Rubia

subsp. var.
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Standard Cyclopedia of Horticulture

Rubia (Latin, red; referring to the color of the dye extracted from the root). Rubiaceae. Mostly hardy herbs, sometimes shrubby at base, of little horticultural worth, but one, R. tinctorum, is of economic value. Plants frequently rather stiff, hispid, or aculeate: lvs. in whorls of 4-8 or very rarely opposite and stipulate, sessile or petioled, lanceolate or obovate, rarely cordate: fls. small or minute, in axillary or terminal cymes, 5-merous; involucre none; calyx-tube ovoid or globose, limb lacking; corolla rotate or subcampanu- late; ovary 2-celled or through abortion 1-celled: fr. didymous, fleshy, 2- rarely 1-celled.—About 40 species, Medit. region, Trop, and S. Afr.f Temp. Asia, Trop, and S. Temp. Amer. R. tinctorum is the dye-plant called madder, the long, fleshy roots of which are ground to powder. Madder is said to furnish a good green fodder if cut the second year when in flower. 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 It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article.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.

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References

• Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963

External links

• w:Rubia. Some of the material on this page may be from Wikipedia, under the Creative Commons license.
• Rubia QR Code (Size 50, 100, 200, 500)