View source for Artemisia tridentata subsp. vaseyana

{{Treatment/ID
|accepted_name=Artemisia tridentata subsp. vaseyana
|accepted_authority=(Rydberg) Beetle
|publications={{Treatment/Publication
|title=Rhodora
|place=61: 83. 1959
|year=1959
}}
|common_names=Mountain sagebrush
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Artemisia vaseyana
|authority=Rydberg
|rank=species
|publication_title=in N. L. Britton et al., N. Amer. Fl.
|publication_place=34: 283. 1916
}}
|synonyms={{Treatment/ID/Synonym
|name=Artemisia tridentata var. pauciflora
|authority=Winward & Goodrich
|rank=variety
}} {{Treatment/ID/Synonym
|name=Artemisia tridentata var. vaseyana
|authority=(Rydberg) B. Boivin
|rank=variety
}} {{Treatment/ID/Synonym
|name=Seriphidium vaseyanum
|authority=
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Anthemideae;Artemisia;Artemisia subg. Tridentatae;Artemisia tridentata;Artemisia tridentata subsp. vaseyana
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Anthemideae]]</div><div class="higher-taxon"><small>genus</small>[[Artemisia]]</div><div class="higher-taxon"><small>subgenus</small>[[Artemisia subg. Tridentatae]]</div><div class="higher-taxon"><small>species</small>[[Artemisia tridentata]]</div><div class="higher-taxon"><small>subspecies</small>[[Artemisia tridentata subsp. vaseyana]]</div></div>
|volume=Volume 19
|mention_page=page 515, 516
|treatment_page=page 517
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> 60–80(–150) cm (plants highly aromatic, crowns flat-topped). <b>Vegetative</b> branches of nearly equal lengths. <b>Leaves</b> (vegetative branches) broadly cuneate, 1.2–3.5 × 0.3–0.7 cm, regularly 3-lobed to irregularly toothed. <b>Heads</b> in paniculiform arrays 10–15 × 2–4 cm. <b>Involucres</b> 2–3 × 1.5–3 mm. <b>Florets</b> 3–9. <b>Cypselae</b> glabrous. <b>2n</b> = 18, 36.</span><!--

-->{{Treatment/Body
|phenology=Flowering mid summer–late fall.
|habitat=Montane meadows, usually in rocky soils, sometimes in forested areas
|elevation=2000–2800 m
|distribution=B.C.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Dak.;Oreg.;S.Dak.;Utah;Wash.;Wyo.
|discussion=<p>Subspecies vaseyana is the common sagebrush of mountain slopes and is the most abundant of all the subspecies of <i>Artemisia tridentata</i>. A. A. Beetle (1960) estimated that it dominates an area of approximately 260,000 square kilometers. That estimate remains reasonably accurate today even though sagebrush is often cleared (by burning, herbicide spray, or the practice of ‘chaining’) and replaced by grasses (especially crested wheatgrass) suitable for livestock grazing. The acreage in which sagebrush has been removed appears to be more than compensated by acreage where it has increased in abundance because of overgrazing. While there may be evidence of introgression with other subspecies of <i>A. tridentata</i>, the <i></i>subsp.<i> vaseyana</i> is usually well-separated geographically and ecologically from the other three subspecies. Variation within <i></i>subsp.<i> vaseyana</i> may warrant the recognition of two varieties. A few-flowered (6 or fewer florets) form occurs at lower elevations (usually less than 2300 m) than the more robust form (with more than 6 florets per head), occurring at higher elevations (generally more than 2300 m). The type specimen of A. vaseyana is the large-headed variant. Pending further study, I am including <i></i>var.<i> pauciflora</i> Winward & McArthur as part of <i></i>subsp.<i> vaseyana</i>. In areas where populations of <i></i>subsp.<i> vaseyana</i> co-occur with subspecies of <i>A. cana</i>, introgression is common.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Artemisia tridentata subsp. vaseyana
|authority=(Rydberg) Beetle
|rank=subspecies
|parent rank=species
|synonyms=Artemisia tridentata var. pauciflora;Artemisia tridentata var. vaseyana;Seriphidium vaseyanum
|basionyms=Artemisia vaseyana
|family=Asteraceae
|phenology=Flowering mid summer–late fall.
|habitat=Montane meadows, usually in rocky soils, sometimes in forested areas
|elevation=2000–2800 m
|distribution=B.C.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Dak.;Oreg.;S.Dak.;Utah;Wash.;Wyo.
|reference=None
|publication title=Rhodora
|publication year=1959
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V19_879.xml
|tribe=Asteraceae tribe Anthemideae
|genus=Artemisia
|subgenus=Artemisia subg. Tridentatae
|species=Artemisia tridentata
|subspecies=Artemisia tridentata subsp. vaseyana
}}<!--

-->[[Category:Treatment]][[Category:Artemisia tridentata]]