Calliergon trifarium (F. Weber & D. Mohr) Kindb.

Montana: Missoula County: Lolo National Forest. About 12 air miles west-southwest of Seeley Lake townsite, at head of Boles Creek in Elk Meadow. Elev. 5650 ft.
47.1005° N, 113.7126° W
Topographic Position: broad saddle bottom. Hydrologic Regime: permanently saturated. Canopy Cover: trees 0%, shrubs 0%, herbs 20%. Slope: flat. General vegetation type: Calcareous marsh/meadow complex. Dominant associated plants: Carex lasiocarpa, Deschampsia cespitosa, Utricularia minor, Chara, Potamogeton gramineus, Triglochin maritima, Scorpidium scorpioides, Drepanocladus. Submerged to predominantly emergent in 1-5 inches standing water among sedges and other mosses. Highly calcareous silt loam soil. Color: dark green to brown. Growth Habit: Woven among other mosses, with upright stem tips. Abundance: uncommon. Substrate: aquatic.

Craig T. Odegard 217, Aug 27, 2013
WTU, Barcode: WTU-B-076630