Artemisia campestris
Artemisia borealis
beach wormwood, field sagewort, field wormwood, northern wormwood, Pacific sagewort, sand wormwood
boreal wormwood, field sagewort
usually 1–5, turning reddish brown, (often ribbed) tomentose or glabrous.
(1–)2–5, gray-green, tomentose.
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.
broadly turbinate, 2.5–3(–5) × 2–3.5(–7) mm.
hemispheric, 3–4 × 3.5–4 mm.
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.
(margins scarious) glabrous or villous-tomentose.
(obscurely scarious) densely tomentose-villous.
(pedunculate) in (mostly leafless) paniculiform arrays.
(proximal sessile, distal pedunculate) in (leafy) spiciform arrays 4–9(–12) × (0.5–)1–5 cm.
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
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.)
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 |
- Local floras:
BC, 
OR, 
WA - Local Web sites:
CalFlora, CalPhotos, 
Flora NW, 
Go Botany, 
IL Wildflowers, 
KS Wildflowers, 
MI Flora, 
MN Wildflowers, 
MO Plants, 
PNW Herbaria 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
SW CO Wildflowers
