Carex atrata L. var. chalciolepis (T. Holm) Kük.
[= Carex chalciolepis]
Remarks: (synonym)

Montana: Rav County: Wet meadow that paralleled both sides of the creek draining Hidden Lake. Elev. 2499 m.
T2 N R16 W S16 SE 1/4 ; PMM
Datum: NAD 27. Uncertainty: 805 meters. Coordinate Source: TRS2LL.
Silt loam. 280 degree aspect, 20% slope. Wet meadow that paralleled both sides of the creek draining Hidden Lake. Phenology: Flowers.

Blaine H. M. Mooers 998, Aug 18, 1985
With Gloria R.B. Mooers
MONT, Accession: 71661