Artemisia packardiae
Artemisia campestris
Packard's artemisia, Packard's wormwood, Succor Creek mugwort
beach wormwood, field sagewort, field wormwood, northern wormwood, Pacific sagewort, sand wormwood
3–20, erect, light brown, simple or branched, glabrous.
usually 1–5, turning reddish brown, (often ribbed) tomentose or glabrous.
cauline, dark green;
blades lanceolate, 1.5–5 × 1–2.5 cm, 2-pinnatifid (primary lobes 5–9, 0.4–1.5 cm; cauline smaller, pinnatifid to entire), faces tomentose (abaxial) or glabrous (adaxial).
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.
campanulate to hemispheric, 2.5–3.5 × 2–4.5 mm.
broadly turbinate, 2.5–3(–5) × 2–3.5(–7) mm.
pistillate 3–8;
bisexual, sometimes functionally staminate, (15–)20–35;
corollas bright yellow, 1.3–2.2 mm, glandular.
pistillate 5–20; functionally staminate 12–30;
corollas pale yellow, sparsely hairy or glabrous.
broadly ovate, glandular (at least at bases).
(margins scarious) glabrous or villous-tomentose.
(peduncles 0 or to 3 mm) in usually paniculiform, sometimes racemiform, arrays 5–20 × 1.5–4 cm.
(pedunculate) in (mostly leafless) paniculiform arrays.
(light brown) ellipsoid (± arcuate, ribs 4, prominent), ca. 1 mm, glandular.
oblong-lanceoloid, somewhat compressed, 0.8–1 mm, faintly nerved, glabrous.
= 18.
Artemisia packardiae
Artemisia campestris
Artemisia packardiae is known only from southeastern Oregon, western Idaho, and northeastern Nevada. It is closely related to A. michauxiana and could be considered an ecologic variant.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
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
