Aaron's rod

(Botany) any of a number of plants having tall flowering stems (such as the golden-rod and the great mullein)

Aaron's rod refers to any of the staffs carried by Moses' brother, Aaron, in the Old Testament. Along with Moses' rod, Aaron's rod was endowed with miraculous power during the Plagues of Egypt which preceded the Exodus. Upon two occasions, however, the singular virtue of spontaneous power when not in the grasp of its possessor was exhibited by Aaron's rod.
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Noun
1. tall-stalked very woolly mullein with densely packed yellow flowers; ancient Greeks and Romans dipped the stalks in tallow for funeral torches
(synonym) common mullein, great mullein, flannel mullein, woolly mullein, torch, Verbascum thapsus
(hypernym) mullein, flannel leaf, velvet plant

A rod with one serpent twined around it, thus differing from the caduceus of Mercury, which has two.

  

A plant with a tall flowering stem; esp. the great mullein, or hag-taper, and the golden-rod.

  

BASTONE D'ARONNE [BIBBIA]. VERGA D'ORO [BOTANICA]. BARBASSO. TASSOBARBASSO [BOTANICA]

BASTONE D'ARONNE [BIBBIA]. VERGA D'ORO [BOTANICA]. VERBASCO [BOTANICA]. BARBASSO [BOTANICA]. TASSOBARBASSO [BOTANICA]