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popular name for several tall-flowering, infrequently branching plants, such as goldenrod and mullein. The name is an allusion to the rod that AaronAaron
, in the Bible, the brother of Moses and his spokesman in Egypt, and the first high priest of the Hebrews. He is presented as the instrument of God in performing many signs, such as the turning of his rod into a serpent and causing the rod to bud, blossom, and bear almonds.
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 placed before the ark and that miraculously blossomed and bore almonds.