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fork wormwood, three-fork mugwort, three-fork wormwood

armoise de Steller, beach wormwood, dusty miller, oldwoman, Steller's wormwood

Habit Perennials, 7–35 cm (not cespitose), faintly aromatic (not rhizomatous, taproots stout, caudices simple or branched, branches clothed with persistent leaf bases). Perennials, (15–)20–60(–70) cm (mat-forming), sometimes faintly aromatic (rhizomes creeping, relatively thin).
Stems

(flowering) 1–5, erect, light brown, simple, strigillose or glabrate.

1–3, erect or ascending, white, simple (stout), densely tomentose to floccose.

Leaves

basal (in rosettes) and cauline, gray-green;

blades oval, 2–10(–12) cm (basal) or 1–1.5 × 0.4–0.6 cm (cauline), 1–3-palmately lobed, faces sparsely to densely strigillose.

basal and cauline (petiolate), silver-gray;

blades oblanceolate, (proximalmost) 3–10 × 1–5 cm, pinnatifid (lobes relatively broad, rounded; distal leaves, on flowering stems, smaller), faces densely tomentose.

Involucres

broadly campanulate, 3–6 × 4.5–8 mm.

broadly campanulate, 5–8 × 6–7 mm.

Florets

pistillate 6–7;

bisexual 15–26;

corollas mostly yellow, sometimes red-tinged, 1–2 mm, glabrous or glabrate.

pistillate 12–16;

bisexual 25–30;

corollas yellow (narrow or tubular), 3.2–4 mm (unusually large), glabrous or sparsely hairy (style branches prominent, erect, blunt).

Phyllaries

(greenish, color often obscured by indument) ovate or lanceolate (margins dark brown), sparsely to densely tomentose.

broadly lanceolate, tomentose.

Heads

(erect or spreading, some nodding, peduncles 0 or to 30 mm) in racemiform or spiciform arrays 1–6 × 1–2 cm.

(erect or spreading, peduncles 0 or to 3 mm) in dense, paniculiform, racemiform, or spiciform arrays 8–20 × 2–4 cm.

Cypselae

oblong (ribbed), 1–1.5 mm, glabrous.

(dark brown) narrowly oblong-linear (slightly flattened, smooth), 3–4 mm, glabrous.

2n

= 18, 36, 72, 90.

= 18.

Artemisia furcata

Artemisia stelleriana

Phenology Flowering late summer. Flowering early spring–fall.
Habitat Talus slopes or tundra Sandy soils, coastal strand
Elevation 500–2700 m (1600–8900 ft) 0–200 m (0–700 ft)
Distribution
from FNA
AK; WA; AB; BC; NT; NU; YT; Asia
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; CT; DE; FL; LA; MA; MD; ME; MI; MN; NC; NH; NJ; NY; OH; PA; RI; VA; VT; WA; WI; WV; NB; NF; NS; ON; PE; QC; SPM; n Europe; e Asia (Japan, Kamchatka)
[WildflowerSearch map]
[BONAP county map]
Discussion

Artemisia furcata extends from the islands of the Bering Sea into southern and interior Alaska, parts of Canada (disjunct in British Columbia and the northernmost Rocky Mountains of Alberta), and on Mt. Rainier in Washington. The array of names applied to A. furcata shows the taxonomic confusion arising from a myriad of morphologic variants that may indicate introgression with other species.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Artemisia stelleriana is apparently native along the western tip of the Aleutian islands (D. F. Murray, pers. comm.). It is an attractive ornamental and, in parts of its range in the flora area, it appears to have escaped from cultivation and is naturalized in beach dunes and other sandy habitats.

(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. franserioides, A. frigida, 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. senjavinensis, A. serrata, A. spiciformis, A. suksdorfii, A. tilesii, A. tridentata, A. tripartita, A. vulgaris
Synonyms A. furcata var. heterophylla, A. hyperborea, A. tacomensis, A. trifurcata
Name authority M. Bieberstein: Fl. Taur.-Caucas. 3: 567. (1819) Besser: Nouv. Mém. Soc. Imp. Naturalistes Moscou 3: 79, plate 5. (1834)
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