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absinth wormwood, absinthe, absinthe wormwood, absinthium, armoise absinthe, common wormwood, green ginger, oldman, oldman wormwood, wormwood

dwarf sagebrush, hoary sagebrush, silver sagebrush, silver wormwood, sticky sagebrush

Habit Perennials, 40–60(–100) cm (mat-forming), aromatic. Shrubs, 50–150 cm (trunks definite, freely branched from bases, branches erect), pleasantly aromatic; root-sprouting.
Stems

gray-green (sometimes woody proximally), densely canescent to glabrescent (hairs appressed).

light brown to gray-green (woody, somewhat pliable, leafy), persistently canescent to glabrescent.

Leaves

deciduous, gray-green;

blades broadly ovate, 3–8 × 1–4 cm, mostly pinnately lobed (basal 2–3-pinnatifid, lobes obovate), faces densely canescent.

deciduous, whitish gray or green to dark gray-green;

blades narrowly elliptic to lanceolate, 1.5–8 × 0.2–1 cm, usually entire, sometimes irregularly lobed, sparsely to densely hairy.

Involucres

broadly ovoid, 2–3 × 3–5 mm.

(subtended by green, leaflike bracts) narrowly to broadly campanulate, 3–4 × 2–5 mm.

Florets

pistillate 9–20;

bisexual 30–50;

corollas 1–2 mm, glandular.

4–20;

corollas 2–3 mm, resinous (style branches ellipsoid, to 2.3 mm, exsert, gland-dotted).

Phyllaries

gray-green, densely sericeous.

ovate or lanceolate (scarious margins nearly invisible), densely canescent.

Heads

(nodding) in open (diffusely branched), paniculiform arrays 10–20(–35) × (2–)10–13(–15) cm.

in (congested, leafy) paniculiform arrays 10–20 × 0.2–7 cm.

Cypselae

(± cylindric, slightly curved, obscurely nerved), ± 0.5 mm, glabrous (shiny).

(light brown) 1–2.3 mm, resinous.

2n

= 18.

Artemisia absinthium

Artemisia cana

Phenology Flowering mid summer–fall.
Habitat Widely cultivated, persisting from plantings, disturbed areas
Elevation 0–1000 m [0–3300 ft]
Distribution
from FNA
CA; CO; CT; IA; ID; IL; IN; KS; MA; MD; ME; MI; MN; MO; MT; NC; ND; NE; NH; NJ; NY; OH; OR; PA; RI; SC; SD; TN; UT; VT; WA; WI; WY; AB; BC; MB; NB; NF; NS; ON; PE; QC; SK; Europe [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; CO; ID; MT; ND; NE; NM; NV; OR; SD; UT; WY; AB; BC; MB; SK
[WildflowerSearch map]
[BONAP county map]
Discussion

Artemisia absinthium provides the flavoring as well as the psychoactive ingredient for absinthe liquor, a beverage that is illegal in some markets. Known as a powerful neurotoxin, absinthe in large quantities is addictive as well as deadly. The species is popular in the horticultural trade. Prized by gardeners for its gracefully scalloped leaves and gray-green foliage, it creates an attractive and winter-hardy flower border.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Subspecies 3 (3 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Shrubs 100–150 cm; leaves 2–8 cm (entire); primarily e of continental divide
subsp. cana
1. Shrubs 50–90 cm; leaves 1.5–4 cm (usually some with irregular lobes); w of continental divide
→ 2
2. Stems felty-tomentose; leaves green to gray-green; involucres 4–5 mm diam.; California, Nevada, Oregon
subsp. bolanderi
2. Stems hairy (not felty-tomentose); leaves green to dark green; involucres 2–3(–4) mm diam.; Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, Wyoming
subsp. viscidula
Source FNA vol. 19, p. 519. Treatment author: Leila M. Shultz. FNA vol. 19, p. 512. Treatment author: Leila M. Shultz.
Parent taxa Asteraceae > tribe Anthemideae > Artemisia > subg. Absinthium Asteraceae > tribe Anthemideae > Artemisia > subg. Tridentatae
Sibling taxa
A. abrotanum, A. alaskana, A. aleutica, A. annua, A. arbuscula, A. biennis, A. bigelovii, A. borealis, A. californica, A. campestris, A. cana, A. carruthii, A. douglasiana, A. dracunculus, A. filifolia, A. franserioides, A. frigida, A. furcata, A. globularia, A. glomerata, A. laciniata, A. longifolia, A. ludoviciana, A. michauxiana, A. nesiotica, A. norvegica, A. nova, A. packardiae, A. palmeri, A. papposa, A. pattersonii, A. pedatifida, A. pontica, A. porteri, A. pycnocephala, A. pygmaea, A. rigida, A. rothrockii, A. rupestris, A. scopulorum, A. senjavinensis, A. serrata, A. spiciformis, A. stelleriana, A. suksdorfii, A. tilesii, A. tridentata, A. tripartita, A. vulgaris
A. abrotanum, A. absinthium, A. alaskana, A. aleutica, A. annua, A. arbuscula, A. biennis, A. bigelovii, A. borealis, A. californica, A. campestris, A. carruthii, A. douglasiana, A. dracunculus, A. filifolia, A. franserioides, A. frigida, A. furcata, A. globularia, A. glomerata, A. laciniata, A. longifolia, A. ludoviciana, A. michauxiana, A. nesiotica, A. norvegica, A. nova, A. packardiae, A. palmeri, A. papposa, A. pattersonii, A. pedatifida, A. pontica, A. porteri, A. pycnocephala, A. pygmaea, A. rigida, A. rothrockii, A. rupestris, A. scopulorum, A. senjavinensis, A. serrata, A. spiciformis, A. stelleriana, A. suksdorfii, A. tilesii, A. tridentata, A. tripartita, A. vulgaris
Subordinate taxa
A. cana subsp. bolanderi, A. cana subsp. cana, A. cana subsp. viscidula
Synonyms Seriphidium canum
Name authority Linnaeus: Sp. Pl. 2: 848. (1753) Pursh: Fl. Amer. Sept. 2: 521. (1813)
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