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

boreal wormwood, field sagewort

Habit Biennials or perennials, (10–)30–80(–150) cm, faintly aromatic; taprooted, caudices branched. Perennials, (6–)8–20(–40) cm (cespitose), mildly aromatic; taprooted, caudices branched.
Stems

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

(1–)2–5, gray-green, tomentose.

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.

persistent, basal rosettes persistent, gray-green to white;

blades ovate, 2–4 × 0.5–1 cm, 2–3-pinnately or -ternately lobed, lobes linear to narrowly oblong, apices acute, faces moderately to densely sericeous.

Involucres

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

hemispheric, 3–4 × 3.5–4 mm.

Florets

pistillate 5–20; functionally staminate 12–30;

corollas pale yellow, sparsely hairy or glabrous.

pistillate 8–10; functionally staminate 15–30;

corollas (or lobes) yellow-orange or deep red, 2.2–3.5.

Phyllaries

(margins scarious) glabrous or villous-tomentose.

(obscurely scarious) densely tomentose-villous.

Heads

(pedunculate) in (mostly leafless) paniculiform arrays.

(proximal sessile, distal pedunculate) in (leafy) spiciform arrays 4–9(–12) × (0.5–)1–5 cm.

Cypselae

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

oblong-lanceoloid, somewhat compressed, 0.4–1 mm, faintly nerved, glabrous.

Artemisia campestris

Artemisia borealis

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
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; CA; CO; ID; MT; UT; WA; WY; AB; BC; NT; NU; SK; YT; especially at high elevations and northern latitudes; Eurasia
[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. Herbage villoso-tomentose, glabrate, or glabrous; corollas (at least lobes) usually yellow-orange, 2.2–3 mm; mountains, w North America
subsp. borealis
1. Herbage white-hoary; corollas (at least lobes) deep red, 3–3.5 mm; w arctic North America
subsp. richardsoniana
Source FNA vol. 19, p. 506. FNA vol. 19, p. 505.
Parent taxa Asteraceae > tribe Anthemideae > Artemisia > subg. Drancunculus Asteraceae > tribe Anthemideae > Artemisia > subg. Drancunculus
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. 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. tripartita, A. vulgaris
Subordinate taxa
A. campestris subsp. canadensis, A. campestris subsp. caudata, A. campestris subsp. pacifica
A. borealis subsp. borealis, A. borealis subsp. richardsoniana
Synonyms A. campestris subsp. borealis
Name authority Linnaeus: Sp. Pl. 2: 846. (1753) Pallas: Reise Russ. Reich. 3: 755. (1776)
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