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Crocus contains over 100 perennial corms which produce a range of colourful, rounded, funnel-shaped flowers in autumn or spring. Common colours seen are purple, white and yellow and they typically do not grow over 10cm high, or spread further than 8cm wide. They are adapted to woodland, meadow and scrubland habitats from low altitudes at sea level ranging to alpine tundra in Central and South Europe, North Africa and the Middle East. This genus is widely cultivated and many colourful varieties have been produced, including striated multi-coloured blooms and species that produce larger flowers.