Difference between revisions of "Isatis"

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Isatis (ancient name, of obscure meaning). Cruciferae. 'Herbs, for ornament and for dyeing.
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Annual, biennial, perennial; erect, branching, glabrous or pubescent or rarely tomentose: lvs. undivided, the upper ones clasping and auricled: fls. small, yellow, many in lax racemes, without bracts; sepals and petals 4: pod large and mostly flat, pendulous, linear to oblong or obovate or even nearly circular, indehiscent, strong-ribbed on either side, 1-seeded, the stigma sessile; radicle mostly incumbent.—Species about 50, Eu., N. Afr.. Asia.
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This genus includes the dyer's woad, I. tinctoria formerly cultivated for a blue dye but no longer advertised. Caesar relates that the ancient Britons used the wood for staining their bodies, and the word Britain itself comes from an old Celtic word meaning painted. Before indigo became common in Europe, the dyer's woad produced the chief blue coloring matter for woolen cloth. The introduction of indigo in the seventeenth century destroyed this important industry, not without
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opposition. Dioscorides and Pliny mention both the dyer's woad and indigo.
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I. boissieridna Reichb. Annual, 12 in.: basal lvs. cuncate- oblong, toothed; upper lvs. entire, oblong: fls. yellow: pod pubescent, various. Turkestan. L. H.B.
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Isatis is the ancient name of Yazd , a city in Iran.{{Taxobox
 
Isatis is the ancient name of Yazd , a city in Iran.{{Taxobox
 
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Revision as of 04:45, 29 March 2010


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Plant Characteristics
Cultivation
Scientific Names

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Read about Isatis in the Standard Cyclopedia of Horticulture 

Isatis (ancient name, of obscure meaning). Cruciferae. 'Herbs, for ornament and for dyeing.

Annual, biennial, perennial; erect, branching, glabrous or pubescent or rarely tomentose: lvs. undivided, the upper ones clasping and auricled: fls. small, yellow, many in lax racemes, without bracts; sepals and petals 4: pod large and mostly flat, pendulous, linear to oblong or obovate or even nearly circular, indehiscent, strong-ribbed on either side, 1-seeded, the stigma sessile; radicle mostly incumbent.—Species about 50, Eu., N. Afr.. Asia.

This genus includes the dyer's woad, I. tinctoria formerly cultivated for a blue dye but no longer advertised. Caesar relates that the ancient Britons used the wood for staining their bodies, and the word Britain itself comes from an old Celtic word meaning painted. Before indigo became common in Europe, the dyer's woad produced the chief blue coloring matter for woolen cloth. The introduction of indigo in the seventeenth century destroyed this important industry, not without opposition. Dioscorides and Pliny mention both the dyer's woad and indigo.

I. boissieridna Reichb. Annual, 12 in.: basal lvs. cuncate- oblong, toothed; upper lvs. entire, oblong: fls. yellow: pod pubescent, various. Turkestan. L. H.B.


The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.


Isatis is the ancient name of Yazd , a city in Iran.

Isatis
Isatis tinctoria
Isatis tinctoria
Plant Info
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Brassicales
Family: Brassicaceae
Genus: Isatis

Species
About 30 species, including:

Isatis boissieriana
Isatis glauca
Isatis indigotica
Isatis tinctoria

Isatis (Í-sa-tis) is a genus of about 30 species of flowering plants in the family Brassicaceae, native to the Mediterranean region east to central Asia. The genus includes woad (Isatis tinctoria). Template:Brassicales-stub