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Rosa
Rosa (roses; family Rosaceae) A genus of prickly, often scrambling shrubs that normally have pinnate leaves with stipules. The flowers have usually 5 sepals and petals, and numerous free stamens and free carpels, but the carpels sit in a deep cup formed by the calyx tube which becomes fleshy in the fruit, forming the rose hip, a valuable source of vitamin C. It is probably the most widely cultivated ornamental flowering plant. Many species and complex hybrid forms are cultivated for their showy, often fragrant flowers, which range in colour from white, yellow, and red, to a lilac-blue. The separation of the 7 chromosome sets in the formation of gametes is uniquely complex and may be a factor in producing their taxonomic diversity. There are about 100 species, found in the northern temperate zone, with subtropical outliers, but the genus contains many critical taxa (see TAXON) whose specific status is uncertain.
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Cite this article
MICHAEL ALLABY. "Rosa." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "Rosa." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O7-Rosa.html MICHAEL ALLABY. "Rosa." A Dictionary of Plant Sciences. 1998. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-Rosa.html |
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roses
roses used to refer to favourable circumstances or ease of success.
roses, roses, all the way very successful or pleasant; quoting the first line of Robert Browning's Patriot (1855), describing the literal throwing of roses at a popular hero as he passed through the streets. See also a bed of roses, rose. |
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Cite this article
ELIZABETH KNOWLES. "roses." The Oxford Dictionary of Phrase and Fable. 2006. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. ELIZABETH KNOWLES. "roses." The Oxford Dictionary of Phrase and Fable. 2006. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O214-roses.html ELIZABETH KNOWLES. "roses." The Oxford Dictionary of Phrase and Fable. 2006. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O214-roses.html |
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