| http://www.w3.org/ns/prov#value | - Double-flowering dahlias include cactus (tubular petals that curve backward for more than half their length), semicactus (similar to cactus except the petals are broad at their base and curve for less than half their length), decoratives (broad pointed or rounded petals, irregularly arranged), ball (ball shaped flowers over 2 inches in diameter), and pompons (ball shaped flowers less than 2 inches
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