Zannichellia palustris | horned pondweed

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36.056316, -112.08046
36° 3′ 22.77″ N, 112° 4′ 49.66″ W
36 3 22.77, 112 4 49.66

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Flower Size

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About 1/4 inch

About 1/2 inch

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About an 1 inch

Around 1.5 inches

Around 2 inches

Around 3 inches

Over 4 inches

If you don't carry a ruler you can use a quarter which is an inch in diameter. Although flowers may be easy to measure, the size often varies. Botanical descriptions often do not include the flower size so some of our size information may be wrong.

When a plant has clusters of small flowers you should measure the size of a flower even though it may be very small. Many plants have flowers that are not obvious and in that case we put them in the "Very Small" category.

Leaf Attachment

Alternate

Opposite

Basal

Whorled

Habitat	Description
Alpine	Growing above timberline
Aquatic	Growing in or floating in water
Brush	Scab, chaparral, thicket, clearcut, scrub and similar terms
Cliff	On a cliff, rock wall or similar surface
Desert	Described as a desert, wash, arid or very dry area
Disturbed	Along a road, railroad, burned area, vacant lot and similar places
Epiphyte	Growing on a plant or on decaying plant material
Forest	In a grove, stand or woods or otherwise associated with trees
Grassland	A pasture, prairie, rangeland or steppe
Meadow	An area described as a meadow
Riparian	Near a stream, river, lake, seep or other wet area
Rocky	An outcrop, scree, talus area or other rocky area
Salt Marsh	An alkali or tidal area
Sand	An area described as sandy or a sand dune
Wetland	Marsh, swamp, bog, fen or wetland
Ignore	No habitat specified

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horned pondweed

horned pondweed pondweed family
Zannichellia palustris Potamogetonaceae
--show more--

English common names
  •horned pondweed
  •common poolmat
accepted scientific name
  •Zannichellia palustris L.
rules for finding collection records
  •Zannichellia palustris (25)
family name
  • Potamogetonaceae

Image Author: ©2011 Anthony Valois and the National Park Service
Image License: public domain
Image Source

Category: Wildflowers, Aquatic Plants
Flowers: No obvious petals
Petal colors:

Leaf: Opposite, Whorled, Simple
Plant Observed 2nd week of June thru 1st week of December

How Likely at this Location (12%)

Name Match (100%)

Plant Showiness (27%)

Links to Plant Descriptions
Illinois Wildflowers (2)
Flora of North America
Wikipedia Español
UW Herbarium (11)
E-Flora BC
Wikipedia English
Yavapai County Plants (2)
Jepson
WFO Monographs
SEINet (4)

Links to Plant Photos
Tony Valois NPS (7)
Cal Photos (11)
Wikimedia Commons (6)
Gila Wilderness (4)
Instituto Darwinion (3)

Where the plant has been found

Credits

Elevation (m) vs. Time of Observation (Flowering)

Credits