Burke: Artemisia absinthium vs. Artemisia laciniata

	Artemisia absinthium	Artemisia laciniata
	absinthe, oldman, wormwood
Habit	Fragrant perennial herb, 4-12 dm. tall, silky throughout with soft hairs at least when young.
Leaves	Lower leaves long-petiolate, 2-3 times pinnatifid, with oblong segments 1.5-4 mm. wide, the blade rounded-ovate in outline, 3-8 cm. long; other leaves progressively reduced upward.
Flowers	Inflorescence ample, leafy; involucre 2-3 mm. high, densely silky-hairy, dry and somewhat papery; corollas all tubular, yellowish, fertile, the marginal ones pistillate; receptacle covered with long, white hairs; pappus none.
Fruits	Achenes glabrous.

	Artemisia absinthium	Artemisia laciniata
Flowering time	July-September
Habitat	Roadsides, fields, ditches, wastelots, and other disturbed open areas.
Distribution	Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across much of North America to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]	[BONAP county map]
Origin	Introduced from Eurasia
Conservation status	Not of concern
Sibling taxa	A. annua, A. arbuscula, A. biennis, A. campestris, A. cana, A. douglasiana, A. dracunculus, A. frigida, A. furcata, A. ludoviciana, A. michauxiana, A. norvegica, A. rigida, A. spiciformis, A. stelleriana, A. suksdorfii, A. tilesii, A. tridentata, A. tripartita, A. vulgaris	A. absinthium, A. annua, A. arbuscula, A. biennis, A. campestris, A. cana, A. douglasiana, A. dracunculus, A. frigida, A. furcata, A. ludoviciana, A. michauxiana, A. norvegica, A. rigida, A. spiciformis, A. stelleriana, A. suksdorfii, A. tilesii, A. tridentata, A. tripartita, A. vulgaris
Web links	Local floras: BC, OR, WA Local Web sites: Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Artemisia absinthium

Artemisia laciniata

absinthe, oldman, wormwood

Habit

Fragrant perennial herb, 4-12 dm. tall, silky throughout with soft hairs at least when young.

Leaves

Lower leaves long-petiolate, 2-3 times pinnatifid, with oblong segments 1.5-4 mm. wide, the blade rounded-ovate in outline, 3-8 cm. long; other leaves progressively reduced upward.

Flowers

Inflorescence ample, leafy;

involucre 2-3 mm. high, densely silky-hairy, dry and somewhat papery;

corollas all tubular, yellowish, fertile, the marginal ones pistillate;

receptacle covered with long, white hairs;

pappus none.

Fruits

Achenes glabrous.