Artemisia globularia |
Artemisia cana |
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purple wormwood |
dwarf sagebrush, hoary sagebrush, silver sagebrush, silver wormwood, sticky sagebrush |
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Habit | Perennials, (3–)5–16(–30) cm (cespitose), faintly aromatic (not rhizomatous, taproots stout, caudices simple or branched, proximal branches clothed with persistent leaf bases). | Shrubs, 50–150 cm (trunks definite, freely branched from bases, branches erect), pleasantly aromatic; root-sprouting. | ||||||||||||
Stems | 1–5, erect, whitish gray, densely tomentose. |
light brown to gray-green (woody, somewhat pliable, leafy), persistently canescent to glabrescent. |
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Leaves | mostly basal (cauline 1–4), greenish to whitish green; blades (basal) 1–4.5 × 0.6–1.5 cm, 1–2-ternately to palmately lobed (flowering-stem blades 3-lobed), faces sparsely hairy. |
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. |
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Involucres | campanulate or hemispheric, 3.5–6 × 6–11 mm. |
(subtended by green, leaflike bracts) narrowly to broadly campanulate, 3–4 × 2–5 mm. |
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Florets | pistillate 9–10; bisexual 20–30; corollas yellow or reddish black, 2–3 mm, sometimes glandular. |
4–20; corollas 2–3 mm, resinous (style branches ellipsoid, to 2.3 mm, exsert, gland-dotted). |
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Phyllaries | lanceolate (margins brown), pilose. |
ovate or lanceolate (scarious margins nearly invisible), densely canescent. |
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Heads | (2–20, peduncles 0 or to 25 mm) in subcapitate to capitate arrays 2–3 × 2–3 cm. |
in (congested, leafy) paniculiform arrays 10–20 × 0.2–7 cm. |
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Cypselae | oblong, 1.5–2.5 mm, (apices flattened) glabrous. |
(light brown) 1–2.3 mm, resinous. |
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Artemisia globularia |
Artemisia cana |
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Distribution |
AK; YT; Asia |
AZ; CA; CO; ID; MT; ND; NE; NM; NV; OR; SD; UT; WY; AB; BC; MB; SK
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Discussion | Subspecies 2 (2 in the flora). (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.) |
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Key |
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Source | FNA vol. 19, p. 525. | FNA vol. 19, p. 512. | ||||||||||||
Parent taxa | ||||||||||||||
Sibling taxa | ||||||||||||||
Subordinate taxa | ||||||||||||||
Synonyms | Ajania globularia, A. norvegica subsp. globularia | Seriphidium canum | ||||||||||||
Name authority | Chamisso ex Besser: Nouv. Mém. Soc. Imp. Naturalistes Moscou 3: 64. (1833) | Pursh: Fl. Amer. Sept. 2: 521. (1813) | ||||||||||||
Web links |