Artemisia subg. Drancunculus
Artemisia aleutica
Aleutian wormwood
wandlike (new stems may sprout from caudices).
usually 1, reddish brown to gray, tomentose to glabrate.
deciduous (persistent in A. aleutica and A. borealis), usually cauline, sometimes basal, not in fascicles.
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.
hemispheric or globose, (2–)5–7 × (2–)6–8 mm.
epaleate, glabrous.
peripheral 1–25 pistillate and fertile;
central 3–32 functionally staminate (not setting fruits);
corollas subglobose.
pistillate 4–6; functionally staminate 15–30;
corollas purplish red, 1.5–2 mm, hairy.
villous.
disciform.
(sessile or peduncles 2–15 mm) in racemiform or spiciform arrays, 1.5–3 × 0.5–1 cm.
oblong, ca. 1 mm, faintly nerved, glabrous.
Artemisia subg. Drancunculus
Artemisia aleutica
Species ca. 80 (8 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. Plants 5–30(–80+) cm (often cespitose and/or mounded) | → 2 |
1. Plants (10–)50–180 cm (not cespitose) | → 5 |
2. Perennials; leaves 2–3-palmately or -pinnately lobed | → 3 |
2. Perennials or subshrubs; leaves 1–2-pinnately or -ternately lobed | → 4 |
3. Leaves 2-palmately lobed; corollas purplish red; Aleutian Islands | A. aleutica |
3. Leaves 2–3-pinnately or -ternately lobed; corollas (at least lobes) usually yellow- orange or deep red; n latitudes and w mountains | A. borealis |
4. Leaves gray-green, lobes 1–2 mm wide; involucres 3–4 × 3–4 mm; corollas yellow, usually red-tinged, glabrous | A. pedatifida |
4. Leaves silver-green, lobes mostly 2–3 mm wide; involucres 4–5(–7) × 2–3 mm wide; corollas pale yellow, glandular | A. porteri |
5. Plants tarragon-scented or not aromatic; leaves mostly entire, sometimes (basal) irregularly lobed, faces usually glabrous, sometimes glabrescent (deserts) | A. dracunculus |
5. Plants faintly to strongly aromatic (not tarragon-scented); leaves lobed, faces hairy | → 6 |
6. Shrubs, 60–180 cm (rounded, stems wandlike); involucres 1.5–2 mm diam | A. filifolia |
6. Biennials or perennials, (10–)30–80(–150) cm; involucres 2–4.5(–7) mm diam | → 7 |
7. Stems usually 1–5; heads in (mostly leafless) paniculiform arrays | A. campestris |
7. Stems usually 10+; heads (clustered in glomerules) in (densely leafy) paniculiform to spiciform arrays | A. pycnocephala |
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