sea-urchin cactus

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sea-urchin cactus

any of the genus Echinopsis, family Cactaceae, with 50-100 species native to South America at medium elevations in desert shrublands or grasslands. Several species, but most especially the Easter lily cactus (E. multiplex), are valued for their ease of growth and large flowers, with tubes up to 25 cm (10 inches) long. Most are hardy outdoors in Mediterranean climates.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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