Sagittaria latifolia
family: Water-plantain (Alismataceae)
hetonėheséeo'ȯtse ? (Tallbull 1993: 48), "haunch (?) root (medicine)"
Broadleaf arrowhead is perennial plant up to 45 cm tall. Leaf-stalk is 6 to 50 cm long. Leaves are arrow- to wedge-shaped, 2 to 30 cm long and 2 to 17 cm wide. Blossom is cluster, 4 to 25 cm wide, with white, trifoliolate flowers about 4 cm in diameter. Flower stalk is 10 to 60 cm long. Broadleaf arrowhead blossoms from July to September. It grows in stagnant or slowly flowing shallow waters. It forms dense colonies. It ranges all US territory and southern Canada; more coherent distribution in the Eastern USA and California; also, it ranges from Lewis Range to Rosebud Creek in Montana and from southern edge of Black Hills, along Laramie River, to Medicine Bow Mountains.
Cheyennes gathered nourishing, starchy bulbs in end of long slender roots. They dug them from water with digging stick (hásoo'o) or bare hands. It used to be work of  young boys. The bulbs was boiled or roasted (Tallbull 1993: 48).
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