Artemisia campestris
Artemisia senjavinensis
beach wormwood, field sagewort, field wormwood, northern wormwood, Pacific sagewort, sand wormwood
arctic wormwood
usually 1–5, turning reddish brown, (often ribbed) tomentose or glabrous.
1–9, erect, gray-green, lanate.
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.
mostly basal (in rosettes, cauline 2–5, scattered on flowering stems);
blades (basal) broadly oblanceolate, 0.5–0.8 × 0.5–0.7 cm, relatively deeply lobed (lobes 3–5, acute; cauline blades 0.5–1 cm, entire or pinnately lobed, lobes 3–5), faces densely tomentose to sericeous (hairs 1–2 mm).
broadly turbinate, 2.5–3(–5) × 2–3.5(–7) mm.
turbinate, 3–4 × 3–5 mm.
pistillate 5–20; functionally staminate 12–30;
corollas pale yellow, sparsely hairy or glabrous.
pistillate 4–5;
bisexual 3–4;
corollas yellow or tan, 1.5–2, glandular (style branches blunt, not fringed).
(margins scarious) glabrous or villous-tomentose.
lanceolate or ovate, hairy.
(pedunculate) in (mostly leafless) paniculiform arrays.
in corymbiform arrays 0.5–2.5 × 0.5–2.5 cm (subtended by white-sericeous bracts).
oblong-lanceoloid, somewhat compressed, 0.8–1 mm, faintly nerved, glabrous.
(brown) linear-oblong, ca. 2 mm, (apices flat), glabrous.
= 36, 54.
Artemisia campestris
Artemisia senjavinensis
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.)
Artemisia senjavinensis is known only from western Alaska (Seward Peninsula) and the Chukchi Peninsula of the Russian Far East.
(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
