The branches of the palm trees symbolize Christ's victory over the devil and death. The word Hosanna means "Save, I pray," or "Save, now." The foal of an ass, and Jesus' sitting thereon, and the fact that this animal was untamed and considered unclean according to the Law, signified the former uncleanness and wildness of the nations, and their subjection thereafter to the holy Law of the Gospel.
Apolytikion in the Fourth Tone
Kontakion in the Plagal of the Second Tone
SAINT OR FEAST POSTED THIS DATE 2010(with 2009's link here also and further, 2008's, even 2007!