"Now rejoice, O beautiful myrtle plant..."

Panagia Myrtidiotissa ("Of the Myrtle Tree") (source)

  

 

Now rejoice, O beautiful myrtle plant, for you were sought by the Theotokos for a Throne and palace for her all-holy Icon, and with joy, you were wondrously sanctified by the Queen, who spoke forth from your branches.
-Troparion from the Canon for the feast of Panagia Myrtidiotissa.
  
(source)
  

Most-holy Theotokos, save us!