Bidens hendersonensis var. oenoensis Sherff

Oeno Island Beggartick (Bidens hendersonensis var. oenoensis)

The Henderson Island Beggartick is found on Henderson Island, Pitcairn Islands and also occurs or occurred on the nearby Oeno Atoll, some three variaties are sometimes distinguished, with the form from the Oeno Atoll being one of them.

The Oeno form was only collected once in 1991, and was probably last seen in 1997. 


The Oeno Island Beggartick is now sometimes treated as a synonym of the nominate form, I’ll mention it here just for the sake of completeness. 


edited: 18.06.2019