This list of Calamus Swamp flora is organized alphabetically by scientific name.
| Scientific Name |
Common Name |
| Acer megundo | Boxelder |
| Acer rubrum | Red Maple |
| Acer saccharinum | Silver Maple |
| Acorus calamus | Sweet Flag |
| Alisma subcordatum | Southern Water-plantain |
| Alliaria petiolata | Garlic-mustard |
| Allium sp. | Wild Onion |
| Amaranthus tuberculatus | Amaranth |
| Ambrosia artemisiifolia | Common Ragweed |
| Ambrosia trifida | Giant Ragweed |
| Anthemis cotula | Dogfennel |
| Asclepias incarnata | Swamp Milkweed |
| Aster pilosus | Awl-aster |
| Aster spp. | Wild Aster |
| Bidens cernua | Bur-marigold |
| Bidens comosa | Strawstem Beggar-ticks |
| Bidens connata | Purplestem Beggar-ticks |
| Bidens frondosa | Devil’s Beggar-ticks |
| Bidens vulgata | Tall Beggar-ticks |
| Boehmeria cylindrica | False Nettle |
| Campanula americana | Tall Bellflower |
| Campsis radicans | Trumpet-creeper |
| Carex comosa | Bearded Sedge |
| Carex crinita | Sedge |
| Carex cristatella | Crested Sedge |
| Carex frankii | Frank’s Sedge |
| Carex lupulina | Hop Sedge |
| Carex sp. | Sedge |
| Carex stricta | Tussock Sedge |
| Carex tribuloides | Sedge |
| Carex vulpinoidea | Fox Sedge |
| Carya ovata | Shagbark Hickory |
| Celtis occidentalis | Northern Hackberry |
| Cephalanthus occidentalis | Buttonbush |
| Ceratophyllum demersum | Coontail |
| Cercis canadensis | Redbud |
| Cichorium intybus | Chicory |
| Cicuta maculata | Common Water-hemlock |
| Cirsium arvense | Canada Thistle |
| Cirsium muticum | Swamp Thistle |
| Convolvulus sepium | Bindweed |
| Cornus amomum | Knob-styled Dogwood |
| Cornus stolonifera | Red osier-dogwood |
| Crataegus sp. | Hawthorn |
| Cuscuta gronovii | Common Dodder |
| Cyperus esculentus | Yellow Nutsedge |
| Cyperus ferruginescens | Flatsedge |
| Daucus carota | Wild Carrot |
| Decodon verticillatus | Swamp Loosestrife |
| Echinochloa erusgalli | Barnyard-grass |
| Elymus riparius | Streambank Wild Rye |
| Elymus virginicus | Virginia Wild Rye |
| Epilobium coloratum | Eastern Willow-herb |
| Erigeron annuus | Annual Fleabane |
| Erigeron sp. | Daisy |
| Eupatorium perfoliatum | Common Boneset |
| Eupatorium rugosum | White Snakeroot |
| Fragaria virginiana | Wild Strawberry |
| Fragaria vesca | Thin-leaved Wild Strawberry |
| Fraxinus nigra | Black Ash |
| Fraxinus pennsylvanica | Green Ash |
| Galeopsis ladanum | Hemp-nettle |
| Galium sp. | Bedstraw |
| Galium tinctorium | Southern Three-lobed Bedstraw |
| Geum canadense | White Avens |
| Geum laciniatum | Rough Avens |
| Glechoma hederacea | Gill-over-the-ground |
| Glyceria septentrionalis | Eastern Mannagrass |
| Glyceria striata | Fowl-mannagrass |
| Hibiscus laevis | Halberd-leaved Rose Mallow |
| Impatiens capensis | Orange Touch-me-not |
| Ipomoea pandurata | Wild Potato |
| Iris pseudacorus | Yellow Flag |
| Iris versicolor | Northern Blue Flag |
| Juglans nigra | Black Walnut |
| Juncus effusus | Soft Rush |
| Juncus nodosus | Rush |
| Juncus tenuis | Path-rush |
| Leersia oryzoides | Rice cut-grass |
| Lemna minor | Lesser Duckweed |
| Lespedeza repens | Smooth Trailing Lespedeza |
| Lindernia dubia | False Pimpernel |
| Lobelia cardinalis | Cardinal Flower |
| Lobelia siphilitica | Great Lobelia |
| Lotus corniculatus | Birdsfoot-trefoil |
| Lycopus americanus | American Water-horehound |
| Lycopus virginicus | Bugleweed |
| Lythrum. alatum | Winged Loosestrife |
| Maclura pomifera | Osage-orange |
| Medicago lupulina | Black Medick |
| Menispermum canadense | Moonseed |
| Mentha arvenis | Field Mint |
| Mentha piperita | Peppermint |
| Mentha x citrata | Lemon Mint |
| Mimulus alatus | Winged Monkeyflower |
| Mimulus ringens | Allegheny Monkeyflower |
| Morus alba | White Mulberry |
| Nuphar advena | Yellow Pond Lily |
| Oenothera biennis | Common Evening-primrose |
| Oxalis europaea | Wood-sorel |
| Oxalis stricta | Common Yellow Wood-sorel |
| Parthenocissus quinquefolia | Virginia-creeper |
| Penthorum sedoides | Ditch Stone-crop |
| Phalaris arundinacea | Reed Canary-grass |
| Phytolacca americana | Pokeweed |
| Pilea pumila | Clearweed |
| Plantago major | Common Plantain |
| Poa alsodes | Bluegrass |
| Podophyllum pelatum | May-apple |
| Polygonum amphibium | Water Smartweed |
| Polygonum convolvulus | Black Bindweed |
| Polygonum hydropiperoides | Mild Water-pepper |
| Polygonum pensylvanicum | Pennsylvania Smartweed |
| Polygonum persicaria | Lady’s Thumb |
| Polygonum virginianum | Jumpseed |
| Populus deltoides | Cottonwood |
| Potamogeton epihydrus var. nuttallii | Ribbonleaf Pondweed |
| Potamogeton foliosus | Leafy Pondweed |
| Prunus serotina | Wild Black Cherry |
| Quercus bicolor | Swamp White Oak |
| Quercus rubra | Red Oak |
| Ranunculus flabellaris | Coastal plain Spearwort |
| Ranunculus sceleratus | Cursed Crowfoot |
| Rorippa palustris | Common Yellow-cress |
| Rosa multiflora | Multiflora-rose |
| Rosa palustris | Swamp-rose |
| Rubus allegheniensis | Common Blackberry |
| Rubus occidentalis | Black Raspberry |
| Rumex crispus | Curly Dock |
| Rumex verticillatus | Water Dock |
| Sagittaria latifolia | Common Arrow-head |
| Salix exigua | Sandbar Willow |
| Salix nigra | Black Willow |
| Samolus floribundus | Water-pimpernel |
| Sanicula gregaria | Cluster-sanicle |
| Scirpus atrovirens | Black Bulrush |
| Scirpus fiuviatilis | River Bulrush |
| Scutellaria lateriflora | Mad-dog Skullcap |
| Setaria faberi | Nodding Foxtail-grass |
| Setaria glauca | Yellow Foxtail-grass |
| Sium suave | Water-parsnip |
| Smilax hispida | Greenbriar |
| Solanum dulcamara | Bittersweet Nightshade |
| Solidago canadensis | Common Goldenrod |
| Sonchus arvensis | Sow-thistle |
| Sorghum halepense | Johnson-grass |
| Sparganium eurycarpum | Giant Bur-reed |
| Spirodela polyrhiza | Greater Duckweed |
| Stachys palustris | Hedge-nettle |
| Taraxicum officinale | Dandelion |
| Teucrium canadense | American Germander |
| Toxicodendron radicans | Common Poison-ivy |
| Trifolium pratense | Red Clover |
| Typha angustifolia | Narrow-leaved Cat-tail |
| Typha latifolia | Broad-leaved Cat-tail |
| Ulmus americana | American Elm |
| Ulmus rubra | Slippery Elm |
| Urtica procera | Stinging Nettle |
| Utricularia gibba | Humped Bladderwort |
| Utricularia vulgaris | Common Bladderwort |
| Verbascum thapsus | Common Mullein |
| Verbena urticifolia | White Vervain |
| Verbesina alternifolia | Wingstem |
| Veronica scutellata | Marsh Speedwell |
| Viola sororia | Common Blue Violet |
| Vitis aestivalis | Summer-grape |
| Vitis riparia | Riverbank Grape |
| Vitis vulpina | Frost-grape |
| Wolffia columbiana | Water-meal |
| Wolffia papulifera | Pointed Water-meal |