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Isatis tinctoria L.
WOAD
Dyers woad

Life   Plantae   Dicotyledoneae   Brassicaceae   Isatis

Isatis tinctoria, seed
© Copyright Seeds USID 2015 · 1
Isatis tinctoria, seed

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Isatis tinctoria, seed
© Copyright Seeds USID 2015 · 1
Isatis tinctoria, seed
Isatis tinctoria, seed
© Copyright Seeds USID 2015 · 1
Isatis tinctoria, seed

Associates · map
FamilyScientific name @ source (records)
Andrenidae  Andrena prunorum @ BBSL (8)

Andrena vierecki @ BBSL (1)

Andrena ziziaeformis @ BBSL (1)
Aphididae  Lipaphis erysimi @ CSCA_TCN (4)
Apidae  Apis mellifera @ BBSL (3)

Ceratina nanula @ BBSL (1)

Nomada opacella @ BBSL (2)
Coccinellidae  Coccinella transversoguttata @ I_LB (1)
Halictidae  Halictus confusus @ BBSL (3)

Halictus farinosus @ BBSL (1)

Halictus ligatus @ BBSL (1)

Halictus rubicundus @ BBSL (1)

Halictus tripartitus @ BBSL (17)

Lasioglossum sisymbrii @ BBSL (1)
Megachilidae  Osmia brevis @ BBSL (1)
Mycosphaerellaceae  Septoria isatidis @ BPI (1)

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Following modified from Plants Database, United States Department of Agriculture
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http://plants.usda.gov/java/profile?symbol=ISTI ---> https://plants.usda.gov/java/profile?symbol=ISTI
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Following modified from Flora of North America
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Link to Flora of North America home
 
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FNA Vol. 7 Page 193, 566 , 568 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Brassicaceae | Isatis

1. Isatis tinctoria Linnaeus, Sp. Pl. 2: 670. 1753.

Dyers woad

Plants glaucous, usually glabrous, sometimes pubescent proximally. Stems (3-)4-10 (-15) dm. Basal 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. Cauline leaves : blade usually oblong or lanceolate, rarely linear-oblong, base sagittate or auriculate, apex acute. Fruiting pedicels 5-10 mm. Flowers: 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. Fruits 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. Seeds light brown, 2.3-3.5(-4.5) × 0.8-1 mm. 2 n = 14, 28.

Flowering Apr-Jun. Roadsides, fields, pastures, sagebrush hillsides, prairies, railroad embankments, waste places; 300-2200 m; introduced; 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).

Isatis tinctoria 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.

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Isatis+tinctoria&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Isatis+tinctoria&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
&pull 20q v4.662 20091102: Error 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not installed) https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Isatis+tinctoria&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant

Updated: 2017-12-14 21:52:27 gmt
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