1	Plants 5–30(–80+) cm (often cespitose and/or mounded)		(2)
+	Plants (10–)50–180 cm (not cespitose)		(5)
2 (1)	Perennials; leaves 2–3-palmately or -pinnately lobed		(3)
+	Perennials or subshrubs; leaves 1–2-pinnately or -ternately lobed		(4)
3 (2)	Leaves 2-palmately lobed; corollas purplish red; Aleutian Islands		1 Artemisia aleutica
+	Leaves 2–3-pinnately or -ternately lobed; corollas (at least lobes) usually yellow- orange or deep red; n latitudes and w mountains		2 Artemisia borealis
4 (2)	Leaves gray-green, lobes 1–2 mm wide; involucres 3–4 × 3–4 mm; corollas yellow, usually red-tinged, glabrous		6 Artemisia pedatifida
+	Leaves silver-green, lobes mostly 2–3 mm wide; involucres 4–5(–7) × 2–3 mm wide; corollas pale yellow, glandular		7 Artemisia porteri
5 (1)	Plants tarragon-scented or not aromatic; leaves mostly entire, sometimes (basal) irregularly lobed, faces usually glabrous, sometimes glabrescent (deserts)		4 Artemisia dracunculus
+	Plants faintly to strongly aromatic (not tarragon-scented); leaves lobed, faces hairy		(6)
6 (5)	Shrubs, 60–180 cm (rounded, stems wandlike); involucres 1.5–2 mm diam		5 Artemisia filifolia
+	Biennials or perennials, (10–)30–80(–150) cm; involucres 2–4.5(–7) mm diam		(7)
7 (6)	Stems usually 1–5; heads in (mostly leafless) paniculiform arrays		3 Artemisia campestris
+	Stems usually 10+; heads (clustered in glomerules) in (densely leafy) paniculiform to spiciform arrays		8 Artemisia pycnocephala