.
| Genus | |
|---|---|
| 
                                                
                                                
                                                 | 
                                            Haageocereus Backeb. | 
| Haagespostoa G.D. Rowley | |
| Haastia Hook.f. | |
| 
                                                
                                                
                                                 | 
                                            Haemanthus L. | 
| 
                                                
                                                
                                                 | 
                                            Haematoxylum L. | 
| Hagenbachia Nees & Mart. | |
| 
                                                
                                                
                                                 | 
                                            Hakea Schrad. & J.C.Wendl. | 
| 
                                                
                                                
                                                 | 
                                            Halerpestes Greene | 
| 
                                                
                                                
                                                 | 
                                            Halesia J.Ellis ex L. | 
| Hallianthus H.E.K.Hartmann | |
| Halopeplis Bunge ex Ung.-Sternb. | |
| 
                                                
                                                
                                                 | 
                                            Halophytum Speg. | 
| 
                                                
                                                
                                                 | 
                                            Hamadryas Comm. | 
| 
                                                
                                                
                                                 | 
                                            Hamamelis L. | 
| 
                                                
                                                
                                                 | 
                                            Haplophyllum A.Juss. | 
| Harpagophytum | |
| 
                                                
                                                
                                                 | 
                                            Harrisia Britton | 
| Harrisinopsis G.D.Rowley | |
| Hartmanthus S.A. Hammer | |
| Hasteola Raf. | |
| Hastingsia S.Watson | |
| 
                                                
                                                
                                                 | 
                                            Hatiora Britton & Rose | 
| Hauya DC. | |
| 
                                                
                                                
                                                 | 
                                            Haymondia A.N.Egan & B.Pan bis | 
| 
                                                
                                                
                                                 | 
                                            Hebecarpa (Chodat) J.R.Abbott | 
| Heberdenia Banks ex A.DC. | |
| 
                                                
                                                
                                                 | 
                                            Hechtia Klotzsch | 
| 
                                                
                                                
                                                 | 
                                            Hedera L. | 
| 
                                                
                                                
                                                 | 
                                            Hedychium J.Koenig | 
| Hedyotis L. | |
| 
                                                
                                                
                                                 | 
                                            Hedysarum L. | 
| 
                                                
                                                
                                                 | 
                                            Helenium L. | 
| 
                                                
                                                
                                                 | 
                                            Helianthemum Mill. | 
| 
                                                
                                                
                                                 | 
                                            Helianthus L. | 
| 
                                                
                                                
                                                 | 
                                            Helichrysum Mill. | 
| 
                                                
                                                
                                                 | 
                                            Helicia Lour. | 
| Heliciopsis Sleumer | |
| 
                                                
                                                
                                                 | 
                                            Helicodiceros Schott ex K.Koch | 
| 
                                                
                                                
                                                 | 
                                            Heliconia L. | 
| 
                                                
                                                
                                                 | 
                                            Helicostylis Trécul | 
| 
                                                
                                                
                                                 | 
                                            Helicteres Pluk. ex L. | 
| 
                                                
                                                
                                                 | 
                                            Heliopsis Pers. | 
| 
                                                
                                                
                                                 | 
                                            Helleborus Tourn. ex L. | 
| Hellenia Retz. | |
| 
                                                
                                                
                                                 | 
                                            Helminthostachys Kaulf. | 
| 
                                                
                                                
                                                 | 
                                            Helonias L. | 
| 
                                                
                                                
                                                 | 
                                            Helosis Rich. | 
| 
                                                
                                                
                                                 | 
                                            Helwingia Willd. | 
| 
                                                
                                                
                                                 | 
                                            Hemerocallis L. | 
| Hemionitis L. | |
| Hemiphylacus S.Watson | |
| 
                                                
                                                
                                                 | 
                                            Henckelia Spreng. | 
| 
                                                
                                                
                                                 | 
                                            Hepatica Mill. | 
| 
                                                
                                                
                                                 | 
                                            Herbertia Sweet | 
| Hereroa (Schwantes) Dinter & Schwantes | |
| 
                                                
                                                
                                                 | 
                                            Herrania Goudot | 
| Herreria Ruiz & Pav. | |
| Herreriopsis H.Perrier | |
| Hertia Less. | |
| Hesperaloe Engelm. | |
| 
                                                
                                                
                                                 | 
                                            Hesperantha Ker Gawl. | 
| 
                                                
                                                
                                                 | 
                                            Hesperis L. | 
| Hesperocallis A.Gray | |
| 
                                                
                                                
                                                 | 
                                            Hesperocodon Eddie & Cupido | 
| Hesperoyucca (Engelm.) Trel. | |
| Heteranthemis Schott | |
| 
                                                
                                                
                                                 | 
                                            Heteranthera Ruiz & Pav. | 
| 
                                                
                                                
                                                 | 
                                            Heterocentron Hook. & Arn. | 
| 
                                                
                                                
                                                 | 
                                            Heteropolygonatum M.N.Tamura & Ogisu | 
| 
                                                
                                                
                                                 | 
                                            Heterostemma Wight & Arn. | 
| 
                                                
                                                
                                                 | 
                                            Heterotheca Cass. | 
| 
                                                
                                                
                                                 | 
                                            Hexaphylla (Klokov) P.Caputo & Del Guacchio | 
| 
                                                
                                                
                                                 | 
                                            Hibiscus L. | 
| Hicksbeachia F.Muell. | |
| 
                                                
                                                
                                                 | 
                                            Hieracium L. | 
| 
                                                
                                                
                                                 | 
                                            Hippeastrum Herb. | 
| 
                                                
                                                
                                                 | 
                                            Hippobroma G.Don | 
| 
                                                
                                                
                                                 | 
                                            Hippocrepis L. | 
| 
                                                
                                                
                                                 | 
                                            Hippolytia Poljakov | 
| 
                                                
                                                
                                                 | 
                                            Hippomane L. | 
| 
                                                
                                                
                                                 | 
                                            Hirpicium Cass. | 
| 
                                                
                                                
                                                 | 
                                            Hohenbergia Schult. & Schult.f. in J.J.Roemer & J.A.Schultes | 
| Hohenbergiopsis L.B.Sm. & Read | |
| Hohenmea B.R.Silva & L.F.Sousa | |
| Hollandaea F.Muell. | |
| 
                                                
                                                
                                                 | 
                                            Homalomena Schott | 
| Homogyne Cass. | |
| 
                                                
                                                
                                                 | 
                                            Hoodia Sweet ex Decne. | 
| 
                                                
                                                
                                                 | 
                                            Hoodiapelia G.D.Rowley | 
| Hoplocryptanthus (Mez) Leme | |
| 
                                                
                                                
                                                 | 
                                            Hordeum L. | 
| 
                                                
                                                
                                                 | 
                                            Hornstedtia Retz. | 
| 
                                                
                                                
                                                 | 
                                            Hosta Tratt. | 
| 
                                                
                                                
                                                 | 
                                            Hottarum Bogner & Nicolson | 
| 
                                                
                                                
                                                 | 
                                            Hottonia Boerh. ex L. | 
| 
                                                
                                                
                                                 | 
                                            Houstonia Gronov. | 
| 
                                                
                                                
                                                 | 
                                            Houttuynia Thunb. | 
| 
                                                
                                                
                                                 | 
                                            Hoya R.Br. | 
| 
                                                
                                                
                                                 | 
                                            Huernia R.Br. | 
| 
                                                
                                                
                                                 | 
                                            Hunnemannia Sweet | 
| 
                                                
                                                
                                                 | 
                                            Huperzia Bernh. | 
| Huynhia Greuter | |
| 
                                                
                                                
                                                 | 
                                            Hyacinthella Schur | 
| 
                                                
                                                
                                                 | 
                                            Hyacinthoides Heist. ex Fabr. | 
| 
                                                
                                                
                                                 | 
                                            Hyacinthus Tourn. ex L. | 
| 
                                                
                                                
                                                 | 
                                            Hyalis D.Don ex Hook. & Arn. | 
| 
                                                
                                                
                                                 | 
                                            Hybanthus Jacq. | 
| 
                                                
                                                
                                                 | 
                                            Hydnophytum Jack | 
| 
                                                
                                                
                                                 | 
                                            Hydnora Thunb. | 
| 
                                                
                                                
                                                 | 
                                            Hydrangea Gronov. ex L. | 
| 
                                                
                                                
                                                 | 
                                            Hydrastis J.Ellis | 
| 
                                                
                                                
                                                 | 
                                            Hydrocera Blume | 
| 
                                                
                                                
                                                 | 
                                            Hydrophyllum L. | 
| Hylandia Airy Shaw | |
| Hylocereus (A. Berger) Britton & Rose | |
| 
                                                
                                                
                                                 | 
                                            Hylomecon Maxim. | 
| 
                                                
                                                
                                                 | 
                                            Hylotelephium H.Ohba | 
| Hymenandra A.DC. | |
| 
                                                
                                                
                                                 | 
                                            Hymenasplenium Hayata | 
| Hymenidium Lindl. | |
| 
                                                
                                                
                                                 | 
                                            Hymenocallis Salisb. | 
| Hymenogyne Haw. | |
| 
                                                
                                                
                                                 | 
                                            Hymenolaena DC. | 
| 
                                                
                                                
                                                 | 
                                            Hymenoxys Cass. | 
| 
                                                
                                                
                                                 | 
                                            Hyoscyamus L. | 
| 
                                                
                                                
                                                 | 
                                            Hypecoum Tourn. ex L. | 
| 
                                                
                                                
                                                 | 
                                            Hypericum Tourn. ex L. | 
| 
                                                
                                                
                                                 | 
                                            Hypochaeris L. | 
| Hypoxis L. | |
| Hypseocharis J. Remy | |
| 
                                                
                                                
                                                 | 
                                            Hyptis Jacq. | 
| 
                                                
                                                
                                                 | 
                                            Hysterionica Willd. |