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 Leaves Paul Rothrock @http://swbiodiversity.org, Usage Rights: http://creativecommons.org/licenses/by-nc/4.0/ |  Plant University of Wisconsin-Madison, Wisconsin State Herbarium, Usage Rights: CC BY-NC (Attribution-Non-Commercial) | | | | |
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Origin:
Native
Life Cycle:
Perennial
General Desc:
Submersed aquatic; stems flattened, sparingly branched, jointed; leaves narrow, submerged, wavy-margined, arranged spirally; flowers small, dense, stalks terminal, emergent from water, usually; plant decays after flowering and fruiting.
Identification notes: Perennial aquatic forb; stems jointed; leaves wavy-margined, submerged, somewhat narrow, partially clasping; plants decay after flowering and forming turions (small shoots), turions remain and start to grow in fall, winter, overwinter as small plants.
Height:
12 to 40 inches wide
Habitat Description: Found in quiet water of lakes, ponds, rivers, and irrigation ditches.
Plant Communities:
Riparian
Elevation: 3000 - 4600 feet
Color:
Greenish
Shape:
Regular in elongated clusters
Tubular:
N
Flowering Period:
Jul - Sep
Description:
Small, dense, cylindrical spike of greenish, tiny flowers, upright and emergent from the water, 1/4 to 1/2 inch long; usually on a terminal stalk, 1 to 2 inches long; tepals 4; stamens 4; anthers 2-chambered; 4 edge-to-edge sepal-like outgrowths.
Leaf Color:
Translucent
Leaf Type:
Simple
Leaf Shape:
Narrow
Leaf Margin:
Smooth
Leaf Attachment:
Alternate
Leaves Clasp:
Y
Hairs:
No
Spines:
N
Leaf Description:
Stems compressed, branched; leaves narrow, stemless, all submerged, half-clasping, 1 to 2 inches long, wavy-margined, more or less arranged spirally, translucent, 3 to 5-veined, finely and irregularly toothed; stipules free from leaf blade, brownish.
Fruit Color: Reddish to reddish-brown
Fruit Type: Berry-like
Fruit Notes: Stemless drupe (fleshy, fruit, splits at maturity, stony inner layer surrounding usually a single seed), reddish to reddish-brown, to 1/8 inch long, round, ridged, with an upright, narrow, elongated tip, 1/16 to 1/8 inch long.
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