L
| A | B | |
| Leontopodium alpinum | 9 | |
| Leontopodium alpinum ssp nivale | 11 | |
| Leontopodium caoacephalum | 30 | |
| Leontopodium dedekensii | 7 | |
| Leontopodium discolor | 7 | |
| Leontopodium fedtchenkoanum | 8 | |
| Leontopodium hayachinense | 12 | |
| Leontopodium nanum | 14 | |
| Leontopodium nivale ssp nivale | 15 | |
| Leontopodium ochroleucum v campestre | 14 | |
| Leontopodium palaban | 21 | |
| Leontopodium pusillum | 8 | |
| Leontopodium stracheyi | 8 | |
| Lepidium nanum | 4 | |
| Lesquerella alpina ssp parvula | 5 | |
| Lesquerella ovalifoila | 13 | |
| Lesquerella paysonii | 6 | |
| Lesquerella tumulosa | 8 | |
| Leucanthemum x superbum | 9 | |
| Lewisia brachycalyx | 10 | |
| Lewisia columbiana | 17 | |
| Lewisia cotyledon | 13 | |
| Lewisia glandulosa | 20 | |
| Lewisia leeana | 10 | |
| Lewisia oppositifolia | 5 | |
| Lewisia pygmaea x rediviva | 4 | |
| Lewisia redivia | 7 | |
| Lewisia sierrae | 14 | |
| Lewisia tweedyii | 13 | |
| Leychesteria formosa | 17 | |
| Lianthastrum nuttallii | 1 | |
| Ligualria vorobievi | 9 | |
| Ligularia altaica | 12 | |
| Ligularia alpigena | 8 | |
| Liguaria amplectens v holmii | 7 | |
| Ligularia dentata 'Othello' | 11 | |
| Ligularia hodgesonii | 15 | |
| Ligularia holmii | 9 | |
| Ligularia przewaldskii | 9 | |
| Ligularia sibirica | 7 | |
| Ligularia soldanealla | 10 | |
| Ligularia veitchiana | 12 | |
| Ligularia vella | 10 | |
| Ligularia wilsoniana | 7 | |
| Lilium dumilium | 12 | |
| Lilium formosanum v. pricei | 15 | |
| Lilium hansonii | 29 | |
| Lilium lankongense | 30 | |
| Lilium leucanthum var centifolium | 15 | |
| Lilium leichtlinii | 17 | |
| Lilium mackliniae | 10 | |
| Lilium marthagon | 81 | |
| Lilium monadelphum | 34 | |
| Lilium nanum | 20 | |
| Lilium nepalense | 23 | |
| Lilium oxypetalum insigne | 31 | |
| Lilium philippense | 22 | |
| Lilium pumilum | 15 | 37 |
| Lilium taliense | 20 | |
| Lilium wardii | 16 | |
| Lloydia oxypetala | 25 | |
| Limonium binevrosum | 8 | |
| Limonium psidocladum | 9 | |
| Linaria supina | 7 | |
| Linum perenne alpinum | 10 | |
| Lloydia oxycarpa | 21 | |
| Lupinus arcticus | 7 | |
| Lupinus 'Cherry Pink' | 17 | |
| Lupinus nootkatensis | 5 | |
| Lupinus polyphyllus 'Chandelia' | 5 | |
| Lupinus polyphyllus | 6 | |
| Lychnis alpina | 7 | |
| Lychnis flos-cuculi nana | 11 | |
| Lychnis fulgens |
|