Artemisia borealis |
Artemisia pycnocephala |
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boreal wormwood, field sagewort |
beach sagewort, beach wormwood, coastal sagewort, sandhill sage |
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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. |
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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. |
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Involucres | hemispheric, 3–4 × 3.5–4 mm. |
globose, 3–4.5 × 3–4.5 mm. |
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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. |
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Phyllaries | (obscurely scarious) densely tomentose-villous. |
lanceolate, margins obscured by indument, hairs straight. |
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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. |
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Cypselae | oblong-lanceoloid, somewhat compressed, 0.4–1 mm, faintly nerved, glabrous. |
ellipsoid (faintly nerved), 1–1.5 mm, glabrous. |
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Artemisia borealis |
Artemisia pycnocephala |
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Phenology | Flowering late spring–mid summer. | |||||
Habitat | Rocky or sandy soils of coastal beaches | |||||
Elevation | 0–200 m (0–700 ft) | |||||
Distribution |
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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CA
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Discussion | Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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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 | ||||||
Subordinate taxa | ||||||
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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