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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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"Rosa." A Dictionary of Plant Sciences. . Encyclopedia.com. 16 Dec. 2017 <http://www.encyclopedia.com>.

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"Rosa." A Dictionary of Plant Sciences. . Retrieved December 16, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/rosa

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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"roses." The Oxford Dictionary of Phrase and Fable. . Encyclopedia.com. 16 Dec. 2017 <http://www.encyclopedia.com>.

"roses." The Oxford Dictionary of Phrase and Fable. . Encyclopedia.com. (December 16, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/roses

"roses." The Oxford Dictionary of Phrase and Fable. . Retrieved December 16, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/roses