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| Halicacabum Solanum Winter cherry | 4.61. | Hirundines Swallows | 2.47 |
| Halimus Sea purslane | 1.102. | Hirudo Leech | 6.32 |
| Harundo Reed | 1.96. | Hordeum Barley | 2.78 |
| Harundo Cypria Cypriot reed | 1.96. | Horminum Clary sage | 3.123 |
| Harundo vallatoria Marsh reed | 1.96. | Hyacinthus Hyacinth | 4.53 |
| Hastula regia Asphodel | 2.161. | Hydromeli Honey water | 5.8 |
| Hedera Ivy | 2.172. | Hydromelon Quince honey | 5.19 |
| Helenium 1. Elecampane (first) | 1.26. | Hydropiper Water pepper | 2.153 |
| Helenium alterum Elecampane (second) | 1.26. | Hyoscyamus Henbane | 4.59. 6.15 |
| Helioscopius Sun spurge | 4.146. | Hypecoon Horned cumin | 4.58 |
| 170 171 Heliotropium magnum Great heliotrope | 4.171. | Hypericum St. John's wort | 3.146 |
| Heliotropium parvum Small heliotrope | 4.171. | Hypocistis Cistus excrescence | 1.108 |
| Helleborum album White hellebore | 4.133. | Hyssopum Hyssop | 3.26 |
| Helleborum nigrum Black hellebore | 4.134. | A large, decorative initial I marks this entry. Iaspis Jasper | 5.93 |
| Helxine Pellitory | 4.31. 74. | Iberis Candytuft | 1.147 |
| Hemerocallis Day lily | 3.117. | Idea radix Ida root | 4.36 |
| Hemionitis Spleenwort | 3.129. | Ilex Holm oak | 1.120 |
| Herba sabina Savin | 1.87. | Indicum Indigo | 5.57 |
| Hieracium magnum Great hawkweed | 3.61. | Inguinalis Burdock | 4.105 |
| Hieracium parvum Small hawkweed | 3.61. | Intybus Chicory | 2.125 |
| Hippace Horse-milk cheese | 2.63. | Irio London rocket | 2.150 |
| Hippocampus Seahorse | 2.2. | Iris Iris | 1.1. |
| Hippoglosson Alexandrian laurel | 4.116. | Isopyrum Baneberry | 4.106 |
| Hippolapathon Monk's rhubarb | 2.107. | Iudaicus Lapis Jew stone | 5.93 |
| Hippophaës Sea buckthorn | 4.143. | Iuncus Rush | 4.42. |
| Hippophaeston Sea buckthorn variety | 4.144. | Iuncus odoratus Sweet rush | 1.16. |
| Hippopotami testes Hippopotamus testicles | 3.21. | Iuniperus Juniper | 1.86. |
| Hipposelinon Smyrnium | 3.62. | Ius piscium Fish sauce | 2.31 |
| Hirci barbula Goat's beard | 3.137. | Ixia Birdlime thistle | 3.8. 6.21 |
| Hircinum sevum Goat suet | 2.68. | A large, decorative initial L marks this section. Labrum Veneris Venus's basin/Teasel | 3.11 |
| Hirculus Goat-plant | 3.7. | Labrusca Wild vine | 5.2. |