Flora of North America species comparison

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Artemisia stelleriana

Artemisia globularia

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

purple wormwood
Habit Perennials, (15–)20–60(–70) cm (mat-forming), sometimes faintly aromatic (rhizomes creeping, relatively thin). Perennials, (3–)5–16(–30) cm (cespitose), faintly aromatic (not rhizomatous, taproots stout, caudices simple or branched, proximal branches clothed with persistent leaf bases).
Stems

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

1–5, erect, whitish gray, densely tomentose.
Leaves

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.

mostly basal (cauline 1–4), greenish to whitish green;

blades (basal) 1–4.5 × 0.6–1.5 cm, 1–2-ternately to palmately lobed (flowering-stem blades 3-lobed), faces sparsely hairy.
Involucres

broadly campanulate, 5–8 × 6–7 mm.

campanulate or hemispheric, 3.5–6 × 6–11 mm.
Florets

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).

pistillate 9–10;

bisexual 20–30;

corollas yellow or reddish black, 2–3 mm, sometimes glandular.
Phyllaries

broadly lanceolate, tomentose.

lanceolate (margins brown), pilose.
Heads

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

(2–20, peduncles 0 or to 25 mm) in subcapitate to capitate arrays 2–3 × 2–3 cm.
Cypselae

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

oblong, 1.5–2.5 mm, (apices flattened) glabrous.
2n

= 18.

Artemisia stelleriana

Artemisia globularia
Phenology Flowering early spring–fall.
Habitat Sandy soils, coastal strand
Elevation 0–200 m (0–700 ft)
Distribution
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]
from FNA
AK; YT; Asia
[BONAP county map]
Discussion

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.)

Subspecies 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Corollas reddish black; cypselae ca. 2.5 mm, margins with relatively narrow ribs
subsp. globularia
1. Corollas yellow; cypselae 1.5–2 mm, margins with relatively broad ribs
subsp. lutea
Source FNA vol. 19, p. 532. FNA vol. 19, p. 525.
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. 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
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. 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
Subordinate taxa
A. globularia subsp. globularia, A. globularia subsp. lutea
Synonyms Ajania globularia, A. norvegica subsp. globularia
Name authority Besser: Nouv. Mém. Soc. Imp. Naturalistes Moscou 3: 79, plate 5. (1834) Chamisso ex Besser: Nouv. Mém. Soc. Imp. Naturalistes Moscou 3: 64. (1833)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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