Native of western N. America. Rare. Aquatic. Contains milky juice. Stems, 2-4dm tall. Leaves, long-stalked, mostly arrow-shaped, or when submerged, ribbon-like. Flowers, white, 3-petalled, mostly unisexual; in whorls of 3, on erect flowering stem; females below; males above; lance-shaped bracts of flowerheads, 5-40mm long; June-August. Fruit, head at maturity, seldom over 1.5cm wide; beak of achene (seed) erect, less than 0.5mm long. Habitat: mud and shallow water. s.Weas.N50.59.178/W114.09.516.
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Recent Arum-leaved Arrowhead Reports in Alberta
County of Wetaskiwin No. 10
Red Deer College
Arum-leaved Arrowhead Hotspots in Alberta
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