Artemisia campestris subsp. borealis

Artemisia campestris subsp. borealis
Conservation status
Secure  (NatureServe)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Artemisia
Species:	A. campestris
Subspecies:	A. c. subsp. borealis
Trinomial name
Artemisia campestris subsp. borealis (Pall.) H.M.Hall & Clem.
Synonyms
Synonymy Absinthium boreale (Pall.) Besser Artemisia allionii Nyman Artemisia ambigua Thunb. Artemisia bocconei All. Artemisia borealis Pall. Artemisia borealis f. adamsii (Besser) J.Rousseau Artemisia borealis var. adamsii Besser Artemisia borealis var. alluvialis Korobkov Artemisia borealis var. ammophila Korobkov Artemisia borealis var. besseri Torr. & A.Gray Artemisia borealis var. canadensis Bush Artemisia borealis var. latiloba Vacc. Artemisia borealis f. latisecta (Fernald) J.Rousseau Artemisia borealis var. latisecta Fernald Artemisia borealis var. ledebourii Besser Artemisia borealis subsp. mertensii (Besser ex Poljakov) V.P.Ameljczenko Artemisia borealis var. mertensii Besser Artemisia borealis subsp. nana (Gaudin) E.P.Perrier Artemisia borealis f. purshii (Besser ex Hook) J.Rousseau Artemisia borealis subsp. purshii (Besser ex Hook) Hultén Artemisia borealis var. purshii Besser Artemisia borealis var. spithamaea (Pursh) Torr. & A.Gray Artemisia borealis f. typica J.Rousseau Artemisia borealis subsp. wormskioldii (Besser) Piper Artemisia borealis var. wormskioldii Besser Artemisia borealis f. wormskioldii (Besser) Artemisia campestris var. borealis (Pall.) M.Peck Artemisia campestris var. purshii (Besser) Cronquist Artemisia campestris subsp. spithamaea (Pursh) H.M.Hall & Clem Artemisia campestris var. spithamaea (Pursh) M.Peck Artemisia campestris var. wormskioldii (Besser ex Hook) Cronquist Artemisia camtschatica Schltdl. ex Ledeb. Artemisia canadensis f. peucedanifolia (Juss. ex Besser) Vict. & J.Rousseau Artemisia gelida Ledeb. Artemisia helvetica Schleich. Artemisia nana Gaudin Artemisia nana var. parviflora Gaudin Artemisia norica Leyb. Artemisia pallasii Willd. ex Spreng. Artemisia peucedanifolia Juss. ex Besser Artemisia purshiana Besser Artemisia ripicola Rydb. Artemisia spithamaea Pursh Artemisia stelleri Steven ex Ledeb. Artemisia vermiculata Schangin ex DC. Artemisia violacea Ledeb. Draconia campestris subsp. borealis (Pall.) Soják Oligosporus borealis (Pall.) Poljakov Oligosporus nanus (Gaudin) Poljakov Oligosporus peucedanifolius (Juss. ex Besser) Poljakov

Artemisia campestris subsp. borealis is an arctic and alpine subspecies of plant in the sunflower family, commonly known as northern wormwood, boreal sage, boreal wormwood or boreal sagewort.^[2] It is native to high latitudes and high elevations in Eurasia and North America. In North America, it can be found in Alaska, Greenland, the Canadian Arctic, and the Rockies, Cascades, and Sierra Nevada as far south as Arizona and New Mexico.^[3][4] In Eurasia, it is widespread across European and Asiatic Russia^[5] and also grows in Scandinavia and in the mountains of central Europe (Carpathians, Alps, etc.)^[6][7][8]

Perennials, (6–)8–20(–40) cm (caespitose), mildly aromatic; taprooted, caudices branched. Stems (1–)2–5, gray-green, tomentose. Leaves 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. Heads (proximal sessile, distal pedunculate) in (leafy) spiciform arrays 4–9(–12) × (0.5–)1–5 cm. Involucres hemispheric, 3–4 × 3.5–4 mm. Phyllaries (obscurely scarious) densely tomentose-villous. Florets: pistillate 8–10; functionally staminate 15–30; corollas (or lobes) yellow-orange or deep red, 2.2–3.5. Cypselae oblong-lanceoloid, somewhat compressed, 0.4–1 millimetre (0.016–0.039 in), faintly nerved, glabrous.^[3]