Artemisia campestris
Artemisia rupestris
beach wormwood, field sagewort, field wormwood, northern wormwood, Pacific sagewort, sand wormwood
sagebrush
usually 1–5, turning reddish brown, (often ribbed) tomentose or glabrous.
brownish purple, glabrous.
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, bright green;
blades (proximalmost petiolate) ovate, 1.5–5 × 1–2.5 cm, 2–3-pinnately lobed (cauline sessile, ternately or pinnately lobed, terminal lobes lance-linear, 1–6 × 0.5–1 mm), faces glabrous or sparsely hairy, glandular.
broadly turbinate, 2.5–3(–5) × 2–3.5(–7) mm.
globose, 4–5(–7) × 4–5(–7) mm.
pistillate 5–20; functionally staminate 12–30;
corollas pale yellow, sparsely hairy or glabrous.
pistillate 14–16 (glandular, style branches exsert, linear, spreading);
bisexual 40–70;
corollas 1.5–2 mm, glabrous or glandular (styles shorter than corollas).
(margins scarious) glabrous or villous-tomentose.
green (margins light green), ± hairy.
(pedunculate) in (mostly leafless) paniculiform arrays.
(5–9, pedunculate or sessile, spreading or drooping) in spiciform arrays 3–9 × 0.5–1 cm.
oblong-lanceoloid, somewhat compressed, 0.8–1 mm, faintly nerved, glabrous.
ca. 1 mm (apices flat), glabrous.
Artemisia campestris
Artemisia rupestris
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.)
The sole North American occurrence of Artemisia rupestris in southwestern Yukon is a remarkable disjunction from the Asiatic range of this species.
(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 |
- 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
