| Common Name | Scientific Name | Code |
| n/a | Ilex buergeri Miq. | ILBU2 |
| n/a | Ilex crenata Thunb. var. paludosa (Nakai) H. Hara | ILCRP2 |
| n/a | Ilex goshiensis Hayata | ILGO2 |
| n/a | Ilex hexandra Bello [excluded] | ILHE2 |
| n/a | Ilex pedunculosa Miq. | ILPE2 |
| n/a | Ilex sugerokii Maxim. | ILSU2 |
| American holly | Ilex opaca Ait. | ILOP |
| American holly | Ilex opaca Ait. var. arenicola (Ashe) Ashe | ILOPA |
| American holly | Ilex opaca Ait. var. opaca | ILOPO |
| Caribbean holly | Ilex macfadyenii (Walp.) Rehd. | ILMA |
| Carolina holly | Ilex ambigua (Michx.) Torr. | ILAM |
| catberry | Ilex mucronata (L.) Powell, Savolainen & Andrews | ILMU |
| Chinese holly | Ilex cornuta Lindl. & Paxton | ILCO80 |
| common winterberry | Ilex verticillata (L.) Gray | ILVE |
| Cuthbert's holly | Ilex cuthbertii Small | ILCU3 |
| dahoon | Ilex cassine L. | ILCA |
| dahoon | Ilex cassine L. var. cassine | ILCAC |
| dahoon | Ilex cassine L. var. latifolia Ait. | ILCAL |
| English holly | Ilex aquifolium L. | ILAQ80 |
| Georgia holly | Ilex longipes Chapman ex Trel. | ILLO |
| gongolin | Ilex sideroxyloides (Sw.) Griseb. | ILSI |
| gongolin | Ilex sideroxyloides (Sw.) Griseb. var. occidentalis Loes. | ILSIO |
| gongolin | Ilex sideroxyloides (Sw.) Griseb. var. sideroxyloides | ILSIS |
| Hawai'i holly | Ilex anomala Hook. & Arn. | ILAN |
| holly | Ilex L. | ILEX |
| holly | Ilex sandwicensis (Endl.) Loes. | ILSA2 |
| holly | Ilex volkensiana (Loes.) Kanehira & Hatusima | ILVO2 |
| Ilex ambigua | Ilex beadlei Ashe | ILBE |
| Ilex ambigua | Ilex buswellii Small | ILBU |
| Ilex ambigua | Ilex caroliniana Trel. ex Small | ILCA2 |
| Ilex ambigua | Ilex montana Torr. & Gray ex Gray var. beadlei (Ashe) Fern. | ILMOB |
| Ilex ambigua | Ilex montana Torr. & Gray ex Gray var. mollis (Gray) Britt. | ILMOM |
| Ilex collina | Nemopanthus collinus (Alexander) R. Clark | NECO6 |
| Ilex cornuta | Ilex cornuta Lindl. & Paxton var. burfordii De France | ILCOB2 |
| Ilex decidua | Ilex curtissii (Fern.) Small | ILCU2 |
| Ilex decidua | Ilex decidua Walt. var. curtissii Fern. | ILDEC |
| Ilex longipes | Ilex decidua Walt. var. longipes (Chapman ex Trel.) Ahles | ILDEL |
| Ilex longipes | Ilex longipes Chapman ex Trel. var. hirsuta Lundell | ILLOH |
| Ilex macfadyenii | Prinos macfadyenii Walp. | PRMA10 |
| Ilex montana | Ilex ambigua (Michx.) Torr. var. montana (Torr. & Gray ex Gray) Ahles | ILAMM |
| Ilex montana | Ilex ambigua (Michx.) Torr. var. monticola (Wood) Wunderlin & Poppleton | ILAMM3 |
| Ilex montana | Ilex amelanchier M.A. Curtis ex Chapman var. monticola Wood | ILAMM2 |
| Ilex montana | Ilex monticola Gray | ILMO3 |
| Ilex mucronata | Nemopanthus mucronatus (L.) Loes. | NEMU2 |
| Ilex mucronata | Vaccinium mucronatum L. | VAMU2 |
| Ilex myrtifolia | Ilex cassine L. var. myrtifolia (Walt.) Sarg. | ILCAM |
| Ilex nitida | Prinos nitidus Vahl | PRNI2 |
| Ilex opaca var. arenicola | Ilex arenicola Ashe | ILAR |
| Ilex opaca var. arenicola | Ilex cumulicola Small | ILCU |
| Ilex opaca var. arenicola | Ilex pygmaea McFarlin | ILPY |
| Ilex paraguariensis | Ilex paraguayensis St.-Hil. [orthographic error] | ILPA2 |
| Ilex urbaniana var. riedlaei | Ilex riedlaei Loes. | ILRI3 |
| Ilex verticillata | Ilex bronxensis Britt. | ILBR |
| Ilex verticillata | Ilex fastigiata Bickn. | ILFA |
| Ilex verticillata | Ilex verticillata (L.) Gray var. cyclophylla B.L. Robins. | ILVEC |
| Ilex verticillata | Ilex verticillata (L.) Gray var. fastigiata (Bickn.) Fern. | ILVEF |
| Ilex verticillata | Ilex verticillata (L.) Gray var. padifolia (Willd.) Torr. & Gray ex S. Wats. | ILVEP |
| Ilex verticillata | Ilex verticillata (L.) Gray var. tenuifolia (Torr.) S. Wats. | ILVET |
| inkberry | Ilex glabra (L.) Gray | ILGL |
| Japanese holly | Ilex crenata Thunb. | ILCR2 |
| Kurogane holly | Ilex rotunda Thunb. | ILRO2 |
| large gallberry | Ilex coriacea (Pursh) Chapman | ILCO |
| longstalk holly | Ilex collina Alexander | ILCO2 |
| Luquillo Mountain holly | Ilex hypaneura Loes. | ILHY |
| maconcona | Ilex guianensis (Aubl.) Kuntze | ILGU |
| mate | Ilex paraguariensis St.-Hil. | ILPA3 |
| mountain holly | Ilex montana Torr. & Gray ex Gray | ILMO |
| myrtle dahoon | Ilex myrtifolia Walt. | ILMY |
| nemopanthus | Nemopanthus Raf. | NEMOP2 |
| possumhaw | Ilex decidua Walt. | ILDE |
| Puerto Rico holly | Ilex nitida (Vahl) Maxim. | ILNI |
| sarvis holly | Ilex amelanchier M.A. Curtis ex Chapman | ILAM2 |
| Sintenis's holly | Ilex sintenisii (Urban) Britt. | ILSI2 |
| smooth winterberry | Ilex laevigata (Pursh) Gray | ILLA |
| tawnyberry holly | Ilex krugiana Loes. | ILKR |
| te | Ilex cookii Britt. & P. Wilson | ILCO3 |
| topal holly | Ilex ?attenuata Ashe [cassine ? opaca] | ILAT |
| Urban's holly | Ilex urbaniana Loes. | ILUR |
| Urban's holly | Ilex urbaniana Loes. var. riedlaei (Loes.) Edwin | ILURR |
| Urban's holly | Ilex urbaniana Loes. var. urbaniana | ILURU |
| yaupon | Ilex vomitoria Ait. | ILVO |