NATIVE AQUATIC and WETLAND PLANTS in FLORIDA
An Introduction
(N.B. If you already know the following introductory information and just
want to see our listing of plant information and photos, go to this list of 394 species.)
THERE ARE MANY THOUSANDS OF SPECIES OF PLANTS in the United States, with more than 4,000 species identified and known to be in Florida. Most plants in Florida are "good" plants--they are native and non-invasive; they have evolved into their own ecological niches. Native plants provide food and shelter to animals of all sorts, stability to shorelines and fields, and visual pleasure to those of us lucky enough to live here.
Because a native plant species usually does not take over an area, there is biodiversity - a great number of species growing in balance and living together in harmony. Florida is famous for its biodiversity. There is great diversity because each native species is constrained in its growth by natural factors. Such natural factors include 1) competition with other native species, 2) native diseases, 3) predation by feeding native insects and other animals, 4) climate, 5) water level fluctuation, and so on.
This web page focuses on Florida's aquatic and wetland plants.
Most plants in Florida's wild areas are native plants, including terrestrial species and aquatic/wetland species. Our state is home to hundreds of native aquatic and wetland plants that live in damp to wet soils, and some even more specialized plants that live entirely in, on, or under water: they include submersed plants, emersed plants (including grasses, sedges and rushes), and floating and floating-leaved plants. (Scientists and government people refer to most of them as aquatic macrophytes. Visit our parent web site for information and photos on a couple of hundred aquatic and wetland plants.)
NATIVE SUBMERSED PLANTS
tape grass
Vallisneria americansago pondweed
Potamogeton pectinatusFlorida bladderwort
Utricularia floridanacoontail
Ceratophyllum demersum
Submersed plants grow entirely or almost entirely underwater. Some submersed species produce flowers and are pollinated underwater or at the water surface (tapegrass, above). Some submersed species have branches and leaves that reach and spread across the water just below the surface (sago pondweed). Some produce flowers that float on the surface (fanwort). Some have flower stalks that emerge up to six inches above the water (water milfoils). Some are free-floating plants that live underwater (bladderwort). And some have several of these attributes, such as coontail, which is a submersed, free-floating plant that produces very tiny flowers that pollinate underwater (coontail).
Some of the environmental roles of submersed plants are listed here. Information and photos of all these and other submersed plants may be found here.
NATIVE EMERSED PLANTS
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cat-tails Typha species |
duck potato Sagittaria lancifolia |
lemon
bacopa Bacopa caroliniana |
lake
hygrophila Hygrophila lacustris |
bur marigold Bidens laevis |
Emersed plants are plants that grow out of the water (or during low-water times, in exposed sediments). They are rooted to the bottom, but their stems, leaves and flowers are above the water. Some emersed plants have no particular stems - just leaves reaching for the sky (cattails). Some emersed plants are very large-leaved, with big spikes of flowers (the arrowheads and fire flag). Some are small plants, growing inches above the water (the bacopas). Some are viney, rooted in the mud but crawling across the water (the morning glories). Some are tall and leafy (the native lake hygrophila). And some can color a large prairie (bur marigold).
Environmental roles of emersed plants are listed here. Information and photos of all these and other emersed plants may be found here.
FREE-FLOATING AND
FLOATING-LEAVED PLANTS
Floating and floating-leaved plants are those that may or may not be anchored to the
sediment (they
may be rooted to the bottom or may be free-floating), but they all have leaves that float on the
water's surface. Florida has a number of native floating-leaved rooted plants, but,
curiously, Nature gave us very few free-floating plants compared to the number of
free-floating plants that exist in the world. As for free-floating, Florida's native plants include the
world's smallest flowering plant (a duckweed called water meal); and two
larger duckweeds (small duckweed and giant duckweed). (The free-floating plant, water hyacinth,
on the other hand, is a non-native invasive plant in Florida and is considered "the worst aquatic
weed in the world". It has invaded the waters of many countries from its native Brazil; it is pictured
and discussed on the
non-native plants page.)
Among Florida's native floating-leaved plants (that are rooted to the bottom) are the
waterlilies, spatterdock, American lotus, and water shield.
Environmental roles of free-floating and floating-leaved plants are listed here. Information and photos of all these and other floating and free-floating
plants may be found
here.
GRASSES, SEDGES, and
RUSHES
There are many native aquatic grasses, sedges and rushes in Florida. These are the
multitudinous plants that look like giant grasses (and some of them are just that), or they look like
leafless stems (and some are just that), or they look like Dr. Seuss plants (and some of them
are remnants of plant groups that were prevalent when the dinosaurs roamed).
Unfortunately, there are quite a few non-native invasive grasses, sedges and rushes in Florida. (Here's an introduction to invasive aquatic plants.) But among Florida's
native giant grasses are sugarcane plume grass and giant foxtail. Shorter grasses, such as
maidencane and knot-grass, grow in shallow marshes and lake margins and are extremely
valuable to Florida's fisheries. Among the
sedges are sawgrass (though this, the dominant plant in the Everglades, resembles a grass
and is called "sawgrass", it's not a grass), and star-rush. Then there are the
bulrushes and the true rushes of Florida, such as soft rush. (For more confusing
information about common names, see this page of our web site.
The grasses, sedges and rushes produce prodigious quantities of seeds for birds and
other animals, substrate for invertebrates and shelter for fish, as well as nesting and
padding for birds and alligators. Information
and photos of all these and other grasses, sedges
and rushes may be found here.
WHEN "GOOD" PLANTS GO "BAD"
INVASIVE PLANTS
More than 150 native aquatic and wetland plants are pictured
This page was authored by Vic Ramey.
For DEP, this page was reviewed by Jeff Schardt and Judy Ludlow.
This project is a collaboration of






water meal
Wolffia columbianasmall
duckweed
Lemna valdivianagiant
duckweed
Spirodela polyrhizawater lily
Nymphaea aquaticawater shield
Brasenia schreberiAmerican
lotus
Nelumbo lutea






maidencane
Panicum hemitomon Egyptian paspalidium
Paspalidium geminatum giant foxtail
Setaria magnasaw-grass
Cladium jamaicensesoft-stem bulrush
Scirpus validussoft rush
Juncus effusus
Native plants usually are not invasive. However, sometimes when a
site becomes "disturbed", such as when construction has taken place, a
ditch dug, or when natural water level fluctuations have been altered by man-made
drainage, pumping systems, or dams, then certain native plants will act invasively. Our
native cattails (Typha species) are famous for quickly filling in wet areas that have
been disturbed or altered. They are often the dominant plant in man-made ponds
and ditches. In the Everglades, for example, cattails are crowding out the desirable
saw grass, which produces much food and shelter for native Everglades animals. It
is believed that man-made alterations in water level fluctuations has somehow given
a growth advantage to the cattail over saw grass.
Unfortunately, almost every place on earth is being invaded by plants from
other places. Our coontail is invading South Africa. Sri Lanka's hydrilla
is invading here. Our tapegrass is invading Australia. Burma's reed is invading
here. Learn more about the perils caused by invasive plants
here.
here on our sister web site.
Data is from the APIRS
database.
Photography and graphics are by Ann Murray, Sara Reinhart and Vic Ramey.
This page is maintained by Alison Moss.
the Center for Aquatic and Invasive Plants, University of Florida,
and the Bureau of Invasive Plant Management, Florida Department of Environmental
Protection
CAIP-WEBSITE@ufl.edu
Copyright 2004 University of Florida