Jul. 12, 2021

Laurentian fragile fern, Cystopteris laurentiana

Laurentian fragile fern? How do we know? It sure looks like a couple of other fragile ferns. The lowest divisions of the frond are shorter than the ones above. Can't see it? Neither could I. Fortunately, there are also tiny glands underneath that the others don't have. You just take the lens off your camera, look through it backward, and you've got a great magnifier. But even then I wasn't sure I knew what I was looking at. Again, fortunately, I could hand the lens and the frond to the guy next to me. Handy to have the state's number one expert on "What is this?" with you. Dr. Tony Reznicek confirmed the ID. And of course had already been the source of the identifying info. Trips with the Botany Club are pretty much like that. Picture an amazing bunch of botanical knowledge, walking around together in intense moments of natural synergy. Laurentian fragile fern grows on limestone outcrops in IA, IL, MA, MI, MN, NH, PA, VT, WI, NB, NF, NS, ON, PE, and QC. Mackinac Co MI, 6/19/21. Fragile fern family, Cystopteraceae.