Artemisia laciniata
Artemisia aleutica
Siberian wormwood
Aleutian wormwood
1–3, erect, reddish brown, simple, strigillose to spreading-hairy, or glabrous.
usually 1, reddish brown to gray, tomentose to glabrate.
basal (in rosettes, petioles to 12 cm) and cauline, greenish;
blades (basal) 2–3-pinnate, relatively deeply lobed (cauline sessile, 1–2-pinnately lobed to entire), faces sparsely hairy to pilose.
persistent, mostly basal, gray-green; (petioles often expanded) blades (at least proximal) obovate, 1.5–5 × 0.5–1 cm, 2-palmately lobed, lobes relatively narrow, apices acute, faces densely white-villous (brownish in age);
cauline smaller, distally 1-ternate.
globose, 3–5 × 4–8 mm.
hemispheric or globose, (2–)5–7 × (2–)6–8 mm.
pistillate 6–8;
bisexual 20–50;
corollas yellowish or yellow to reddish-tinged, 1–2 mm, hairy (hairs tangled).
pistillate 4–6; functionally staminate 15–30;
corollas purplish red, 1.5–2 mm, hairy.
(greenish or yellowish) elliptic (margins hyaline, brownish), glabrous or sparsely hairy.
villous.
(10–70, spreading to nodding, peduncles 0 or to 10 mm) in spiciform arrays 2–5 × 0.5–1 or 8–18 × 1–4 cm.
(sessile or peduncles 2–15 mm) in racemiform or spiciform arrays, 1.5–3 × 0.5–1 cm.
oblong, 0.5–1 mm, glabrous.
oblong, ca. 1 mm, faintly nerved, glabrous.
Artemisia laciniata
Artemisia aleutica
Subspecies 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Artemisia aleutica is known only from the western Aleutian Islands. It is morphologically similar to A. borealis, and the relationships of these species complexes warrant further study.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Stems hairy; leaves mostly cauline, blades 5–20 × 1–2 cm, sparsely hairy; arrays of heads 8–18 × 1–4 cm; corollas yellowish, 1–1.5 mm | subsp. laciniata |
1. Stems glabrous; leaves mostly basal, blades of proximalmost 4–8 × 0.5–1 cm, of cauline 1.5–0.8 × 0.2 cm, sericeous; arrays of heads 2–5 × 0.5–1 cm; corollas yellow or reddish-tinged, 1.5–2 mm | subsp. parryi |
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USDA Plants Database
