| Scientific Name |
Common Name |
Native Status |
|
|
|
|
|
Iberis amara Linnaeus
|
Annual Candytuft |
I |
|
Ilex aquifolium L.
|
English Holly |
I |
|
Ilex collina Alexander
|
Long-stalked Holly |
N |
|
Ilex coriacea (Pursh) chapman
|
Sweet Gallberry, Big Gallberry |
N |
|
Ilex cornuta Lindley
|
Chinese Holly, Burford Holly |
I |
|
Ilex crenata Thunberg
|
Japanese Holly |
I |
|
Ilex decidua Walt.
|
Deciduous Holly, Possum-haw |
N |
|
Ilex glabra (L.) Gray
|
Inkberry |
N |
|
Ilex laevigata (Pursh) Gray
|
Smooth Winterberry |
N |
|
Ilex montana Torr. & Gray ex Gray
|
Mountain Holly |
N |
|
Ilex opaca Aiton var. opaca
|
American Holly |
N |
|
Ilex verticillata (L.) Gray
|
Winterberry |
N |
|
Ilex vomitoria Aiton
|
Yaupon |
N |
|
Iliamna corei Sherff
|
Peter's Mountain Mallow |
N |
|
Iliamna remota Greene
|
Kankakee Mallow, Kankakee Globe-mallow |
N |
|
Imbribryum gemmiparum ((De. Not.) J.R. Spence & H.P. Ramsay
|
|
N |
|
Impatiens balsamina L.
|
Garden Balsam |
I |
|
Impatiens capensis Meerburg
|
Orange Jewelweed, Spotted Jewelweed |
N |
|
Impatiens pallida Nuttall
|
Yellow Jewelweed, Pale Jewelweed |
N |
|
Imperata cylindrica (L.) Beauv.
|
Cogongrass, Brazilian Satintail |
I |
|
Inula helenium L.
|
Elecampane |
I |
|
Ionactis linariifolia (L.) Greene
|
Stiff-leaved Aster |
N |
|
Ipomoea coccinea L.
|
Red Morning Glory, Scarlet Creeper |
|
|
Ipomoea hederacea Jacq.
|
Ivy-leaf Morning Glory |
I |
|
Ipomoea lacunosa L.
|
Small White Morning Glory |
N |
|
Ipomoea pandurata (L.) G.F.W. Mey.
|
Wild Potato-vine, Manroot, Man-of-the-earth |
N |
|
Ipomoea purpurea (L.) Roth
|
Common Morning Glory |
I |
|
Ipomoea quamoclit L.
|
Cypress-vine |
I |
|
Ipomoea triloba L.
|
Little-bell |
I |
|
Ipomopsis rubra (L.) Wherry
|
Standing-cypress |
I |
|
Iresine rhizomatosa Standley
|
Eastern Bloodleaf, Juda's Bush |
N |
|
Iris cristata Solander ex Aiton
|
Dwarf Crested Iris |
N |
|
Iris domestica (Linnaeus) Goldblatt & Mabberley
|
Blackberry-lily |
I |
|
Iris germanica L.
|
German Iris |
I |
|
Iris prismatica Pursh
|
Slender Blue Iris, Slender Blue Flag |
N |
|
Iris pseudacorus L.
|
Yellow Iris, Yellow Flag |
I |
|
Iris sibirica L.
|
Sibirian Iris |
I |
|
Iris verna L.
|
Dwarf Iris |
N |
|
Iris verna L. var. smalliana Fernald ex M.E. Edwards
|
Upland Dwarf Iris |
N |
|
Iris verna L. var. verna
|
Coastal Plain Dwarf Iris |
N |
|
Iris versicolor L.
|
Larger Blue Flag, Northern Blue Flag |
N |
|
Iris virginica L.
|
Virginia Blue Flag, Southern Blue Flag |
N |
|
Isatis tinctoria Linnaeus
|
Dyer's Woad |
I |
|
Isoetes appalachiana Brunton and Britton
|
Appalachian Quillwort |
N |
|
Isoetes engelmannii A. Braun
|
Engelmann's Quillwort |
N |
|
Isoetes hyemalis Brunton
|
Winter Quillwort |
N |
|
Isoetes lacustris L.
|
Lake Quillwort |
N |
|
Isoetes mattaponica Musselman & W.C. Taylor
|
Mattaponi Quillwort |
N |
|
Isoetes melanopoda Gay & Durieu ssp. silvatica Brunton & Britton
|
Black-footed Quillwort |
N |
|
Isoetes piedmontana (N.E. Pfeiffer) C.F. Reed
|
Piedmont Quillwort |
N |
|
Isoetes riparia Engelm. ex A. Braun
|
Shore Quillwort |
N |
|
Isoetes valida (Engelm.) Clute
|
Mountain Quillwort |
N |
|
Isoetes virginica N.E. Pfeiffer
|
Virginia Quillwort |
N |
|
Isoetes × altonharvillii Musselman & Bray
|
|
N |
|
Isoetes × bruntonii Knepper & Musselman
|
|
N |
|
Isoetes × carltaylori Musselman
|
|
N |
|
Isoetes × fairbrothersii Montgomery & Taylor?
|
|
N |
|
Isolepis carinata Hook. & Arnott ex Torr.
|
Keeled Bulrush |
|
|
Isolepis hystrix (Thunb.) Nees
|
Bottlebrush Bulrush |
I |
|
Isopaches bicrenatus (Schmidel ex Hoffm.) H. Buch var. bicrenatus
|
|
N |
|
Isopterygiopsis muelleriana (Schimp.) Z. Iwats.
|
|
N |
|
Isopterygiopsis pulchella (Hedw.) Z. Iwats.
|
|
N |
|
Isopterygium tenerum (Sw.) Mitt.
|
|
N |
|
Isothecium myosuroides Brid.
|
|
N |
|
Isotrema macrophyllum (Lam.) C.F. Reed
|
Dutchman's-pipe, Pipevine |
N |
|
Isotria medeoloides (Pursh) Raf.
|
Small Whorled Pogonia |
N |
|
Isotria verticillata (Muhl. ex Willd.) Raf.
|
Large Whorled Pogonia |
N |
|
Itea virginica L.
|
Virginia-willow, Virginia Sweetspire |
N |
|
Iva annua L.
|
Annual Marsh-elder, Sumpweed |
I |
|
Iva frutescens L.
|
Marsh-elder |
N |
|
Iva imbricata Walt.
|
Dune Marsh-elder, Seaside Marsh-elder |
N |