
The Enduring Mystery of Critchfield’s Spruce
Guest Author • Feb 17, 2021
Zach St. George The first and only time Steve Jackson spoke to Bill Critchfield was in the late 1980s. Critchfield, an authority on the conifers of North America, was at home recovering from a heart attack. Jackson, then a postdoctoral researcher at Brown University, had called looking for advice on how to tell jack pine from Virginia pine. Jackson … Read More