''Artemisia michauxiana'' is a

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the C ...

n species of wormwood in the sunflower family. It is known by the common names Michaux's wormwood and lemon sagewort. It is native to the western United States and Canada.Biota of North America Program 2014 state-level distribution map
/ref> It grows in mountain talus habitats in

subalpine Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial f ...

alpine climate Alpine climate is the typical weather (climate) for elevations above the tree line, where trees fail to grow due to cold. This climate is also referred to as a mountain climate or highland climate. Definition There are multiple definitions of ...

s. ''Artemisia michauxiana'' is a

rhizomatous In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hor ...

perennial herb with green, lemon-scented foliage. The plant grows up to 100 cm (40 inches) tall with several erect branches. The leaves are divided into many narrow segments which are hairless or lightly hairy and bear yellowish resin

glands In animals, a gland is a group of cells in an animal's body that synthesizes substances (such as hormones) for release into the bloodstream (endocrine gland) or into cavities inside the body or its outer surface (exocrine gland). Structure D ...

. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on ...

is a

spike Spike, spikes, or spiking may refer to: Arts, entertainment, and media Books * ''The Spike'' (novel), a novel by Arnaud de Borchgrave * ''The Spike'' (book), a nonfiction book by Damien Broderick * ''The Spike'', a starship in Peter F. Hamilto ...

up to 15 centimeters long full of clusters of small

flower heads A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...

. Each head is lined with rough purplish green, glandular

phyllaries In botanical terminology, a phyllary, also known an involucral bract or tegule, is a single bract of the involucre of a composite flower. The involucre is the grouping of bracts together. Phyllaries are reduced leaf-like structures that form one o ...

and generally contains pale

pistillate Gynoecium (; ) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds. The gynoecium is the innermost whorl of a flower; it consists of (one or more) ''pistils' ...

and

disc floret The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae ...

s. The fruit is a tiny hairless

achene An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not ope ...

.Flora of North America Vol. 19, 20 and 21 Page 530, Lemon sagewort, ''Artemisia michauxiana'' Besser in W. J. Hooker, Fl. Bor.-Amer. 1: 324. 1833.
/ref>

References

External links

Calflora Database: ''Artemisia michauxiana'' (Lemon sagewort, Michally sagewort)Jepson Manual eFlora (TJM2) treatment of ''Artemisia michauxiana''University of Washington, Burke Museum of Natural History and CulturePlants for a Future Turner Photographics, Wildflowers of the Pacific Northwest
*[http://science.halleyhosting.com/nature/gorge/sun/button/art/michauxiana.htm Paul Slichter, Sageworts, Mugworts and Wormwoods: The Genus Artemisia in the Columbia River Gorge of Oregon and Washington, Lemon Sagewort, Michaux Mugwort ''Artemisia michauxiana''] Artemisia (genus), michauxiana Flora of the Northwestern United States Flora of Western Canada Flora of California Flora of Nevada Flora of Utah Flora of the Great Basin Plants described in 1833 Taxa named by Wilibald Swibert Joseph Gottlieb von Besser Flora without expected TNC conservation status {{asteroideae-stub