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beach wormwood, field sagewort, field wormwood, northern wormwood, Pacific sagewort, sand wormwood

cut-leaf sagebrush, three-tip sagebrush

Habit Biennials or perennials, (10–)30–80(–150) cm, faintly aromatic; taprooted, caudices branched. Shrubs, 5–15 or 20–150(–200) cm, aromatic; root-sprouting (caudices with adventitious buds, fibrous rooted).
Stems

usually 1–5, turning reddish brown, (often ribbed) tomentose or glabrous.

pale gray, glabrous.

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.

deciduous, gray-green;

blades broadly cuneate, 1.5–4 × 0.5–2 cm, deeply 3-lobed (lobes 1–1.4 mm wide, acute; cauline leaves smaller, mostly 3-lobed).

Involucres

broadly turbinate, 2.5–3(–5) × 2–3.5(–7) mm.

globose or turbinate, 2–4 × 1.5–3 mm.

Florets

pistillate 5–20; functionally staminate 12–30;

corollas pale yellow, sparsely hairy or glabrous.

3–11;

corollas 2–2.5 mm, glandular (style branches included).

Phyllaries

(margins scarious) glabrous or villous-tomentose.

broadly lanceolate (margins scarious, obscured by indument), canescent.

Heads

(pedunculate) in (mostly leafless) paniculiform arrays.

in paniculiform or spiciform arrays (5–)8–15(–35) × (0.5–)1–5 cm.

Cypselae

oblong-lanceoloid, somewhat compressed, 0.8–1 mm, faintly nerved, glabrous.

(columnar, unequally ribbed) 1.8–2.3 mm, glabrous or resinous.

Artemisia campestris

Artemisia tripartita

Distribution
from FNA
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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[BONAP county map]
from FNA
ID; NV; OR; WA; WY; BC
[WildflowerSearch map]
[BONAP county map]
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.)

Key
1. Perennials; stems 2–5; basal rosettes persistent
subsp. pacifica
1. Biennials; stems 1(–3); basal rosettes not persistent (withering before flowering)
→ 2
2. Involucres globose, 3–4 × 3.5–5 mm; n of 50°, primarily Canada
subsp. canadensis
2. Involucres turbinate, 2–3 × 2–3 mm; s of 50°, e from Rocky Mountains to coastal North America
subsp. caudata
1. Shrubs 20–150(–200) cm; lobes of leaves linear, to 0.5 mm wide; loamy soils, w of continental divide
subsp. tripartita
1. Shrubs 5–15 cm; lobes of leaves lanceolate, 1–1.5 mm wide; stony grasslands, e Wyoming
subsp. rupicola
Source FNA vol. 19, p. 506. FNA vol. 19, p. 518.
Parent taxa Asteraceae > tribe Anthemideae > Artemisia > subg. Drancunculus Asteraceae > tribe Anthemideae > Artemisia > subg. Tridentatae
Sibling taxa
A. abrotanum, A. absinthium, A. alaskana, A. aleutica, A. annua, A. arbuscula, A. biennis, A. bigelovii, A. borealis, A. californica, 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. 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. vulgaris
Subordinate taxa
A. campestris subsp. canadensis, A. campestris subsp. caudata, A. campestris subsp. pacifica
A. tripartita subsp. rupicola, A. tripartita subsp. tripartita
Synonyms A. trifida, A. tridentata subsp. trifida, Seriphidium tripartitum
Name authority Linnaeus: Sp. Pl. 2: 846. (1753) Rydberg: Mem. New York Bot. Gard. 1: 432. (1900)
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