And now, for something completely different

Hi all,
Does anyone have any suggestions as to what daffodil could be the one in the below letter? Any suggestions, or suggestions as where to look, would be most appreciated. What, in 1761, was the “nectarium” anyways? The pedicle or the corona, or ??? Alexander Garden lived in Charleston, SC
-s
Alexander Garden to John Bartram, February 23, 1761 “N. B. I should be much obliged to you for some Hyacinths, some Narcissus with the longest Nectariums—we call these Horsenecks. I have one or two Persian irises that blossom beautifully. If you could spare some more I should be glad of them or any other bulbous root—”