Artemisia campestris |
Artemisia franserioides |
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beach wormwood, field sagewort, field wormwood, northern wormwood, Pacific sagewort, sand wormwood |
bursage mugwort, ragweed sagebrush |
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Habit | Biennials or perennials, (10–)30–80(–150) cm, faintly aromatic; taprooted, caudices branched. | Biennials or perennials, 30–100 cm, faintly aromatic (rhizomatous). | ||||||||
Stems | usually 1–5, turning reddish brown, (often ribbed) tomentose or glabrous. |
1–3, erect, reddish brown, simple (leafy), glabrous or glabrate. |
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Leaves | persistent or deciduous, mostly basal; basal blades 4–12 cm; cauline gradually reduced, 2–4 × 0.5–1.5 cm, 2–3-pinnately lobed, lobes linear to narrowly oblong, apices acute, faces densely to sparsely white-pubescent. |
basal (in rosettes, petiolate) and cauline, bicolor (white and green); blades ovate, 3–7(–20) × 2–4(–6) cm, 2–3-pinnately-lobed (lobes elliptic, 2–6 mm wide; cauline sessile, smaller), faces tomentose (abaxial) or glabrous or glabrescent (adaxial), glandular. |
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Involucres | broadly turbinate, 2.5–3(–5) × 2–3.5(–7) mm. |
broadly ovate, 3–5 × 4–5(–6) mm. |
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Florets | pistillate 5–20; functionally staminate 12–30; corollas pale yellow, sparsely hairy or glabrous. |
pistillate 4–5(–13), (1–1.5 mm); bisexual 25–35; corollas yellow, 1.5–2 mm, glabrous. |
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Phyllaries | (margins scarious) glabrous or villous-tomentose. |
broadly ovate, sparsely hairy. |
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Heads | (pedunculate) in (mostly leafless) paniculiform arrays. |
(nodding, peduncles 0 or 2) in paniculiform to racemiform arrays 10–35 × 2–4 cm (often 1-sided). |
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Cypselae | oblong-lanceoloid, somewhat compressed, 0.8–1 mm, faintly nerved, glabrous. |
elliptic, 0.5–0.8 mm, glabrous. |
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Artemisia campestris |
Artemisia franserioides |
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Phenology | Flowering late summer–early fall. | |||||||||
Habitat | Open coniferous forests, mid to upper montane | |||||||||
Elevation | 2200–3100 m (7200–10200 ft) | |||||||||
Distribution |
AK; AR; AZ; CA; CO; CT; FL; IA; ID; IL; IN; KS; MA; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TX; UT; VT; WA; WI; WY; AB; BC; MB; NB; NU; ON; QC; SK; especially mountains and high latitudes; Eurasia
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AZ; CO; NM; Mexico (Chihuahua)
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Discussion | Subspecies ca. 7 (3 in the flora). Artemisia campestris varies; each morphologic form grades into another. The present circumscription is conservative in that only three subspecies are recognized; the subspecies usually can be separated geographically as well as morphologically. Populations in western North America consist primarily of subsp. pacifica; east of the continental divide, plants are assigned to subsp. canadensis in northern latitudes and to subsp. caudata in southern latitudes. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 19, p. 506. | FNA vol. 19, p. 525. | ||||||||
Parent taxa | ||||||||||
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Subordinate taxa | ||||||||||
Name authority | Linnaeus: Sp. Pl. 2: 846. (1753) | Greene: Bull. Torrey Bot. Club 10: 42. (1883) | ||||||||
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