I'll bet that's "The Black Dodder" by Mick Fitzgerald, found on Danny's CD Journeys of the Heart. You can order it from him, as I did at 725 Pomona Ave., Albany CA, 94706 ($15).
He is no longer with Robin Petrie, but is still making lots of music around the SF Bay Area.
Did you want a transcription of the words, too, Susan?
Blessings,
Barbara