Boykinia Nuttall. Boykinia.
A genus of 7 species, herbs, of e. Asia, e. North America, and w. North America, a classic relictual distribution. The other species are distributed primarily in the Pacific Northwest or Rocky Mountains, with several endemics in Japan and an endemic in the unglaciated portions of AK and e. Siberia.
ID notes: Sometimes mistaken in vegetative condition for Trautvetteria, which is a coarser plant, often occupying similar habitats.
Ref: Gornall (2009) In Flora of North America Editorial Committee (2009); Soltis In Kubitzki, Bayer, & Stevens (2007). Show full citations.