In the summer it’s easy to spot a stand of horsetail milkweed (Asclepias subverticillata) along the side of the road with its slender leafed...
Leslie Newton Goodding had a busy career. It was when he worked for the U. S. Department of Agriculture that he collected the type...
When I initially wrote this story I was using Lyman Benson’s The Cactus of Arizona as my reference and the queen of the night...