here, I linked wine in a novel, ale in a poem and soma in a Veda. But there are other conceptual links. Yeats' poem continues:
"I have been a hazel tree..."
Poul Anderson's The Avatar (London, 1985), Chapter I, begins:
"I was a birch tree..." (p. 1)
"I was Tree." (ibid.)
The speaker in Yeats' poem becomes a rush and a man. The speaker in The Avatar becomes a moth, a salmon, a crow, a chimpanzee and a man. See here.
Stars hang in the hazel's leaves. The Pilot Star evokes navigation and Anderson's Hanno. The Starry Plough was an Irish flag. Anderson's readers remember Odin hanged and men hanged to him. "...times out of mind..." evokes the forgotten past and presents deeper meanings for readers of the Time Patrol. Yeats' man was "...a hater of the wind..."