As I discuss in this question, the book "Venkatachala - Its Glory" is a translation of the Sthala Purana (temple scripture) of the famous Tirupati temple, and this temple scripture consists of excerpts from various Puranas that discusss the story of Venkateshwara (the Vishnu deity in Tirupati, AKA Balaji or Srinivasa).
In any case, the Sthala Purana describes the wedding of Vishnu and Padmavathi in great detail. The wedding is officiated by the god Brahma, and before the wedding begins Brahma asks Vishnu to worship his "family deity." This excerpt describes Vishnu's response:
"Our family deity is the sacred Sami tree" said Srinivasa. Agastya located the tree. The bridegroom went round it praising it. He then offered worship to his family goddess.... In a golden vessel, filled with pearls and covered by a costly cloth, the family goddess was offered worship and consecrated near Lord Varaha. Srinivasa was conducting himself as an ordinary human being!
My question is, why does Vishnu say that his family deity is the Sami tree? I know about the holiness of the Tulasi plant for Vishnu, but I hadn't heard that the Sami tree was sacred for him. And in any case, I'm not sure what it would mean for Vishnu to have a "family deity".
Also, does anyone know what actual Purana this passage from the Sthala Purana of Tirupati is taken from?