Ditch Beardgrass, Ditch Polypogon, Ditch Rabbitsfoot Grass: Polypogon interruptus (Synonym: Polypogon lutosus) - From one collection near the southern end of the Alvord Desert.
Annual Beardgrass, Annual Rabbitsfoot Grass, Annual Rabbit's-foot Grass, Rabbitfoot Grass: Polypogon monspeliensis (Synonym: Alopecurus monspeliensis)
Beardless Rabbitsfoot Grass, Water Bentfrass: Polypogon viridis (Synonyms: Agrostis semiverticillata, Agrostis verticillata, Agrostis viridis, Polypogon semiverticillatus)