Sep. 12, 2018

fan clubmoss, Diphasiastrum digitatum

Are you a fan of clubmoss? I always have been. It's so interestingly different. And then there's Lycopodium powder. My first encounter with the powder was as an insecticide. Years ago, it was suggested I sprinkle it in my gardens to control Japanese beetles. I haven't seen one there since. More often it is used as flash powder in fireworks and physics demonstrations. The spores are very small, and have a high fat content. Their pitted shape gives them a very high surface area for their size. Sprinkled in the air near a flame or spark, you get quite a flash! This species is one of the main sources of the spore powder. Fan clubmoss grows in conifer forests and in low nutrient open ground in AL, AR, CT, GA, IA, IL, IN, KY, MA, MD, ME, MI, MN, MO, MS, NC, NH, NJ, NY(V), OH, PA, RI, SC, TN, VA, VT, WI, WV, NB, NF, NS, ON, PE, and QC. Midland Co MI, 3/25/12.