Flora of North America species comparison

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Artemisia alaskana

Artemisia scopulorum

Alaska wormwood, alaskan sagebrush, Siberian wormwood

alpine sagebrush, dwarf sagebrush
Habit Perennials or subshrubs, 15–30(–60) cm (not cespitose), aromatic (caudices woody). Perennials, 10–25 cm (cespitose), mildly aromatic (caudices relatively slender).
Stems

1–10, erect, gray-green, simple (suffrutescent from woody offsets), densely hairy to glabrescent.

gray-green, glabrate.
Leaves

basal and cauline, mostly gray-green;

blades obovate, 1.5–5 × 0.5–1.5 cm, 3-lobed to 2-ternately lobed (lobes 0.5–3 mm wide, margins flat; cauline leaves smaller, sometimes entire), faces tomentose.

persistent, gray-green;

blades (basal) oblanceolate, 2–7 × 0.1 cm, 2-pinnately lobed (lobes linear or oblanceolate; cauline blades smaller, 1–2-pinnate or entire), faces silky-canescent.
Involucres

broadly campanulate, 3.5–5 × 6–9 mm.

broadly globose or subglobose, 4 × 4–7 mm.
Florets

pistillate 8–10;

bisexual 20–45;

corollas yellow, 2–2.5 mm, glabrous or glandular.

pistillate 6–13;

bisexual 15–30;

corollas 1.5–2.5 mm, hairy (at least on lobes).
Phyllaries

ovate (margins brownish or hyaline), tomentose.

green (margins black or dark brown), densely villous.
Heads

(peduncles 0 or to 30 mm) in (leafy) paniculiform to racemiform arrays 12–25 × 1–4.5 cm.

(5–22) in spiciform arrays 5–9 × 1–1.5 cm.
Cypselae

ellipsoid (flattened), 1–1.5 mm, glabrous.

0.8–1 mm, glabrous.
2n

= 18.

= 18.

Artemisia alaskana

Artemisia scopulorum
Phenology Flowering early–late summer. Flowering mid–late summer.
Habitat Well-drained soils, flood plains, gravel stream banks, roadsides, dry, rocky slopes, forest openings, alpine and arctic tundras Alpine meadows, protected areas, bases of rocks
Elevation 100–2500 m (300–8200 ft) 3100–4200 m (10200–13800 ft)
Distribution
from FNA
AK; BC; NT; YT
from FNA
CO; MT; NM; NV; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

As circumscribed here, Artemisia alaskana is known from northwestern North America. The type specimen of A. alaskana is atypical, with longer peduncles and narrower leaf lobes than are found in most populations.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 523. 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. 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. 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. pattersonii, A. pedatifida, A. pontica, A. porteri, A. pycnocephala, A. pygmaea, A. rigida, A. rothrockii, A. rupestris, A. senjavinensis, A. serrata, A. spiciformis, A. stelleriana, A. suksdorfii, A. tilesii, A. tridentata, A. tripartita, A. vulgaris
Synonyms A. tyrrellii
Name authority Rydberg: in N. L. Britton et al., N. Amer. Fl. 34: 281. (1916) A. Gray: Proc. Acad. Nat. Sci. Philadelphia 15: 66. (1863)
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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