View source for Artemisia ludoviciana

{{Treatment/ID
|accepted_name=Artemisia ludoviciana
|accepted_authority=Nuttall
|publications={{Treatment/Publication
|title=Gen. N. Amer. Pl.
|place=2: 143. 1818
|year=1818
}}
|common_names=Silver wormwood;white or silver sage
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Artemisia vulgaris var. ludoviciana
|authority=(Nuttall) Kuntze
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Anthemideae;Artemisia;Artemisia subg. Artemisia;Artemisia ludoviciana
|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. Artemisia]]</div><div class="higher-taxon"><small>species</small>[[Artemisia ludoviciana]]</div></div>
|volume=Volume 19
|mention_page=page 522, 524, 530, 532
|treatment_page=page 527
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 20–80 (rarely to 120 in desert washes) cm, aromatic (rhizomatous). <b>Stems</b> relatively few to relatively numerous, erect, gray-green, simple or widely branched, hairy. <b>Leaves</b> cauline, uniformly gray-green, green, or white, or bicolor (white and green); blades linear to broadly elliptic, 1.5–11 × 0.5–4 cm, entire or lobed to relatively deeply pinnatifid, faces hairy. <b>Heads</b> (erect to nodding, peduncles 0 or 2–5 mm) in congested to open (widely branched) arrays. <b>Involucres</b> campanulate or turbinate, (1–)2–4(–5) × 2–5(–8) mm. <b>Phyllaries</b> (gray-green), lanceolate to ovate or obovate (margins narrowly hyaline), densely tomentose. <b>Florets</b>: pistillate 5–12; bisexual 6–45; corollas yellow, sometimes red-tinged, 1.5–2.8 mm, glabrous. <b>Cypselae</b> ellipsoid ca. 0.5 mm, (obscurely nerved) glabrous. <b>2n</b> = 18, 36, 54.</span><!--

-->{{Treatment/Body
|distribution=North America;Mexico.
|discussion=<p>Subspecies ca. 7 (6 in the flora).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaves usually relatively deeply lobed (1/3+ widths, nearly to midrib, proximal leaves sometimes entire); involucres 3–8 mm diam.; mountain meadows and slopes
|[[#key-0-2| > 2]]
|-id=key-0-1
|1
|Leaves entire or relatively shallowly lobed (lobes to 1/3 widths); involucres 2–3(–4) mm diam.; desert valleys and mountains
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Involucres 4–5 × 4–8 mm
|[[Artemisia ludoviciana subsp. candicans|Artemisia ludoviciana subsp. candicans]]
|-id=key-0-2
|2
|Involucres 3–4 × 3–5 mm
|[[Artemisia ludoviciana subsp. incompta|Artemisia ludoviciana subsp. incompta]]
|-id=key-0-3
|3
|Heads in paniculiform arrays (4–)8–30 cm diam.; leaves mostly 1.5–2 cm
|[[Artemisia ludoviciana subsp. albula|Artemisia ludoviciana subsp. albula]]
|-id=key-0-3
|3
|Heads in paniculiform or racemiform arrays 1–6 cm diam.; leaves 1.5–11 cm
|[[#key-0-4| > 4]]
|-id=key-0-4
|4
|Leaf margins plane
|[[Artemisia ludoviciana subsp. ludoviciana|Artemisia ludoviciana subsp. ludoviciana]]
|-id=key-0-4
|4
|Leaf margins revolute
|[[#key-0-5| > 5]]
|-id=key-0-5
|5
|Leaves bicolor (gray-green and bright green), margins mostly entire, abaxial faces glabrous
|[[Artemisia ludoviciana subsp. redolens|Artemisia ludoviciana subsp. redolens]]
|-id=key-0-5
|5
|Leaves gray-green, margins usually lobed, abaxial faces hairy
|[[Artemisia ludoviciana subsp. mexicana|Artemisia ludoviciana subsp. mexicana]]
|}
</div></div><!--

-->{{#Taxon:
name=Artemisia ludoviciana
|authority=Nuttall
|rank=species
|parent rank=subgenus
|synonyms=Artemisia vulgaris var. ludoviciana
|basionyms=
|family=Asteraceae
|distribution=North America;Mexico.
|reference=None
|publication title=Gen. N. Amer. Pl.
|publication year=1818
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V19_908.xml
|tribe=Asteraceae tribe Anthemideae
|genus=Artemisia
|subgenus=Artemisia subg. Artemisia
|species=Artemisia ludoviciana
}}<!--

-->[[Category:Treatment]][[Category:Artemisia subg. Artemisia]]