Here's my version, put together from some of the lyrics above and others. The first verse is as I saw it in a very unofficial old folk song book in probably the late fifties. The rest is, as I said, a mix of many versions and maybe a word here and there I stuck in to help with the flow. I had no better luck than the rest of you with botanical reference to emanita or islip.

WILDWOOD FLOWER

I will twine and will mingle my waving black hair
With the roses so red and the lilies so fair
The myrtle so green with an emerald hue
The pale emanita and islip so blue

Oh he taught me to love him and promised to love
To cherish me always, all others above
I woke from my dreaming, my idol was clay
All passion for living had all flown away

He promised to love me and called me his flower
A blossom to cheer him thru life's weary hour
How my heart now is breaking, no mis'ry can tell
He left with no warning, no words of farewell

I will sing, I will dance, and my life shall be gay
I'll banish this weeping, drive sorrow away
Tho my heart now is aching, he never shall know
How his name makes me tremble, my pale cheeks to glow

I will sing, I will dance, and my life shall be gay
I will charm every heart in the crowd I survey
I'll live yet to see him regret the dark hour
He loved and neglected this frail wildwood flower

Repeat first verse