Jan. 11, 2017

flatleaf bladderwort, Utricularia intermedia

Little bog of horrors! This plant is carnivorous. Bladderworts grow in shallow water or wet soil. They are well adapted to low nutrient sites like bogs. They supplement their diet with small organisms that they trap. Underwater, they have small bladders that trap animals from protozoa to fish fry. This species is adapted to wet soil as well as water, and have smaller traps that only prey on the smallest victims. When the bladders are sprung, they operate in 10 to 15 thousandths of a second. This plant was in water at the edge of a bog. Rather than risking feeding it, I took this image from the shore about 3 feet away with a telephoto lens. The flower is about 2/3 inch high. This species is circumboreal. On this continent it grows in CA, CT, IA, ID, IL(E), IN, MA, MD, ME, MI, MN, MT, ND, NH, NJ, NV, NY, OH(T), OR, PA(T), RI(SC), UT, VT, WA(S), WI, WY, throughout Canada, and in GL and SPM. Washtenaw Co MI, 5/28/12