Flora of North America species comparison

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Artemisia norvegica

Artemisia pattersonii

alpine sagewort, boreal wormwood, mountain sagewort, Norway sagewort

Patterson sagewort, Patterson's wormwood
Habit Perennials, 8–20 cm, mildly aromatic.
Stems

gray-brown, glabrate or finely pubescent.
Leaves

deciduous, gray-green; petiolate;

blades (basal) broadly spatulate, 2–4 × 0.5 cm, pinnately lobed (lobes ca. 1.5 mm wide; cauline smaller, 1-pinnately lobed or entire), faces silky-hairy.
Involucres

broadly hemispheric, 5–8 × 5–8(–10) mm.
Florets

pistillate 7–27;

bisexual 32–100;

corollas (yellow tinged with red), 2–3 mm (including exsert anthers), mostly glabrous (embedded in tangled receptacular hairs).
Phyllaries

gray (margins dark brown to black), villous.
Heads

borne singly or (2–5, spreading to nodding, pedunculate) in paniculiform or racemiform arrays 1–5 × 0.5–1 cm.
Cypselae

1.5–2 mm, glabrous.
2n

= 14.

Artemisia norvegica

Artemisia pattersonii
Phenology Flowering mid–late summer.
Habitat Alpine meadows
Elevation 3500–4000 m (11500–13100 ft)
Distribution
from FNA
AK; CA; CO; MT; UT; WA; WY; AB; BC; YT; Eurasia
[WildflowerSearch map]
[BONAP county map]
from FNA
CO; NM; WY
Discussion

Subspecies 2 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Artemisia pattersonii can be distinguished from the closely related A. scopulorum by its heads being borne singly and narrower phyllary margins.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 530. FNA vol. 19, p. 520.
Parent taxa Asteraceae > tribe Anthemideae > Artemisia > subg. Artemisia Asteraceae > tribe Anthemideae > Artemisia > subg. Absinthium
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. 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
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. packardiae, A. palmeri, A. papposa, 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
Subordinate taxa
A. norvegica subsp. saxatilis
Synonyms A. monocephala, A. scopulorum var. monocephala
Name authority Fries: Novit. Fl. Svec., 56. (1817) A. Gray: in A. Gray et al., Syn. Fl. N. Amer. ed. 2, 1(2): 453. (1886)
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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