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Artemisia borealis
Artemisia borealis
Pall.
Family:
Asteraceae
Boreal Wormwood
FNA
Resources
Leila M. Shultz in Flora of North America (vol. 19, 20 and 21)
Perennials,
(6-)8-20(-40) cm (cespitose), 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 mm, faintly nerved, glabrous.
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