Artemisia absinthium |
Artemisia packardiae |
|
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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 |
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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 |
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]
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ID; NV; OR |
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. | FNA vol. 19, p. 531. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Linnaeus: Sp. Pl. 2: 848. (1753) | J. W. Grimes & Ertter: Brittonia 31: 454, fig. 1. (1979) |
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