Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Artemisia packardiae

Artemisia michauxiana

Packard's artemisia, Packard's wormwood, Succor Creek mugwort

lemon sagewort, Michaux' wormwood, Michaux's mugwort, Michaux's wormwood
Habit Perennials, 20–50(–60) cm, strongly aromatic (rhizomatous, fibrous-rooted). Perennials, 30–100 cm, strongly aromatic (lemon-scented; rhizomatous).
Stems

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

relatively many, erect, green, simple, 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).

cauline, green;

blades broadly lanceolate to narrowly elliptic, 1.5–11 × 1–1.5 cm, 2-pinnately lobed, (ultimate lobes toothed), faces white-tomentose (abaxial) or glabrous (adaxial), yellow-gland-dotted.
Involucres

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

campanulate, 3(–4) × 2–5.5 mm.
Florets

pistillate 3–8;

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

corollas bright yellow, 1.3–2.2 mm, glandular.

pistillate 9–12;

bisexual 15–35;

corollas yellow, 1–1.5 mm, glandular.
Phyllaries

broadly ovate, glandular (at least at bases).

(yellow-green, rarely purplish) broadly ovate, glabrous or sparsely hairy, yellow-gland-dotted.
Heads

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

(erect to nodding, peduncles 0 or to 10 mm) in paniculiform to spiciform arrays 8–15 × 1–1.5 cm.
Cypselae

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

(yellow to light brown) ellipsoid, ca. 0.5 mm, glabrous or glandular.
2n

= 18.

= 18, 36.

Artemisia packardiae

Artemisia michauxiana
Phenology Flowering late summer. Flowering mid summer–early fall.
Habitat Coarse taluses, alkaline soils, erosion gullies Talus slopes, alpine and subalpine drainages
Elevation 1000–2400 m (3300–7900 ft) 1900–3700 m (6200–12100 ft)
Distribution
from FNA
ID; NV; OR
[BONAP county map]
from FNA
CA; CO; ID; MT; NV; OR; UT; WA; WY; AB; BC; YT
[WildflowerSearch map]
[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.)

Members of the Artemisia ludoviciana complex with deeply lobed leaves are sometimes confused with A. michauxiana, and there is evidence that plants hybridize in some locations. Artemisia michauxiana is distinguished by its glabrous, bright green to yellow-green foliage and lemony-sweet fragrance.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 531. FNA vol. 19, p. 530.
Parent taxa Asteraceae > tribe Anthemideae > Artemisia > subg. Artemisia 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
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. nesiotica, A. norvegica, A. nova, A. packardiae, 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
Synonyms A. discolor, A. vulgaris subsp. michauxiana
Name authority J. W. Grimes & Ertter: Brittonia 31: 454, fig. 1. (1979) Besser: in W. J. Hooker, Fl. Bor.-Amer. 1: 324. (1833)
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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

The species comparison tool is brought to you by:
Northwest Wildflowers