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Cleome hassleriana

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Cleome hassleriana, commonly known as spider flower, spider plant,<ref name=huxley/> pink queen,<ref name=grin/> or Grandfather's Whiskers,<ref>https://florafaunaweb.nparks.gov.sg/special-pages/plant-detail.aspx?id=3313</ref> is a species of flowering plant in the genus Cleome of the family Cleomaceae, native to southern South America in Argentina, Paraguay, Uruguay, and southeast Brazil.<ref name=grin>Template:GRIN</ref> It has also been introduced to South Asia, including the Haor area of Bangladesh.<ref>http://www.prothomalo.com/bangladesh/article/1472506/ফুলের-নাম-পিউম</ref>

It is an annual growing to a height of Template:Convert, with spirally arranged leaves. The leaves are palmately compound, with five or seven leaflets, the leaflets up to Template:Convert long and Template:Convert broad and the leaf petiole up to Template:Convert long. The flowers are purple, pink, or white, with four petals and six long stamens. The fruit is a capsule up to 15 cm long and Template:Convert broad, containing several seeds. Flowering lasts from late spring to early fall.<ref name=huxley>Huxley, A., ed. (1992). New RHS Dictionary of Gardening 1: 652. Macmillan Template:ISBN.</ref>

C. hassleriana is commonly cultivated in temperate regions as a half-hardy annual. Numerous cultivars have been selected for flower color and other attributes. The "Queen" series includes the cultivars 'Violet Queen', 'Rose Queen', and 'White Queen'. The cultivar 'Helen Campbell' has gained the Royal Horticultural Society's Award of Garden Merit<ref>Template:Cite web</ref> (confirmed 2017).<ref>Template:Cite web</ref> Plants in cultivation have at times been misidentified as Cleome arborea, C. pungens or C. spinosa.<ref name=grin/>

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