Wapato, Arumleaf Arrowhead, Arum-leaved Arrowhead: Sagittaria cuneata (Synonym: Sagittaria arifolia) -
Broadleaf Arrowhead, Common Arrowhead, Wapato, Duck Potato: Sagittaria latifolia (Synonyms: Sagittaria esculenta, Sagittaria latifolia var. latifolia, Sagitarria latifolia var. obtusa, Sagittaria latifolia var. pubescens) -
Annual Sagittaria, California Lophotocarpus, Hooded Arrowhead: Sagittaria montevidensis ssp. calycina (Synonyms: Sagittaria calycina, Sagittaria calycina var. calycina, Lophotocarpus californicus) - At least 1 sample found at the north end of Klamath Marsh in south-central Oregon and 1 along the North Loop Steens Mountain Road.