P. cyanescens and P. allenii are each small—never growing more than two or three inches tall—and have chestnut brown caps,...

P. cyanescens and P. allenii are each small—never growing more than two or three inches tall—and have chestnut brown caps,...

SketchUp is fairly affordable at round $120 to $300 a year—if you need commercial licensing. But it’s free if you’re...