The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

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

bursage mugwort, ragweed sagebrush

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.

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.

Involucres

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

broadly ovate, 3–5 × 4–5(–6) mm.

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.

Phyllaries

(margins scarious) glabrous or villous-tomentose.

broadly ovate, sparsely hairy.

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).

Cypselae

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

elliptic, 0.5–0.8 mm, glabrous.

Artemisia campestris

Artemisia franserioides

Phenology Flowering late summer–early fall.
Habitat Open coniferous forests, mid to upper montane
Elevation 2200–3100 m (7200–10200 ft)
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
AZ; CO; NM; Mexico (Chihuahua)
[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.)

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
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
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. 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
Name authority Linnaeus: Sp. Pl. 2: 846. (1753) Greene: Bull. Torrey Bot. Club 10: 42. (1883)
Web links