This month I collected a threatened plant for the herbarium collection I am starting at the BLM Lander, WY field office. I collected one Yermo xanthocephalus, the desert yellowhead, whose only natural population(s) in the world exists here in Fremont County, WY (and yes, I did obtain a permit from USFWS to do this, as is required). I felt real bad about digging up the plant and pressing it, but I keep reminding myself that this if for scientific reference material and many people will be able to observe this plant now without disturbing the population.