See this link for the symbols to use on the Jesse Tree.
O Sapientia ( )
O Wisdom, Which camest out of the mouth of the Most High, reaching from end to end and ordering all things mightily and sweetly: come and teach us the way of prudence.
O Adonai ( )
O Adonai, and Leader of the house of Israel, Who didst appear to Moses in the flame of the burning bush, and didst give unto him the law on Sinai: come and with an outstretched arm redeem us.
O Radix Jesse ( )
O Root of Jesse, Which standest for an ensign of the people, before Whom kings shall keep silence, Whom the Gentiles shall beseech: come and deliver us, and tarry not.
O Clavis David ( )
O Key of David, and Scepter of the house of Israel, that openest and no man shutteth, and shuttest and no man openeth: come and bring the prisoner forth from his prison-house, and him that sitteth in darkness and in the shadow of death.
O Oriens ( )
O Day-spring, Brightness of light eternal, and Sun of Justice, come and enlighten them that sit in darkness and in the shadow of death.
O Rex Gentium ( )
O King of the Gentiles and the desire thereof, Thou cornerstone that makest both one, come and deliver mankind, whom Thou didst form out of clay.
O Emmanuel ( )
O Emmanuel, our King and Lawgiver, the desire of the nations and the Savior thereof, come to save us, O Lord our God.