A genus of tropical and subtropical herbaceous plants in the morning glory family, known for their small blue or purple flowers.
From Latin 'evolvere' (to unroll) + '-ulus' diminutive suffix. Named by Linnaeus for the plant's twining, unrolling habit—the stems spiral and unwind.
Evolvulus is called 'dwarf morning glory' and grows in tight spirals—the botanical name literally means 'little unroller,' perfectly describing how the stem twines and unwraps around supports.
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