Flora of North America species comparison

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Artemisia packardiae

Packard's artemisia, Packard's wormwood, Succor Creek mugwort
Habit Perennials, 20–50(–60) cm, strongly aromatic (rhizomatous, fibrous-rooted).
Stems

3–20, erect, light brown, simple or branched, glabrous.
Leaves

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).
Involucres

campanulate to hemispheric, 2.5–3.5 × 2–4.5 mm.
Florets

pistillate 3–8;

bisexual, sometimes functionally staminate, (15–)20–35;

corollas bright yellow, 1.3–2.2 mm, glandular.
Phyllaries

broadly ovate, glandular (at least at bases).
Heads

(peduncles 0 or to 3 mm) in usually paniculiform, sometimes racemiform, arrays 5–20 × 1.5–4 cm.
Cypselae

(light brown) ellipsoid (± arcuate, ribs 4, prominent), ca. 1 mm, glandular.
2n

= 18.

Artemisia packardiae
Phenology Flowering late summer.
Habitat Coarse taluses, alkaline soils, erosion gullies
Elevation 1000–2400 m (3300–7900 ft)
Distribution
from FNA
ID; NV; OR
[BONAP county map]
Discussion

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.)
Source FNA vol. 19, p. 531.
Parent taxa 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. campestris, 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. 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
Name authority J. W. Grimes & Ertter: Brittonia 31: 454, fig. 1. (1979)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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