Artemisia campestris |
Artemisia globularia |
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beach wormwood, field sagewort, field wormwood, northern wormwood, Pacific sagewort, sand wormwood |
purple wormwood |
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Habit | Biennials or perennials, (10–)30–80(–150) cm, faintly aromatic; taprooted, caudices branched. | Perennials, (3–)5–16(–30) cm (cespitose), faintly aromatic (not rhizomatous, taproots stout, caudices simple or branched, proximal branches clothed with persistent leaf bases). | ||||||||||||
Stems | usually 1–5, turning reddish brown, (often ribbed) tomentose or glabrous. |
1–5, erect, whitish gray, densely tomentose. |
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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. |
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. |
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Involucres | broadly turbinate, 2.5–3(–5) × 2–3.5(–7) mm. |
campanulate or hemispheric, 3.5–6 × 6–11 mm. |
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Florets | pistillate 5–20; functionally staminate 12–30; corollas pale yellow, sparsely hairy or glabrous. |
pistillate 9–10; bisexual 20–30; corollas yellow or reddish black, 2–3 mm, sometimes glandular. |
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Phyllaries | (margins scarious) glabrous or villous-tomentose. |
lanceolate (margins brown), pilose. |
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Heads | (pedunculate) in (mostly leafless) paniculiform arrays. |
(2–20, peduncles 0 or to 25 mm) in subcapitate to capitate arrays 2–3 × 2–3 cm. |
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Cypselae | oblong-lanceoloid, somewhat compressed, 0.8–1 mm, faintly nerved, glabrous. |
oblong, 1.5–2.5 mm, (apices flattened) glabrous. |
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Artemisia campestris |
Artemisia globularia |
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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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AK; YT; Asia |
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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.) |
Subspecies 2 (2 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. 506. | FNA vol. 19, p. 525. | ||||||||||||
Parent taxa | Asteraceae > tribe Anthemideae > Artemisia > subg. Drancunculus | Asteraceae > tribe Anthemideae > Artemisia > subg. Artemisia | ||||||||||||
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Subordinate taxa | ||||||||||||||
Synonyms | Ajania globularia, A. norvegica subsp. globularia | |||||||||||||
Name authority | Linnaeus: Sp. Pl. 2: 846. (1753) | Chamisso ex Besser: Nouv. Mém. Soc. Imp. Naturalistes Moscou 3: 64. (1833) | ||||||||||||
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