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Broadleaf Arrowhead (Sagittaria Latifolia)

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Broadleaf Arrowhead (Sagittaria Latifolia) ~ BOARD OF WATER rn11 AND SOIL RESOURCES 2018 June Plant of the Month BWSR Featured Plant Name: Broadleaf arrowhead (Sagittaria latifolia) Plant family: Water plantain (Alismataceae) Broadleaf Broadleaf or common arrowhead is arrowhead is widespread in Minnesota’s wetlands, common throughout the United States ditches, shorelands and other wet and Canada in wet habitats. It has arrow-shaped leaves habitats, thriving in and white, water 6 to 12 inches three-petaled Plant Stats deep. One exception flowers that is Illinois, where it is STATEWIDE a state endangered bloom in species. Arrow- summer. WETLAND shaped leaves give Also called INDICATOR this plant its name. STATUS:OBL duck potato, Courtesy Photos arrowhead PRIMARY USES: produces Food and cover tubers that for aquatic animals; wetland are eaten by and shoreline a variety of restoration waterfowl and other wildlife. It can also buffer shorelines and banks against wave energy and absorb nutrients and metals from water and sediments. Arrow-shaped leaves give this plant its name. Identification Range Broadleaf arrowhead has White, three-petaled flowers Broadleaf Manitoba Ontario basal, arrow-shaped leaves up to 1 inch across are arrowhead is found with two lower lobes that produced in whorls of three in wet habitats are about the same length on scapes that rise above throughout the as the upper lobe. Although the leaves. United States leaves are typically broad and Canada. This (latifolia means “wide leaf”), Spherical clusters of tiny obligate wetland their width is variable. winged fruits are produced species thrives into October. Each fruit in water 6 to 12 Emersed leaves may have is tipped with a pointed, inches deep, but narrower blades than horizontally projecting will tolerate other emergent leaves. Leaves are beak. The plant reproduces conditions. It is Range map source: U.S. Department ofRange Agriculture's map Natural is from Resources USDA 1 to 6 inches wide and 4 to vegetatively by rhizomes common throughout Conservation Service plants database 12 inches long. The plant (horizontal, underground its range except in NRCS Plants Database. grows up to 4 feet tall. stems) and by the Illinois, where it is production of golf-ball- a state endangered Flowering begins in July. sized tubers. species. www.bwsr.state.mn.us 1 Uses Planting Recommendations Both the seeds and Americans and early Choose a location with tubers of broadleaf European settlers full sun and a water arrowhead are a food harvested the tubers depth of 6 to 12 inches. source for many kinds and baked, boiled Broadleaf arrowhead of wildlife, but the or roasted them to can be established using tubers are said to be eat or for medicinal live plants, bare-root the most valuable. stock or tubers. Live purposes. More Mallards, blue-winged plants or tubers are recently, broadleaf teal, black ducks, swans best for planting in arrowhead has been and geese are among moving water. Broadleaf used in wetland and the waterfowl that arrowhead also can be shoreline restorations. eat them. The tubers propagated from seeds, It’s important not only may be too deep for but they require two some ducks to loosen for its wildlife value but years to germinate. For them from sediment. also for its ability to faster establishment, Muskrats, beavers dissipate wave energy choose plants or tubers. and porcupines are and take up metals and This plant is available also known to eat nutrients — especially Broadleaf arrowhead blooms from July into at many native plant the tubers. Native phosphorus. September. Courtesy Photo nurseries. Similar Species Several Sagittaria species is widespread in the (S. brevirostra) are known and fruits that differ in Minnesota have arrow- state, whereas long-lobed from scattered locations from those of broadleaf shaped leaves. Northern arrowhead (S. calycina) and in southern and western arrowhead. arrowhead (S. cuneata) Midwestern arrowhead Minnesota. All have leaves From left: Broadleaf arrowhead (S. latifolia)Courtesy Photo; Northern arrowhead (S. cuneata) Photo Credit: Peter Dzuik of Minnesota Wildflowers; long-lobed arrowhead (S. calycina; S. montevidensis subsp. calycina) Photo Credit: Katy Chayka of Minnesota Wildflowers; Midwestern arrowhead (S. brevirostra) Line Drawings: Line drawings: USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 1: 99. Photos and drawings are not to scale. Typically, fruits are 1 to 3 millimeters long. References USDA Plants Database: https://plants.usda.gov/core/profile?symbol=SALA2 Wetland Plants of Minnesota, by Steve W. Chadde. 2012. Second edition (revised). Article 99: Broad-leaf Arrowhead: A Workhorse of the Wetland. https://owl.cwp.org/?mdocs-file=4813 Minnesota Wildflowers. https://www.minnesotawildflowers.info/ Developed by Susan Nelson www.bwsr.state.mn.us 2 .
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