Extinct Plants of northern North America 2020

Wanna know what's really scary? Extinction. #ExtinctSymbol #Resist

As in past years, I'm limiting this list to northern North America for two reasons:

  1. Restricting this list geographically is in keeping with my specialization in plants native to northeastern North America.
  2. There are many more tropical plants, and plant extinctions, than I can manage.

In past years, I've only been able to find records for 6 plant species that have gone extinct. This year's list is a major update: 59 extinctions, and 7 extinct in the wild. This is largely due to the research presented in this August 2020 paper:

Vascular plant extinction in the continental United States and Canada

The summary is terse, and grim: