Artemisia michauxiana is a species of wormwood known by the common names Michaux's wormwood and lemon sagewort. It is native to western North America from Yukon to California to Colorado, where it grows in mountain talus habitats in subalpine to alpine climates. This is a rhizomatous perennial herb with green, lemon-scented foliage. The plant grows up to a meter tall with several erect branches. The leaves are divided into many narrow segments which are hairless or lightly hairy and bear yellowish resin glands. The flower cluster is a spike up to 15 centimeters long full of clusters of small flower heads. Each head is lined with rough purplish green, hairy phyllaries and generally contains pale pistillate and disc florets. The fruit is a tiny hairless achene.