Parietaria

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Standard Cyclopedia of Horticulture

Parietaria (from parietarius, belonging to walls, referring to its habitat). Urticaceae. Annual or perennial herbs widely scattered in the temperate zones, scarce in the tropics. Fls. polygamous, cymose or glomerate at the axils; perianth of the hermaphrodite and male fls. deeply 4-lobed, rarely 3-lobed; lobes val- vate; of the female fl. distinctly tubulous at the base, lobes shorter; stamens 4, rarely 3; ovary free within the perianth; stigma penicillate, short or linear: achene included in the persistent perianth. Ten or more species. P. arborea, Ait., an erect shrub, with lvs. perfectly white underneath, has been offered in trade- lists. This belongs in the genus Gesnouinia, differing from Parietaria in being small trees with the involucre subtending 3-fld. glomerate -panicled branches: fls. monoecious, the central pistillate, with the achene included in the tube of the involucre. Gesnouinia contains 2 species belonging to the Canary Isls. CH 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 It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article.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:Parietaria. Some of the material on this page may be from Wikipedia, under the Creative Commons license.
• Parietaria QR Code (Size 50, 100, 200, 500)