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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.

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
from FNA
AZ; CO; NM; Mexico (Chihuahua)
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; e Asia (Russian Far East, Chukotka)
[BONAP county map]
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.)

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
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. 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. pycnocephala, A. pygmaea, A. rigida, A. rothrockii, A. rupestris, A. scopulorum, A. serrata, A. spiciformis, A. stelleriana, A. suksdorfii, A. tilesii, A. tridentata, A. tripartita, A. vulgaris
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)
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