Artemisia pontica |
Artemisia scopulorum |
|
---|---|---|
armoise de la mer noire, green-ginger, roman wormwood |
alpine sagebrush, dwarf sagebrush |
|
Habit | Perennials, 40–100 cm, somewhat aromatic; rhizomes creeping, woody. | Perennials, 10–25 cm (cespitose), mildly aromatic (caudices relatively slender). |
Stems | relatively numerous, erect, brown, mostly simple (brittle, bases woody) canescent or glabrate. |
gray-green, glabrate. |
Leaves | cauline, grayish green; sessile (proximalmost short-petiolate); blades triangular to ovate, 1–5 × 1–3 cm, 2–3-pinnatifid (lobes 0.5–1 mm wide, acute), faces pubescent (abaxial) or hairy to glabrate (adaxial). |
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 | spheric, 1.5–2(–3) mm. |
broadly globose or subglobose, 4 × 4–7 mm. |
Florets | pistillate 10–12; bisexual 40–45; corollas pale yellow, 0.2–0.3 mm, sometimes gland-dotted (stigma lobes relatively short, not emerging from tubes, short-ciliate). |
pistillate 6–13; bisexual 15–30; corollas 1.5–2.5 mm, hairy (at least on lobes). |
Phyllaries | (subequal) linear, hairy. |
green (margins black or dark brown), densely villous. |
Heads | (nodding) in paniculiform arrays 10–22 × 2–4 cm. |
(5–22) in spiciform arrays 5–9 × 1–1.5 cm. |
Cypselae | ellipsoid (angled), 0.1–0.2 mm, glabrous. |
0.8–1 mm, glabrous. |
2n | = 18. |
= 18. |
Artemisia pontica |
Artemisia scopulorum |
|
Phenology | Flowering late summer–fall. | Flowering mid–late summer. |
Habitat | Disturbed areas, valleys, shaded thickets | Alpine meadows, protected areas, bases of rocks |
Elevation | 100–500 m (300–1600 ft) | 3100–4200 m (10200–13800 ft) |
Distribution |
CT; DE; IL; KY; MA; MD; ME; MI; MN; NH; NJ; NY; OH; PA; RI; VT; WI; MB; NS; ON; QC; Eurasia [Introduced in North America] |
CO; MT; NM; NV; UT; WY
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Discussion | Artemisia pontica has finely dissected gray foliage and is widely planted as an ornamental. It escapes locally; it has not been reported as problematic. The only species with which it has been confused in North America is A. abrotanum, which has dark green (not gray) foliage. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 19, p. 531. | FNA vol. 19, p. 520. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Linnaeus: Sp. Pl. 2: 847. (1753) | A. Gray: Proc. Acad. Nat. Sci. Philadelphia 15: 66. (1863) |
Web links |