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 Plant Kathryn Kalmbach Herbarium, Usage Rights: CC0 1.0 (Public-domain) | | | | | |
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Origin:
Native
Life Cycle:
Perennial
General Desc:
Partially submerged aquatic with slender much branched stems, stems terete (cylindrical and tapering) to flattened, 12 to 32 inches long, arising from slender, spreading rhizomes; 2 types of leaves, submerged and floating; flowers emerging above water.
Identification notes: Partially submerged, stems slender, much branched; stipules free from leaf bases; submerged leaves less than 1/8 inch wide, narrow to ovate, stemmed; floating leaves broad and leathery, stemmed; flowers spikes above water, cylindric; 4 greenish tepals.
Height:
12 to 32 inches long
Habitat Description: Found in slow moving water, ponds, lakes, streams, and marshy sites.
Plant Communities:
Riparian
Elevation: 3200 - 11000 feet
Color:
Greenish
Shape:
Regular in elongated clusters
Tubular:
N
Flowering Period:
Jun - Aug
Description:
Cylindric spike emerging above the water on a stout stalk, 5 to 10-whorled, 3/4 to 4 inches long, with numerous perfect, greenish, stemless flowers, with 4 greenish claw-like tepals, 4 stamens, 2-chambered anthers, 4 edge-to-edge sepal-like outgrowths.
Leaf Color:
Green
Leaf Type:
Simple
Leaf Shape:
Narrow
Leaf Margin:
Smooth
Leaf Attachment:
Alternate and opposite
Leaves Clasp:
N
Hairs:
No
Spines:
N
Leaf Description:
Stipules free from leaf bases; submerged leaves narrow, soft, 6 to 18 inches long, 5 to 7-veined, light green to brownish-green; floating leaves leathery, stemmed, blades ovate to elliptic, 3/4 to 3 inches long, yellow-green to dark green, 13 veins.
Fruit Color: Greenish-brown
Fruit Type: Berry-like
Fruit Notes: Stemless, greenish-brown, rounded and laterally compressed, obscurely ridged laterally and below, about 1/16 inch with erect elongated tip.
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