Flora of North America species comparison

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Artemisia longifolia

long-leaf sage, longleaf sagebrush, longleaf wormwood
Habit Perennials, 20–80 cm (not cespitose), pleasantly aromatic (fibrous-rooted, rootstocks relatively short, horizontal, layered stems sometimes sprouting).
Stems

3–20+, erect, gray-green, usually simple, sometimes branched (bases woody), densely tomentose.
Leaves

cauline, bicolor (white and green);

blades linear to lanceolate, 3–12 × 1 cm, margins usually entire, sometimes toothed or lobed, faces densely tomentose (abaxial) or glabrate (adaxial).
Involucres

campanulate, 4–5 × 4–5 mm.
Florets

pistillate 3–10;

bisexual 8–26;

corollas pale yellow, 1–2 mm, sparsely glandular.
Phyllaries

ovate-lanceolate (margins hyaline), densely to sparsely tomentose.
Heads

(peduncles 0 or to 2 mm) in mostly racemiform arrays 8–13 × 1–2 cm.
Cypselae

ellipsoid, 0.5–0.8 mm, glabrous.
2n

= 36.

Artemisia longifolia
Phenology Flowering mid summer–early fall.
Habitat Alkaline flats, grasslands, barren areas, high plains
Elevation 500–1800 m (1600–5900 ft)
Distribution
from FNA
ID; MN; MT; ND; NE; SD; WY; AB; BC; MB; SK
[WildflowerSearch map]
[BONAP county map]
Discussion

Artemisia longifolia appears to be more salt-tolerant than most species of the genus. It is closely related to A. ludoviciana.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 527.
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. ludoviciana, A. michauxiana, 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. ludoviciana var. integrifolia, A. natronensis, A. vulgaris subsp. longifolia, A. vulgaris var. longifolia
Name authority Nuttall: Gen. N. Amer. Pl. 2: 142. (1818)
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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