Meadow Foxtail, Shortawn Fescue, Shortawn Foxtail, Short-awn Foxtail: Alopecurus aequalis var. aequalis (Synonyms: Alopecurus aequalis var. natans, Alopecurus aristulatus, Alopecurus geniculatus var. aristulatus, Alopecurus geniculatus var. fulvus)
Carolina Foxtail, Tufted Foxtail: Alopecurus carolinianus (Synonyms: Alopecurus macounii, Alopecurus ramosus)
Water Fescue, Water Foxtail: Alopecurus geniculatus (Synonyms: Alopecurus geniculatus var. geniculatus, Alopecurus pallescens)
Blackgrass, Slender Meadow Foxtail: Alopecurus myosuroides (Synonym: Alopecurus agrestis)
Field Foxtail, Meadow Foxtail: Alopecurus pratensis
Annual Foxtail, Pacific Foxtail, Pacific Meadow Foxtail: Alopecurus saccatus (Synonyms: Alopecurus californicus, Alopecurus howellii)