Combination search
Looking for commercially available native plant species suitable to your state or region, try the Recommended Species page.
| scientific name | common name(s) | image gallery |
| Hydrophyllum occidentale | Western Waterleaf Squaw-lettuce Waterleaf | |
| Hydrolea quadrivalvis | Waterpod | |
| Hydrangea quercifolia | Oakleaf Hydrangea Oak-leaf Hydrangea | |
| Hydrocotyle ranunculoides | Floating Marshpennywort Floating Marsh-Pennywort Floating Marsh Pennywort Floating Pennyroyal | |
| Hymenoclea sandersonii | Sanderson's Burrobrush Sanderson's Cheesebush | |
| Hymenoclea salsola var. fasciculata | Burrobrush | |
| Hymenoclea salsola var. pentalepis | Burrobrush Five Scaled Burrobrush | |
| Hymenoclea salsola var. salsola | Burrobrush | |
| Hydrophyllum tenuipes | Pacific Waterleaf | |
| Hydrolea uniflora | Oneflower False Fiddleleaf | |
| Hybanthus verticillatus | Babyslippers Nodding Green Violet Green Violet | |
| Hydrophyllum virginianum | Virginia Waterleaf Eastern Waterleaf Shawnee Salad | |
| Hydrophyllum virginianum var. atranthum | Eastern Waterleaf | |
| Hydrophyllum virginianum var. virginianum | Eastern Waterleaf Virginia Waterleaf | |
| Hymenothrix wrightii | Wright's Thimblehead | |
| Iliamna bakeri | Baker's Globe Mallow Baker's Wild Hollyhock Baker’s Globemallow | |
| Illicium floridanum | Florida Anisetree Florida Anise Anise Tree Stinkbush | |
| Iliamna latibracteata | California Globe Mallow California Wild Hollyhock | |
| Iliamna longisepala | Long-sepal Globemallow Long-sepal Wild Hollyhock Longsepal Globemallow Longsepal Wild Hollyhock | |
| Iliamna rivularis | Streambank Wild Hollyhock Wild Hollyhock Mountain Globemallow | |
| Iliamna rivularis var. diversa | Streambank Globe-mallow Streambank Wild Hollyhock | |
| Iliamna rivularis var. rivularis | Kankakee Globe-mallow Kankakee Mallow Peter's Mountain Mallow Streambank Globe-mallow Streambank Wild Hollyhock | |
| Ionactis alpina | Lava Ankle-aster Lava Aster | |
| Ionactis caelestis | Spring Mountain Ankle-aster Spring Mountain Aster | |
| Ionactis elegans | Sierra Blanca Ankle-aster Sierra Blanca Least-Daisy | |
| Ionactis linariifolius | Flaxleaf Whitetop Aster Stiff Aster Flaxleaf Aster | |
| Iodanthus pinnatifidus | Purplerocket Purple Rocket Purple-rocket Violet-rocket | |
| Ionactis stenomeres | Rocky Mountain Ankle-aster Rocky Mountain Aster | |
| Ionopsis utricularioides | Delicate Ionopsis Delicate Violet Orchid | |
| Ipomoea barbatisepala | Canyon Morning-glory Canyon Morning Glory Canyon Morningglory | |
| Ipomoea capillacea | Purple Morning-glory Purple Morning Glory Purple Morningglory | |
| Ipomoea cordatotriloba | Tievine Purple Bindweed Morning Glory | |
| Ipomoea cordatotriloba var. cordatotriloba | Tievine Sharp-pod Morning Glory Purple Bindweed Tie Vine | |
| Ipomoea cordatotriloba var. torreyana | Torrey's Tievine | |
| Ipomoea dumetorum | Railwaycreeper Railway-creeper | |
| Ipomopsis globularis | Hoosier Pass Ipomopsis Globe Gilia Blue-head Gily-flower | |
| Ipomopsis gunnisonii | Sanddune Ipomopsis Sanddune Skyrocket Sand-dune Skyrocket | |
| Ipomoea leptophylla | Bush Morning-glory | |
| Ipomoea ×leucantha | Whitestar Morning-glory Whitestar Morning Glory Whitestar Morningglory | |
| Ipomoea lindheimeri | Lindheimer's Morning-glory Blue Morning Glory | |
| Ipomoea littoralis | Whiteflower Beach Morning-glory White-flower Beach Morning-glory Beach Morning Glory Hunakai | |
| Ipomoea longifolia | Pinkthroat Morning-glory Pinkthroat Morning Glory Pinkthroat Morningglory Pink-throat Morning-glory Longleaf Morning Glory | |
| Ipomopsis longiflora ssp. australis | Whiteflower Ipomopsis Whiteflower Skyrocket | |
| Ipomopsis longiflora ssp. longiflora | Flaxflowered Ipomopsis Flaxflowered Gilia Long Flowered Gilia | |
| Ipomopsis longiflora ssp. neomexicana | Flaxflowered Ipomopsis Flaxflowered Skyrocket | |
| Ipomoea macrorhiza | Largeroot Morning-glory Large Root Morning Glory Large-root Morning-glory Largeroot Morningglory Pink Moonvine | |
| Ipomopsis macombii | Macomb's Ipomopsis Macomb's Skyrocket | |
| Ipomopsis macrosiphon | Longtube Ipomopsis Large-tube Skyrocket Pink Skyrocket | |
| Ipomopsis minutiflora | Littleflower Ipomopsis Small-flowered Gilia Small-flower Skyrocket Small-flower Standing-cypress | |
| Ipomopsis multiflora | Manyflowered Ipomopsis Manyflowered Gilia Many-flower Gilia Many-flower Skyrocket | |
| Ipomoea pandurata | Man Of The Earth Wild Potato Wild Sweet Potato Manroot | |
| Ipomopsis pinnata | San Luis Mountain Ipomopsis Bent Flower Ipomopsis Bent-flowered Gilia San Luis Mountain Skyrocket | |
| Ipomoea plummerae | Huachuca Mountain Morning-glory Huachuca Mountain Morning Glory Huachuca Morningglory Plummer's Morning Glory | |
| Ipomopsis polyantha | Pagosa Ipomopsis | |
| Ipomopsis pumila | Dwarf Ipomopsis Dwarf Gilia Spotted Gilia Dwarf Skyrocket Low Skyrocket | |
| Ipomoea rupicola | Cliff Morning-glory Cliff Morning Glory Cliff Morningglory | |
| Ipomoea sagittata | Saltmarsh Morning-glory Salt-marsh Morning Glory | |
| Ipomoea shumardiana | Narrowleaf Morning-glory Narrow-leaf Morning-glory Narrowleaf Morningglory Narrow Leaf Morning Glory | |
| Ipomoea tenuiloba | Spiderleaf | |
| Ipomoea tenuissima | Rockland Morning-glory Rockland Morning Glory Rocklands Morning-glory | |
| Ipomopsis tenuituba | Slendertube Skyrocket | |
| Ipomoea ternifolia | Tripleleaf Morning-glory Tripleleaf Morning Glory Three-leaf Morning-glory | |
| Ipomoea tenuiloba var. lemmonii | Spiderleaf Lemmon's Morning-glory Lemmon's Morning Glory | |
| Ipomopsis tenuituba ssp. latiloba | Slendertube Skyrocket Slender-tube Skyrocket | |
| Ipomoea ternifolia var. leptotoma | Tripleleaf Morning-glory Tripleleaf Morning Glory Three-leaf Morning-glory | |
| Ipomopsis tenuituba ssp. tenuituba | Slendertube Skyrocket Slender-tube Skyrocket | |
| Ipomopsis thurberi | El Paso Skyrocket Thurber's Skyrocket Thurber's Gilia | |
| Ipomopsis wrightii | Leafy Skyrocket | |
| Iris bracteata | Siskiyou Iris | |
| Iris brevicaulis | Zigzag Iris | |
| Iris chrysophylla | Yellowleaf Iris | |
| Iris cristata | Dwarf Crested Iris | |
| Iris douglasiana | Douglas Iris Mountain Iris Western Iris | |
| Iris giganticaerulea | Giant Blue Iris Blue Flag | |
| Iris hartwegii | Rainbow Iris Sierra Iris | |
| Iris hartwegii ssp. australis | Rainbow Iris Sierra Iris Southern Hartweg's Iris | |
| Iris hartwegii ssp. hartwegii | Rainbow Iris Hartweg's Iris Sierra Iris | |
| Iris hexagona var. savannarum | Savanna Iris Anglepod Blueflag | |
| Iris innominata | Del Norte County Iris | |
| Iris lacustris | Dwarf Lake Iris | |
| Iris macrosiphon | Bowltube Iris Ground Iris | |
| Iris missouriensis | Rocky Mountain Iris Western Blue Flag | |
| Iris purdyi | Purdy's Iris | |
| Iris setosa | Beachhead Iris Beach-head Iris Wild Flag Iris Alaska Iris | |
| Iris setosa var. interior | Wild Flag | |
| Iris setosa var. setosa | Beachhead Iris | |
| Iris tenax | Toughleaf Iris Tough-leaf Iris Oregon Iris | |
| Iris tenuissima | Longtube Iris | |
| Iris tenuissima ssp. purdyiformis | Longtube Iris Purdy's Iris Slender Iris Slender Tubed Iris | |
| Iris tenax ssp. tenax | Oregon Flag Toughleaf Iris | |
| Iris tenuissima ssp. tenuissima | Longtube Iris Slender Iris | |
| Iris thompsonii | Thompson's Iris | |
| Iris tridentata | Savanna Iris | |
| Iris versicolor | Harlequin Blueflag Northern Blue Flag Large Blue Iris | |
| Iris virginica | Virginia Iris Great Blue Flag Southern Blue Flag | |
| Iris virginica var. shrevei | Shreve's Iris Virginia Iris Southern Blue Flag Blue Flag | |
| Iris virginica var. virginica | Virginia Iris Blue Flag Iris | |
| Isachne distichophylla | Ridgetop Bloodgrass 'Ohe Ridgetop Blood Grass | |
| Isodendrion laurifolium | Rockcliff Isodendrion | |
| Isodendrion longifolium | Longleaf Isodendrion | |
| scientific name | common name(s) | image gallery |
