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boreal wormwood, field sagewort

alpine sagebrush, dwarf sagebrush

Habit Perennials, (6–)8–20(–40) cm (cespitose), mildly aromatic; taprooted, caudices branched. Perennials, 10–25 cm (cespitose), mildly aromatic (caudices relatively slender).
Stems

(1–)2–5, gray-green, tomentose.

gray-green, glabrate.

Leaves

persistent, basal rosettes persistent, gray-green to white;

blades ovate, 2–4 × 0.5–1 cm, 2–3-pinnately or -ternately lobed, lobes linear to narrowly oblong, apices acute, faces moderately to densely sericeous.

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

hemispheric, 3–4 × 3.5–4 mm.

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

Florets

pistillate 8–10; functionally staminate 15–30;

corollas (or lobes) yellow-orange or deep red, 2.2–3.5.

pistillate 6–13;

bisexual 15–30;

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

Phyllaries

(obscurely scarious) densely tomentose-villous.

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

Heads

(proximal sessile, distal pedunculate) in (leafy) spiciform arrays 4–9(–12) × (0.5–)1–5 cm.

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

Cypselae

oblong-lanceoloid, somewhat compressed, 0.4–1 mm, faintly nerved, glabrous.

0.8–1 mm, glabrous.

2n

= 18.

Artemisia borealis

Artemisia scopulorum

Phenology Flowering mid–late summer.
Habitat Alpine meadows, protected areas, bases of rocks
Elevation 3100–4200 m (10200–13800 ft)
Distribution
from FNA
AK; CA; CO; ID; MT; UT; WA; WY; AB; BC; NT; NU; SK; YT; especially at high elevations and northern latitudes; Eurasia
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[BONAP county map]
from FNA
CO; MT; NM; NV; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 2 (2 in the flora).

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

Key
1. Herbage villoso-tomentose, glabrate, or glabrous; corollas (at least lobes) usually yellow-orange, 2.2–3 mm; mountains, w North America
subsp. borealis
1. Herbage white-hoary; corollas (at least lobes) deep red, 3–3.5 mm; w arctic North America
subsp. richardsoniana
Source FNA vol. 19, p. 505. FNA vol. 19, p. 520.
Parent taxa Asteraceae > tribe Anthemideae > Artemisia > subg. Drancunculus 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. 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
Subordinate taxa
A. borealis subsp. borealis, A. borealis subsp. richardsoniana
Synonyms A. campestris subsp. borealis
Name authority Pallas: Reise Russ. Reich. 3: 755. (1776) A. Gray: Proc. Acad. Nat. Sci. Philadelphia 15: 66. (1863)
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