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boreal wormwood, field sagewort

beach sagewort, beach wormwood, coastal sagewort, sandhill sage

Habit Perennials, (6–)8–20(–40) cm (cespitose), mildly aromatic; taprooted, caudices branched. Perennials, 30–70(–100) cm, faintly aromatic.
Stems

(1–)2–5, gray-green, tomentose.

usually 10+ (rising beyond basal leaves, decumbent), whitish gray, (ca. 5 mm diam., densely leafy) densely hairy.

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 broadly lanceolate, faces woolly-hairy;

proximalmost blades 3–8 × 2–6 cm, 2–3-pinnatifid, lobes linear (to 2 mm wide);

cauline somewhat reduced, 2–3 × 0.8–1.2 cm;

apices acute, faces hairy.

Involucres

hemispheric, 3–4 × 3.5–4 mm.

globose, 3–4.5 × 3–4.5 mm.

Florets

pistillate 8–10; functionally staminate 15–30;

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

pistillate 5–20; functionally staminate 12–25;

corollas pale yellow (broadly tubular), ca. 2 mm, glabrous.

Phyllaries

(obscurely scarious) densely tomentose-villous.

lanceolate, margins obscured by indument, hairs straight.

Heads

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

(sessile, clustered in glomerules) in (densely leafy) paniculiform to spiciform arrays 10–20(–30) × 1–4 cm.

Cypselae

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

ellipsoid (faintly nerved), 1–1.5 mm, glabrous.

Artemisia borealis

Artemisia pycnocephala

Phenology Flowering late spring–mid summer.
Habitat Rocky or sandy soils of coastal beaches
Elevation 0–200 m (0–700 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
CA
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[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. 509.
Parent taxa Asteraceae > tribe Anthemideae > Artemisia > subg. Drancunculus Asteraceae > tribe Anthemideae > Artemisia > subg. Drancunculus
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. 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. borealis subsp. borealis, A. borealis subsp. richardsoniana
Synonyms A. campestris subsp. borealis Oligosporus pycnocephalus, A. campestris subsp. pycnocephala
Name authority Pallas: Reise Russ. Reich. 3: 755. (1776) (Lessing) de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 6: 99. (1838)
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