Artemisia franserioides |
Artemisia senjavinensis |
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bursage mugwort, ragweed sagebrush |
arctic wormwood |
|
Habit | Biennials or perennials, 30–100 cm, faintly aromatic (rhizomatous). | Perennials, 30–90 cm (densely cespitose), mildly aromatic (caudices branched, woody, taprooted). |
Stems | 1–3, erect, reddish brown, simple (leafy), glabrous or glabrate. |
1–9, erect, gray-green, lanate. |
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 (in rosettes, cauline 2–5, scattered on flowering stems); blades (basal) broadly oblanceolate, 0.5–0.8 × 0.5–0.7 cm, relatively deeply lobed (lobes 3–5, acute; cauline blades 0.5–1 cm, entire or pinnately lobed, lobes 3–5), faces densely tomentose to sericeous (hairs 1–2 mm). |
Involucres | broadly ovate, 3–5 × 4–5(–6) mm. |
turbinate, 3–4 × 3–5 mm. |
Florets | pistillate 4–5(–13), (1–1.5 mm); bisexual 25–35; corollas yellow, 1.5–2 mm, glabrous. |
pistillate 4–5; bisexual 3–4; corollas yellow or tan, 1.5–2, glandular (style branches blunt, not fringed). |
Phyllaries | broadly ovate, sparsely hairy. |
lanceolate or ovate, hairy. |
Heads | (nodding, peduncles 0 or 2) in paniculiform to racemiform arrays 10–35 × 2–4 cm (often 1-sided). |
in corymbiform arrays 0.5–2.5 × 0.5–2.5 cm (subtended by white-sericeous bracts). |
Cypselae | elliptic, 0.5–0.8 mm, glabrous. |
(brown) linear-oblong, ca. 2 mm, (apices flat), glabrous. |
2n | = 36, 54. |
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Artemisia franserioides |
Artemisia senjavinensis |
|
Phenology | Flowering late summer–early fall. | Flowering mid–late summer. |
Habitat | Open coniferous forests, mid to upper montane | Open calcareous gravelly slopes in tundra or heath, sandy slopes above high tide |
Elevation | 2200–3100 m (7200–10200 ft) | 0–600 m (0–2000 ft) |
Distribution |
AZ; CO; NM; Mexico (Chihuahua)
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AK; e Asia (Russian Far East, Chukotka) |
Discussion | Artemisia senjavinensis is known only from western Alaska (Seward Peninsula) and the Chukchi Peninsula of the Russian Far East. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 19, p. 525. | FNA vol. 19, p. 532. |
Parent taxa | Asteraceae > tribe Anthemideae > Artemisia > subg. Artemisia | Asteraceae > tribe Anthemideae > Artemisia > subg. Artemisia |
Sibling taxa | ||
Synonyms | Ajania senjavinensis, A. androsacea | |
Name authority | Greene: Bull. Torrey Bot. Club 10: 42. (1883) | Besser: Nouv. Mém. Soc. Imp. Naturalistes Moscou 3: 35. (1834) |
Web links |