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

congested sagewort, cudweed sagewort, Pacific alpine wormwood

Habit Perennials, 40–60(–100) cm (mat-forming), aromatic. Perennials, 30–50(–100) cm (densely cespitose), mildly aromatic (not rhizomatous, caudices subterranean, branches clothed with persistent leaf bases).
Stems

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

relatively numerous, ascending, brown, simple, hairy.

Leaves

deciduous, gray-green;

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

mostly basal (cauline mostly 2–4, smaller), whitish;

blades (basal) flabellate, 0.5–1(–2) × 0.5–0.8(–1.5) cm, relatively deeply lobed (lobes 5–9, linear), faces strigillose.

Involucres

broadly ovoid, 2–3 × 3–5 mm.

broadly campanulate, 3–4 × 3.5–5 mm.

Florets

pistillate 9–20;

bisexual 30–50;

corollas 1–2 mm, glandular.

pistillate 4–5;

bisexual 10–15;

corollas yellow (3–5-toothed), 2–2.5 mm, glabrous or sparsely pilose.

Phyllaries

gray-green, densely sericeous.

lanceolate (margins brownish), densely pilose.

Heads

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

(3–10, erect or nodding, peduncles 0 or to 15 mm) in subcapitate to corymbiform arrays 1–5 × 2–4 cm.

Cypselae

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

ellipsoid (flattened, margins ribbed), 1–1.5 mm, glabrous.

2n

= 18.

= 18, 27, 36, 54.

Artemisia absinthium

Artemisia glomerata

Phenology Flowering mid summer–fall. Flowering mid summer.
Habitat Widely cultivated, persisting from plantings, disturbed areas Arctic and alpine tundra and sandy slopes
Elevation 0–1000 m [0–3300 ft] 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
AK; YT
[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.)

Artemisia glomerata is similar to A. senjavinensis; it can be distinguished by its more deeply lobed leaves and sparser indument.

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

Source FNA vol. 19, p. 519. Treatment author: Leila M. Shultz. FNA vol. 19, p. 526. Treatment author: Leila M. Shultz.
Parent taxa Asteraceae > tribe Anthemideae > Artemisia > subg. Absinthium Asteraceae > tribe Anthemideae > Artemisia > subg. Artemisia
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. cana, A. carruthii, A. douglasiana, A. dracunculus, A. filifolia, A. franserioides, A. frigida, A. furcata, A. globularia, 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
Synonyms Ajania glomerata, A. glomerata var. subglabra, A. norvegica var. glomerata
Name authority Linnaeus: Sp. Pl. 2: 848. (1753) Ledebour: Mém. Acad. Imp. Sci. St. Pétersbourg Hist. Acad. 5: 564. (1815)
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