Artemisia franserioides |
Artemisia glomerata |
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bursage mugwort, ragweed sagebrush |
congested sagewort, Pacific alpine wormwood |
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Habit | Biennials or perennials, 30–100 cm, faintly aromatic (rhizomatous). | Perennials, 30–50(–100) cm (densely cespitose), mildly aromatic (not rhizomatous, caudices subterranean, branches clothed with persistent leaf bases). |
Stems | 1–3, erect, reddish brown, simple (leafy), glabrous or glabrate. |
relatively numerous, ascending, brown, simple, hairy. |
Leaves | basal (in rosettes, petiolate) and cauline, bicolor (white and green); blades ovate, 3–7(–20) × 2–4(–6) cm, 2–3-pinnately-lobed (lobes elliptic, 2–6 mm wide; cauline sessile, smaller), faces tomentose (abaxial) or glabrous or glabrescent (adaxial), glandular. |
mostly basal (cauline mostly 2–4, smaller), whitish; blades (basal) flabellate, 0.5–1(–2) × 0.5–0.8(–1.5) cm, relatively deeply lobed (lobes 5–9, linear), faces strigillose. |
Involucres | broadly ovate, 3–5 × 4–5(–6) mm. |
broadly campanulate, 3–4 × 3.5–5 mm. |
Florets | pistillate 4–5(–13), (1–1.5 mm); bisexual 25–35; corollas yellow, 1.5–2 mm, glabrous. |
pistillate 4–5; bisexual 10–15; corollas yellow (3–5-toothed), 2–2.5 mm, glabrous or sparsely pilose. |
Phyllaries | broadly ovate, sparsely hairy. |
lanceolate (margins brownish), densely pilose. |
Heads | (nodding, peduncles 0 or 2) in paniculiform to racemiform arrays 10–35 × 2–4 cm (often 1-sided). |
(3–10, erect or nodding, peduncles 0 or to 15 mm) in subcapitate to corymbiform arrays 1–5 × 2–4 cm. |
Cypselae | elliptic, 0.5–0.8 mm, glabrous. |
ellipsoid (flattened, margins ribbed), 1–1.5 mm, glabrous. |
2n | = 18, 27, 36, 54. |
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Artemisia franserioides |
Artemisia glomerata |
|
Phenology | Flowering late summer–early fall. | Flowering mid summer. |
Habitat | Open coniferous forests, mid to upper montane | Arctic and alpine tundra and sandy slopes |
Elevation | 2200–3100 m (7200–10200 ft) | 0–1000 m (0–3300 ft) |
Distribution |
AZ; CO; NM; Mexico (Chihuahua)
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AK; YT |
Discussion | Artemisia glomerata is similar to A. senjavinensis; it can be distinguished by its more deeply lobed leaves and sparser indument. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 19, p. 525. | FNA vol. 19, p. 526. |
Parent taxa | Asteraceae > tribe Anthemideae > Artemisia > subg. Artemisia | Asteraceae > tribe Anthemideae > Artemisia > subg. Artemisia |
Sibling taxa | ||
Synonyms | Ajania glomerata, A. glomerata var. subglabra, A. norvegica var. glomerata | |
Name authority | Greene: Bull. Torrey Bot. Club 10: 42. (1883) | Ledebour: Mém. Acad. Imp. Sci. St. Pétersbourg Hist. Acad. 5: 564. (1815) |
Web links |