Artemisia ludoviciana subsp. ludoviciana

unknown
Common names: Armoise de l’ouest
Synonyms: Artemisia brittonii RydbergArtemisia cuneata RydbergArtemisia diversifolia RydbergArtemisia falcata RydbergArtemisia gnaphaloides NuttallArtemisia herriotii RydbergArtemisia lindheimeriana ScheeleArtemisia pabularis (A. Nelson) RydbergArtemisia paucicephala A. NelsonArtemisia pudica RydbergArtemisia purshiana BesserArtemisia rhizomata A. Nelson
Treatment appears in FNA Volume 19. Treatment on page 528. Mentioned on page 527.
Stems (gray to white) mostly simple, 30–80 cm, tomentose. Leaves gray; blades linear to narrowly elliptic, 3–11 cm, margins plane (proximalmost entire or apically lobed, lobes to 1/3 blade lengths; cauline 1.5–11 × 1–1.5 cm, entire or lobed to pinnatifid), faces densely tomentose. Heads in congested, paniculiform or racemiform arrays 5–30 × 1–4 cm. Involucres 3–4 × 2–4 mm. Florets: pistillate 5–12; bisexual 6–30; corollas 1.9–2.8 mm. 2n = 18, 36.

Phenology: Flowering mid summer–late fall.
Habitat: Disturbed roadsides, open meadows, rocky slopes
Elevation: 100–3000 m

Distribution

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Alta., B.C., Man., N.B., Ont., P.E.I., Que., Sask., Ala., Ariz., Ark., Calif., Colo., Conn., Del., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., Wis., Wyo.

Discussion

Subspecies ludoviciana is widespread in North America in diverse habitats. It is the most common subspecies and the most variable morphologically.

References

None.

Lower Taxa

No lower taxa listed.