St. John
Treatment appears in FNA Volume 19. Treatment on page 524. Mentioned on page 522, 533.

Perennials, 50–180(–250) cm, aromatic (rhizomatous). Stems 1–20, erect, brown to gray-green, simple, hairy or glabrescent. Leaves cauline, bicolor (white and green to light gray-green); blades narrowly elliptic to widely oblanceolate, (1–)3–11(–15) × 0.5–2(–6) cm (proximal with 3–5 lateral lobes, distal mostly entire), faces sparsely tomentose (abaxial) to sparsely hairy (adaxial). Heads (usually nodding) in (leafy) paniculiform arrays 10–30 × 3–9 cm (branches widely spreading, ascending, stout). Involucres narrowly turbinate to campanulate, 2–3 × 2–4 mm. Phyllaries (green to gray) ovate, tomentose to pubescent. Florets: pistillate 6–10; bisexual 6–25; corollas pale yellow, 1–1.5 mm, glabrous, sometimes glandular. Cypselae ellipsoid, 0.5–1 mm, glabrous. 2n = 54.


Phenology: Flowering mid spring–late fall.
Habitat: Meadows, shaded sites, along drainages
Elevation: 100–2200 m

Distribution

V19-897-distribution-map.gif

Calif., Nev., Oreg., Wash.

Discussion

Artemisia douglasiana is sometimes weedy. Reports from areas outside the northwestern portion of the United States are based on misidentifications of plants in the A. ludoviciana complex.

Selected References

None.

Lower Taxa

None.

... more about "Artemisia douglasiana"
Leila M. Shultz +
Besser in W. J. Hooker +
Northwest mugwort +  and Douglas sagewort +
Calif. +, Nev. +, Oreg. +  and Wash. +
100–2200 m +
Meadows, shaded sites, along drainages +
Flowering mid spring–late fall. +
in W. J. Hooker, Fl. Bor.-Amer. +
Artemisia campestris var. douglasiana +, Artemisia caudata var. douglasiana +, Artemisia commutata var. douglasiana +, Artemisia desertorum var. douglasiana +, Artemisia heterophylla +, Artemisia ludoviciana var. douglasiana +  and Artemisia vulgaris var. douglasiana +
Artemisia douglasiana +
Artemisia subg. Artemisia +
species +