Complete list of species
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| scientific name | common name(s) | image gallery |
| Heuchera rubescens var. rubescens | Pink Alum-root Pink Alumroot | |
| Heuchera rubescens var. rydbergiana | Pink Alum-root Pink Alumroot | |
| Heuchera rubescens var. truncata | Pink Alum-root Pink Alumroot | |
| Heuchera rubescens var. versicolor | Pink Alumroot Alumroot | |
| Heuchera sanguinea | Coralbells New Mexican Coralbells Arizona Coralbells | |
| Heuchera sanguinea var. pulchra | Coralbells | |
| Heuchera sanguinea var. sanguinea | Coralbells | |
| Heuchera villosa | Hairy Alumroot | |
| Heuchera villosa var. arkansana | Arkansas Alum-root Arkansas Alumroot Hairy Alumroot Rough Heuchera | |
| Heuchera villosa var. villosa | Hairy Alumroot | |
| Heuchera woodsiaphila | Capitan Mountains Alumroot Capitan Mountains Alum-root | |
| Heuchera wootonii | White Mountain Alum-root White Mountain Alumroot Wooton's Alumroot | |
| Heuchera ×cuneata | Alum-root Alumroot | |
| Hexalectris arizonica | Spiked Crested Coralroot Arizona Crested Coral Root Arizona Crested Coral-root | |
| Hexalectris colemanii | Coleman's Coral Root Coleman's Crested Coralroot | |
| Hexalectris grandiflora | Largeflower Crested Coralroot Greenman's Hexalectris Giant Coral-root Greenman's Cock's-comb Largeflower Crested Coral Root | |
| Hexalectris nitida | Glass Mountain Crested Coralroot Glass Mountain Crested Coral Root | |
| Hexalectris revoluta | Chisos Mountain Crested Coralroot Correll’s Cock’s-comb Curly Coral Root Curly Coral-root | |
| Hexalectris spicata | Spiked Crested Coralroot Spiked Crested Coral Root | |
| Hexalectris spicata var. spicata | Spiked Crested Coralroot Spiked Crested Coral Root | |
| Hexalectris warnockii | Texas Crested Coralroot Texas Purple Spike Texas Crested Coral Root | |
| Hexastylis arifolia | Little Brown Jug Heartleaf Evergreen Wild Ginger | |
| Hexastylis arifolia var. arifolia | Heart-leaf Ginger Heart-leaf Little Brown Jug Little Brown Jug | |
| Hexastylis arifolia var. callifolia | Littlebrownjug Little Brown Jug | |
| Hexastylis arifolia var. ruthii | Ruth's Little Brown Jug | |
| Hexastylis contracta | Mountain Heartleaf | |
| Hexastylis heterophylla | Variable-leaf Heartleaf | |
| Hexastylis lewisii | Variableleaf Heartleaf | |
| Hexastylis minor | Little Heartleaf | |
| Hexastylis naniflora | Dwarfflower Hearleaf | |
| Hexastylis rhombiformis | French Broad Heartleaf North Fork Heartleaf | |
| Hexastylis shuttleworthii | Largeflower Heartleaf Shuttleworth's Ginger | |
| Hexastylis shuttleworthii var. harperi | Largeflower Heartleaf | |
| Hexastylis shuttleworthii var. shuttleworthii | Largeflower Heartleaf | |
| Hexastylis sorriei | Sandhills Heartleaf Sorrie's Heartleaf | |
| Hexastylis speciosa | Harper's Heartleaf Harper's Ginger | |
| Hexastylis virginica | Virginia Heartleaf | |
| Hibiscadelphus bombycinus | Hau Kuahiwi | |
| Hibiscadelphus crucibracteatus | Lava Hau Kuahiwi | |
| Hibiscadelphus distans | Hau Kuahiwi Kauai Hau Kuahiwi | |
| Hibiscadelphus giffardianus | Kilauea Hau Kuahiwi | |
| Hibiscadelphus hualalaiensis | Hau Kuahiwi Hualalai Hau Kuahiwi | |
| Hibiscadelphus stellatus | Stellar Hau Kuahiwi | |
| Hibiscadelphus wilderianus | Maui Hau Kuahiwi | |
| Hibiscadelphus woodii | Hau Kuahiwi Wood's Hau Kuahiwi | |
| Hibiscus aculeatus | Comfortroot Big Thicket Hibiscus Pineland Hibiscus | |
| Hibiscus arnottianus | ||
| Hibiscus arnottianus ssp. arnottianus | Aloalo Kokio Keokeo Oahu White Hibiscus White Rosemallow | |
| Hibiscus arnottianus ssp. immaculatus | Aloalo Kokio Keokeo Molokai White Hibiscus White Rosemallow | |
| Hibiscus arnottianus ssp. punaluuensis | Aloalo Kokio Keokeo Oahu White Hibiscus Punaluu Rosemallow Punaluu White Hibiscus | |
| Hibiscus biseptus | Arizona Rosemallow | |
| Hibiscus brackenridgei | Aloalo Brackenridge's Rosemallow Mao Hau Hele Native Yellow Hibiscus | |
| Hibiscus brackenridgei ssp. brackenridgei | Aloalo Brackenridge's Rosemallow Mao Hau Hele Native Yellow Hibiscus | |
| Hibiscus brackenridgei ssp. mokuleianus | Aloalo Mao Hau Hele Mokulei Rosemallow Native Yellow Hibiscus | |
| Hibiscus brackenridgei ssp. molokaianus | Aloalo Brackenridge's Rosemallow Mao Hau Hele Native Yellow Hibiscus | |
| Hibiscus clayi | Clay's Hibiscus Kokio Ula Red Kauai Rosemallow | |
| Hibiscus coccineus | Scarlet Rosemallow Crimson Rosemallow Wild Red Mallow Texas Star Hibiscus | |
| Hibiscus coulteri | Desert Rosemallow Desert Rose-mallow Coulter Hibiscus | |
| Hibiscus dasycalyx | Neches River Rosemallow Neches River Rose-mallow | |
| Hibiscus denudatus | Paleface Rock Hibiscus | |
| Hibiscus furcellatus | Akiohala Hau Hele Wai Linden-leaf Rose-mallow Lindenleaf Rosemallow | |
| Hibiscus furcellatus var. youngianus | Akiohala Hau Hele Wai Linden-leaf Rose-mallow Lindenleaf Rosemallow | |
| Hibiscus grandiflorus | Swamp Rose-mallow Pink Swamp Hibiscus Large-flowered Hibiscus | |
| Hibiscus kokio | Hawaiian Red Hibiscus Kokio Ula Maku Red Rosemallow | |
| Hibiscus kokio ssp. kokio | Hawaiian Red Hibiscus Kokio Ula Maku Red Rosemallow | |
| Hibiscus kokio ssp. saintjohnianus | Kokio Ula Maku St. John's Hhibiscus St. John's Rosemallow | |
| Hibiscus laevis | Halberdleaf Rosemallow Halberdleaf Hibiscus Scarlet Rose Mallow Halberd-leaved Hibiscus Halberd-leaved Rose-mallow | |
| Hibiscus lasiocarpos | Woolly Rose-mallow Woolly Mallow Rose-mallow False Cotton | |
| Hibiscus martianus | Heartleaf Rosemallow Tulipan Del Monte Heartleaf Hibiscus | |
| Hibiscus moscheutos | Crimson-eyed Rose-mallow Marshmallow Hibiscus | |
| Hibiscus poeppigii | Poeppig's Rose-mallow Poeppig's Rosemallow | |
| Hibiscus striatus | Striped Rosemallow | |
| Hibiscus striatus ssp. lambertianus | Striped Rosemallow | |
| Hibiscus waimeae | Aloalo Kauai White Hibiscus Kokio Keokeo White Kauai Rosemallow | |
| Hibiscus waimeae ssp. hannerae | Aloalo Kokio Keokeo Small Kauai White Hibiscus White Kauai Rosemallow | |
| Hibiscus waimeae ssp. waimeae | Aloalo Kauai White Hibiscus Kokio Keokeo White Kauai Rosemallow | |
| Hieracium albiflorum | White Flowered Hawkweed White Hawkweed | |
| Hieracium alpinum | Alpine Hawkweed | |
| Hieracium argutum | Southern Hawkweed | |
| Hieracium bolanderi | Bolander's Hawkweed | |
| Hieracium canadense | Canadian Hawkweed | |
| Hieracium canadense var. canadense | Canadian Hawkweed | |
| Hieracium carneum | Huachuca Hawkweed | |
| Hieracium cynoglossoides | Houndstongue Hawkweed | |
| Hieracium fendleri | Yellow Hawkweed | |
| Hieracium fendleri var. discolor | Yellow Hawkweed | |
| Hieracium fendleri var. fendleri | Yellow Hawkweed | |
| Hieracium fendleri var. mogollense | Mogollon Hawkweed | |
| Hieracium gracile | Alpine Hawkweed Slender Hawkweed | |
| Hieracium gracile var. alaskanum | Alaska Hawkweed | |
| Hieracium gracile var. detonsum | Low Alpine Hawkweed | |
| Hieracium gracile var. gracile | Slender Hawkweed | |
| Hieracium gracile var. yukonense | Yukon Hawkweed | |
| Hieracium greenei | Greene's Hawkweed | |
| Hieracium greenii | Maryland Hawkweed | |
| Hieracium gronovii | Queendevil | |
| Hieracium horridum | Prickly Hawkweed Shaggy Hawkweed | |
| Hieracium kalmii | Kalm's Hawkweed | |
| Hieracium kalmii var. fasciculatum | Canadian Hawkweed | |
| Hieracium kalmii var. kalmii | Kalm's Hawkweed | |
| scientific name | common name(s) | image gallery |
