View source for Isatis tinctoria

{{Treatment/ID
|accepted_name=Isatis tinctoria
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 670. 1753
|year=1753
}}
|common_names=Dyers woad
|basionyms=
|synonyms=
|hierarchy=Brassicaceae;Brassicaceae tribe Isatideae;Isatis;Isatis tinctoria
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Isatideae]]</div><div class="higher-taxon"><small>genus</small>[[Isatis]]</div><div class="higher-taxon"><small>species</small>[[Isatis tinctoria]]</div></div>
|volume=Volume 7
|mention_page=page 193
|treatment_page=page 568
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>glaucous, usually glabrous, sometimes pubescent proximally. <b>Stems</b> (3–)4–10(–15) dm. <b>Basal</b> leaves: petiole 0.5–5.5 cm; blade oblong or oblanceolate, (2.5–)5–15(–20) cm × (5–)15–35(–50) mm, base attenuate, margins entire, repand, or dentate, apex obtuse. <b>Cauline</b> leaves: blade usually oblong or lanceolate, rarely linear-oblong, base sagittate or auriculate, apex acute. <b>Fruiting</b> pedicels 5–10 mm. <b>Flowers</b>: sepals 1.5–2.8 × 1–1.5 mm, glabrous; petals 2.5–4 × 0.9–1.5 mm, base attenuate; filaments 1–2.5 mm; anthers 0.5–0.7 mm. <b>Fruits</b> black or dark brown, often broader distal to middle, (0.9–)1.1–2(–2.7) cm × 3–6(–10) mm, base cuneate, margins sometimes slightly constricted, apex usually subacute or rounded, rarely subemarginate; locule with distinct midvein, lateral veins inconspicuous, 3–6(–10) mm; apical wing 3.5–5(–7) mm wide. <b>Seeds</b> light brown, 2.3–3.5(–4.5) × 0.8–1 mm. <b>2n</b> = 14, 28.</span><!--

-->{{Treatment/Body
|phenology=Flowering Apr–Jun.
|habitat=Roadsides, fields, pastures, sagebrush hillsides, prairies, railroad embankments, waste places
|elevation=300-2200 m
|distribution=B.C.;Nfld. and Labr. (Nfld.);Ont.;Que.;Calif.;Idaho;Ill.;Mo.;Mont.;Nev.;N.Mex.;N.Y.;Oreg.;Utah;Va.;Wash.;W.Va.;Wyo.;Europe;c;sw Asia;n Africa;introduced also in South America (Chile;Peru).
|discussion=<p><i>Isatis tinctoria</i> has been cultivated since ancient times as a source of a blue dye (woad) obtained by fermenting the ground leaves and proximal portions of the plant.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Isatis tinctoria
|author=
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Brassicaceae
|phenology=Flowering Apr–Jun.
|habitat=Roadsides, fields, pastures, sagebrush hillsides, prairies, railroad embankments, waste places
|elevation=300-2200 m
|distribution=B.C.;Nfld. and Labr. (Nfld.);Ont.;Que.;Calif.;Idaho;Ill.;Mo.;Mont.;Nev.;N.Mex.;N.Y.;Oreg.;Utah;Va.;Wash.;W.Va.;Wyo.;Europe;c;sw Asia;n Africa;introduced also in South America (Chile;Peru).
|introduced=true
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V7/V7_918.xml
|tribe=Brassicaceae tribe Isatideae
|genus=Isatis
|species=Isatis tinctoria
}}<!--

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