Dahlia - definizione. Che cos'è Dahlia
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Cosa (chi) è Dahlia - definizione

GENUS OF PLANTS
Dahlia 'Dahlstar Sunset Pink'; Dahlias
  • Close up of a Dahlia x cultorum Thorsrud & Reisaeter in [[Piracicaba]], [[Brazil]]
  • Dahlinova 'Carolina Burgundy' (''Misc'')
  • The Dahlia Garden at Holland House in 1907

Dahlia         
·noun A genus of plants native to Mexico and Central America, of the order Compositae; also, any plant or flower of the genus. The numerous varieties of cultivated dahlias bear conspicuous flowers which differ in color.
dahlia         
['de?l??]
¦ noun a tuberous-rooted Mexican plant of the daisy family, cultivated for its brightly coloured single or double flowers. [Genus Dahlia.]
Origin
mod. L., named in honour of the 18th-cent. Swedish botanist Andreas Dahl.
dahlia         
(dahlias)
A dahlia is a garden flower with a lot of brightly coloured petals.
N-COUNT

Wikipedia

Dahlia

Dahlia (UK: DAY-lee-ə, US: DA(H)L-yə, DAYL-yə) is a genus of bushy, tuberous, herbaceous perennial plants native to Mexico and Central America. A member of the Asteraceae (former name: Compositae) family of dicotyledonous plants, its relatives thus include the sunflower, daisy, chrysanthemum, and zinnia. There are 49 species of this genus, with hybrids commonly grown as garden plants. Flower forms are variable, with one head per stem; these can be as small as 5 cm (2 in) diameter or up to 30 cm (1 ft) ("dinner plate"). This great variety results from dahlias being octoploids—that is, they have eight sets of homologous chromosomes, whereas most plants have only two. In addition, dahlias also contain many transposons—genetic pieces that move from place to place upon an allele—which contributes to their manifesting such great diversity.

The stems are leafy, ranging in height from as low as 30 cm (12 in) to more than 1.8–2.4 m (6–8 ft). The majority of species do not produce scented flowers. Like most plants that do not attract pollinating insects through scent, they are brightly colored, displaying most hues, with the exception of blue.

The dahlia was declared the national flower of Mexico in 1963. The tubers were grown as a food crop by the Aztecs, but this use largely died out after the Spanish Conquest. Attempts to introduce the tubers as a food crop in Europe were unsuccessful.

Esempi dal corpus di testo per Dahlia
1. Ibrahim and Dahlia Farooq contributed to this report.
2. Both films are set in Hollywood‘s glamorous past –– "Dahlia" in 1'47 and "Hollywoodland" in 1'5' –– and deal with mysterious deaths: "Dahlia" concerns the murder of aspiring actress Elizabeth Short, while "Hollywoodland" investigates the supposed suicide of "Superman" actor George Reeves.
3. Karen Jepp of Calgary, Alberta, delivered Autumn, Brooke, Calissa and Dahlia by Caesarian section.
4. She will next star in "The Black Dahlia," Brian De Palma‘s adaptation of James Ellroy‘s novel.
5. Dahlia Hecht, director of the welfare department in the town of Nesher, agrees.