Azolla filiculoides | water fern

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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

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Around 1.5 inches

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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

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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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About This Site
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List of Common Names
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Go to North America

water fern

water fern mosquito-ferns
Azolla filiculoides Azollaceae
--more--

common name
  water fern
accepted scientific name
  Azolla filiculoides Lam.
rules for finding collection records
  Azolla caroliniana (4)
  Azolla filiculoides (62)
  Azolla microphylla (0)
family name
  Azollaceae

Image Author: ©2008 Anthony Valois and the National Park Service
Image License: public domain
Image Source

Category: Aquatic Plants, Fern-like Plants
Fern Category: Fern
Plant Observed All Year
Native in America. Brought to Hawaii for mosquito control.

How Likely at this Location (18%)