Local, occasional to common in poor fen bordering the southwest bay of Hula Lake. Nearly continuous carpets of Sphagnum mosses. Deep, quaky, saturated peat. Mostly in full sun (to partial shade of widely-scattered, stunted Larix laricina and Picea mariana). Forming large loose patches.
Associates include Carex limosa, C. rostrata, C. utriculata, Smilacina trifolia, Drosera rotundifolia, D. intermedia, Vaccinium oxycoccus, Chamaedaphne calyculata, Myrica gale.