Bristly Mousetail: Myosurus apetalus (Synonym: Myosurus aristatus) - (variety borealis or variety montanus ?)
Least Mousetail, Tiny Mousetail: Myosurus minimus (Synonyms: Myosurus lepturus, Myosurus lepturus var. filiformis, Myosurus minimus ssp. major, Myosurus minimus var. filiformis, Myosurus minimus var. major) -