Sagittaria cuneata Sheldon

Arumleaf arrowhead

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Arumleaf arrowhead is a widespread North American native.

Identification: Arumleaf arrowhead has arrowhead-shaped leaves 1¾-6" (5-15 cm) long, on stalks that are triangular in cross-section. In addition to arrow-shaped leaves that are mostly above the water line, arumleaf arrowhead may have floating or submersed leaves that are long and narrow, and floating leaves that are oval- or heart-shaped. Flowers are white, with yellow centers. Each flower has three petals and three green sepals, and is up to ⅞" (2.5 cm) in diameter. Fruits are about ¹/₁₆" (2 mm) long, clustered on spherical heads.

9/7/2010 · Tower Hill Botanic Garden, Boylston, Mass­a­chu­setts
≈ 8 × 12" (20 × 31 cm) ID is uncertain

6/2/2010 · J. Harry Rich State Forest, Groton, Mass­a­chu­setts
≈ 13 × 19" (32 × 49 cm) ID is uncertain

Arumleaf arrowhead is easily confused with broadleaf arrowhead:

	You are here Sagittaria cuneata	Sagittaria latifolia
Common Name	arumleaf arrowhead	arrowhead
Flowers	Each flower has three white petals with yellow centers, and three green sepals; flowers are ⅜-¾" (1-2 cm) in diameter. Flower stalks held upward, not outward.	Each flower has three white petals with yellow centers, and three green sepals; flowers are 1½" (4 cm) in diameter. Flower stalks held outward, not upward.
Leaves	Leaves are 1¾-6" (5-15 cm) long. May also have floating or submersed leaves that are long and narrow, and floating leaves that are oval- or heart-shaped.	1¾-18" (5-45 cm) long.
Stem	Stalks are triangular in cross-section.	Stems angular in cross section.
Range/ Zones		USDA Zones: 4-11
Habitats	Shallow wetlands, river banks	Shallow wetlands, river banks
Type	Wild	Wild

Online References:

The Washington State Department of Ecology

The Massachusetts Division of Fisheries and Wildlife Natural Heritage & Endangered Species Program

The Jepson Manual

The Oregon Flora Image Project

Plants for a Future, a resource and information centre for edible and otherwise useful plants

The Washington State Department of Ecology

EFloras

6/2/2010 · J. Harry Rich State Forest, Groton, Mass­a­chu­setts
≈ 30 × 44" (75 × 112 cm) ID is uncertain

6/2/2010 · J. Harry Rich State Forest, Groton, Mass­a­chu­setts
≈ 3½ × 2½' (1.2 × 0.8 m) ID is uncertain

8/24/2013 · Cranberry Meadow Pond Trail, Monadnock Conservancy, Peterborough, New Hamp­shire
≈ 8 × 12" (21 × 31 cm)

8/24/2013 · Cranberry Meadow Pond Trail, Monadnock Conservancy, Peterborough, New Hamp­shire
≈ 3½ × 3" (9.6 × 7.8 cm)

5/5/2010 · Nashua River at Rte 119, Groton, Mass­a­chu­setts
≈ 16 × 19" (41 × 49 cm) ID is uncertain

8/8/2010 · Jeff Smith Trail, Beaver Brook Association Conservation Lands, Rte. 130, Hollis, New Hamp­shire
≈ 7 × 10" (16 × 25 cm) ID is uncertain

Sagittaria cuneata description by Thomas H. Kent, last updated 25 May 2020.

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8/8/2010 · Jeff Smith Trail, Beaver Brook Association Conservation Lands, Rte. 130, Hollis, New Hamp­shire
≈ 3 × 4½" (7.5 × 11 cm) ID is uncertain

8/28/2010 · Lake Messalonskee, Belgrade Lake, Maine · By Constance B. Kent ID is uncertain

8/24/2013 · Cranberry Meadow Pond Trail, Monadnock Conservancy, Peterborough, New Hamp­shire
≈ 6 × 8" (14 × 19 cm)

8/28/2010 · Lake Messalonskee, Belgrade Lake, Maine · By Constance B. Kent ID is uncertain

8/21/2017 · Pearl Hill State Park, Townsend, Mass­a­chu­setts
≈ 7 × 7" (18 × 18 cm)

4/27/2010 · Nashua River at Rte. 119, Pepperell, Mass­a­chu­setts
≈ 18 × 15" (46 × 38 cm) ID is uncertain

8/24/2013 · Cranberry Meadow Pond Trail, Monadnock Conservancy, Peterborough, New Hamp­shire
≈ 7 × 10" (16 × 25 cm)

Range:

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