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

Packard's artemisia, Packard's wormwood, Succor Creek mugwort

Habit Perennials, 40–60(–100) cm (mat-forming), aromatic. Perennials, 20–50(–60) cm, strongly aromatic (rhizomatous, fibrous-rooted).
Stems

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

3–20, erect, light brown, simple or branched, glabrous.

Leaves

deciduous, gray-green;

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

cauline, dark green;

blades lanceolate, 1.5–5 × 1–2.5 cm, 2-pinnatifid (primary lobes 5–9, 0.4–1.5 cm; cauline smaller, pinnatifid to entire), faces tomentose (abaxial) or glabrous (adaxial).

Involucres

broadly ovoid, 2–3 × 3–5 mm.

campanulate to hemispheric, 2.5–3.5 × 2–4.5 mm.

Florets

pistillate 9–20;

bisexual 30–50;

corollas 1–2 mm, glandular.

pistillate 3–8;

bisexual, sometimes functionally staminate, (15–)20–35;

corollas bright yellow, 1.3–2.2 mm, glandular.

Phyllaries

gray-green, densely sericeous.

broadly ovate, glandular (at least at bases).

Heads

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

(peduncles 0 or to 3 mm) in usually paniculiform, sometimes racemiform, arrays 5–20 × 1.5–4 cm.

Cypselae

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

(light brown) ellipsoid (± arcuate, ribs 4, prominent), ca. 1 mm, glandular.

2n

= 18.

= 18.

Artemisia absinthium

Artemisia packardiae

Phenology Flowering mid summer–fall. Flowering late summer.
Habitat Widely cultivated, persisting from plantings, disturbed areas Coarse taluses, alkaline soils, erosion gullies
Elevation 0–1000 m [0–3300 ft] 1000–2400 m [3300–7900 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
ID; NV; OR
[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 packardiae is known only from southeastern Oregon, western Idaho, and northeastern Nevada. It is closely related to A. michauxiana and could be considered an ecologic variant.

(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. 531. 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. glomerata, A. laciniata, A. longifolia, A. ludoviciana, A. michauxiana, A. nesiotica, A. norvegica, A. nova, 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
Name authority Linnaeus: Sp. Pl. 2: 848. (1753) J. W. Grimes & Ertter: Brittonia 31: 454, fig. 1. (1979)
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