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Arumleaf Arrowhead

Sagittaria cuneata


USDA, NRCS. 2018. The PLANTS Database (http://plants.usda.gov, 28 March 2018). National Plant Data Team, Greensboro, NC 27401-4901 USA.
Illustration: 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.

What Is Arumleaf Arrowhead?

Other common spellings and names include: narrowleaf arrowhead.

Physical Characteristics

Leaves:

  • Straight or spreading straight
  • Leaf blades triangular or egg-shaped
  • Arrowhead shaped
  • Portion above the base lobes up to 6 inches long & 8 inches wide

Flowers:

  • Stamen have fleshy, slendy filaments
  • Stamen same length as anthers
  • Up to 0.59 inches in diameter
  • Bloom Jun – Sep

Fruit:

  • Egg-shaped
  • Up to 0.09 inches long & 0.08 inches wide
  • Faces usually with low, narrow ridge

Stem:

  • Straight or arching
  • Simple, sometimes branching
  • Main axis can have up to 7 whorls
  • Bracts egg- or sword-shaped, up to 0.78 inches long

Where Does it Grow?


Arumleaf arrowhead can be found along rivers and streams.

Pros and Cons of Arrowhead

The tubers of arrowheads are prized foods by ducks, geese, muskrats, and nutria. Seeds are sometimes consumed by ducks. Submerged portions of all aquatic plants provide habitats for many micro and macro invertebrates. These invertebrates in turn are used as food by fish and other wildlife species (e.g. amphibians, reptiles, ducks, etc.). After aquatic plants die, their decomposition by bacteria and fungi provides food (called “detritus”) for many aquatic invertebrates.

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Photo Credits: The majority of the aquatic plant line drawings are the copyright of the University of Florida Center for Aquatic Plants (Gainsville). They are used with permission.

Aquatic plant photographs were provided by David Bayne, Jim Davis, Kelly Duffie, Billy Higginbotham, Michael Masser, John Clayton, Chetta Owens, Diane Smith, Joe Snow, Don Steinbach, Bridget Robinson Lassiter and Peter Woods.

You may use these photos, so long as you give credit to AquaPlant.

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