Artemisia borealis
Artemisia frigida
boreal wormwood, field sagewort
arctic sage, armoise douce, estafiata, fringe sage, fringe sagebrush, pasture sage, prairie sagebrush, prairie sagewort, prairie wormwood
(1–)2–5, gray-green, tomentose.
gray-green or brown, glabrescent.
persistent, basal rosettes persistent, gray-green to white;
blades ovate, 2–4 × 0.5–1 cm, 2–3-pinnately or -ternately lobed, lobes linear to narrowly oblong, apices acute, faces moderately to densely sericeous.
persistent, silver-gray;
blades ovate, 0.5–1.5(–2.5) cm, 1–2-ternately lobed (lobes 0.2–0.5 mm wide), faces densely whitish-pubescent.
hemispheric, 3–4 × 3.5–4 mm.
globose, (3–)5 × (2–)5–6 mm.
pistillate 8–10; functionally staminate 15–30;
corollas (or lobes) yellow-orange or deep red, 2.2–3.5.
pistillate 10–17;
bisexual 20–50;
corollas 1.5–2 mm, glabrous.
(obscurely scarious) densely tomentose-villous.
gray-green (margins sometimes brownish), densely tomentose.
(proximal sessile, distal pedunculate) in (leafy) spiciform arrays 4–9(–12) × (0.5–)1–5 cm.
in (leafy) paniculiform arrays 0.5–2(–4) × 4–15(–20) cm.
oblong-lanceoloid, somewhat compressed, 0.4–1 mm, faintly nerved, glabrous.
1–1.5 mm, glabrous.
= 18.
Artemisia borealis
Artemisia frigida
Subspecies 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Reports of Artemisia frigida from eastern Canada (Ontario eastward), the eastern United States (e.g., Connecticut, Massachusetts, Michigan, Vermont), and Arkansas and Missouri appear to be from old garden sites where the plants may persist. The similarity of this native species to cultivars from eastern Asia (especially Siberia) has led to a number of reports that are apparently based on other cultivars. As a plant with attractive silver foliage, this species has good potential as a drought-hardy plant for flower gardens in cold climates.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Herbage villoso-tomentose, glabrate, or glabrous; corollas (at least lobes) usually yellow-orange, 2.2–3 mm; mountains, w North America | subsp. borealis |
1. Herbage white-hoary; corollas (at least lobes) deep red, 3–3.5 mm; w arctic North America | subsp. richardsoniana |
BC
OR
CalFlora
Flora NW
PNW Herbaria
SW CO Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
WA
IL Wildflowers
KS Wildflowers
MN Wildflowers
