Identificaciones de physostegiaalexandra

I did not expect to find this one but a welcome surprise for sure. Growing in sphagnum in a quaking bog. The far side of the bog was inundated with glossy buckthorn (someone do something!). Associates include Larix, bogbean, Andromeda, Vaccinium, Sarracenia, Comarum... typical interesting bog plants. Individuals numbered around a few dozen, though I didn't trek the entire bog and count them. Population seems stable.