YouTube has an Ed Miller recording of the song from his Generations of Change album:

https://www.youtube.com/watch?v=7j9bd8zQscI

Here's what I hear in the chorus. I have no idea how to interpret the words delphinium put in italics.

(But) Her eyes are dark, her breast is deep,
That steals a wedded woman's sleep,
That tempts good men into her keep,
And will not let them free.
The moon upon her shoulder gleams,
A siren o'er the ocean streams,
Who whispers in the seaman's dreams,
No mistress have but me.