''Artemisia michauxiana'' is a
North American 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 ...
to 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 o ...
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 ho ...
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
De ...
. The inflorescence
An inflorescence is a group or cluster of flowers arranged on a Plant stem, stem that is composed of a main branch or a complicated arrangement of branches. Morphology (biology), Morphologically, it is the modified part of the shoot of sperma ...
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. 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 (botany), whorl of a flower; it consists of (one or m ...
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 w ...
s. The fruit is a tiny hairless achene.[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 Culture
Plants 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
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