| Accepted Latin Names | Common Name | In Kent? | Type | Kent ref. | Status | Authority | Record No. |
|---|---|---|---|---|---|---|---|
| Lablab purpureus | Lablab-bean | Clement | A3 | 77--LAB--pur | (L.) Sweet | 0920006792 | |
| Laburnum alpinum | Scottish Laburnum | Yes | A1 | 77--22--2 | Ne | (Mill.) J.S. Presl | 0920002668 |
| Laburnum anagyroides | Laburnum | Page 47 | A1 | 77--22--1 | Ne | Medik. | 0920001091 |
| Laburnum anagyroides x alpinum = L. x watereri | Yes | A1 | 77--22--1 x 2 | Ne | (Wettst.) Dippel | 0920007425 | |
| Lactuca perennis | Mountain Lettuce | Clement | A3 | 135--22--per | L. | 0920006793 | |
| Lactuca saligna | Least Lettuce | Yes | A1 | 135--22--3 | N | L. | 0920001092 |
| Lactuca sativa | Garden Lettuce | Stace | A2 | 135--22--sat | Ca | L. | 0920001093 |
| Lactuca serriola | Prickly Lettuce | Page 47 | A1 | 135--22--1 | Ar | L. | 0920001094 |
| Lactuca tatarica | Blue Lettuce | Yes | A1 | 135--22--4 | Ne | (L.) C.A. Mey. | 0920004431 |
| Lactuca viminea | Pliant Lettuce | Clement | A3 | 135--22--vim | (L.) J. Presl & C. Presl | 0920006794 | |
| Lactuca virosa | Great Lettuce | Page 47 | A1 | 135--22--2 | N | L. | 0920001095 |
| Lagarosiphon major | Curly Waterweed | Yes | A1 | 138--6--1 | Ne | (Ridl.) Moss ex V.A. Wager | 0920001096 |
| Lagenaria siceraria | White-flowered Gourd | Clement | A3 | 60--LAG--sic | (Molina) Standl. | 0920004075 | |
| Lagurus ovatus | Hare's-tail | Yes | A1 | 153--43--1 | Ne | L. | 0920001097 |
| Lallemantia iberica | Clement | A3 | 118--LAL--ibe | (M. Bieb.) Fisch. & C.A. Mey. | 0920006795 | ||
| Lallemantia peltata | Clement | A3 | 118--LAL--pel | (L.) Fisch. & C.A. Mey. | 0920006796 | ||
| Lamarckia aurea | Golden Dog's-tail | Stace | A2 | 153--LAM--aur | Ca | Moench | 0920008104 |
| Lamiastrum galeobdolon | Yellow Archangel | Page 47 | A1 | 118--4--1 | (L.) Ehrend. & Polatschek | 0920000862 | |
| Lamiastrum galeobdolon subsp. argentatum | Yes | A1 | 118--4--1--c | Ne | (Smejkal) Stace | 0920002667 | |
| Lamiastrum galeobdolon subsp. galeobdolon | Yes | A1 | 118--4--1--a | N | 0920000862.1 | ||
| Lamiastrum galeobdolon subsp. montanum | Yes | A1 | 118--4--1--b | N | (Pers.) Ehrend. & Polatschek | 0920000862.2 | |
| Lamium album | White Dead-nettle | Page 47 | A1 | 118--5--1 | Ar | L. | 0920001098 |
| Lamium amplexicaule | Henbit Dead-nettle | Page 47 | A1 | 118--5--6 | Ar | L. | 0920001099 |
| Lamium bifidum | Clement | A3 | 118--5--bif | Cirillo | 0920006797 | ||
| Lamium confertum | Northern Dead-nettle | Yes | A1 | 118--5--5 | Ar | Fr. | 0920001102 |
| Lamium garganicum | Clement | A3 | 118--5--gar | L. | 0920006798 | ||
| Lamium hybridum | Cut-leaved Dead-nettle | Page 47 | A1 | 118--5--4 | Ar | Vill. | 0920001100 |
| Lamium maculatum | Spotted Dead-nettle | Page 47 | A1 | 118--5--2 | Ne | (L.) L. | 0920001101 |
| Lamium orvala | Balm-leaved Archangel | Clement | A3 | 118--5--orv | L. | 0920006799 | |
| Lamium purpureum | Red Dead-nettle | Page 45 | A1 | 118--5--3 | Ar | L. | 0920001103 |
| Lampranthus conspicuus | Clement | A3 | 42--3--con | (Haw.) N.E. Br. | 0920008105 | ||
| Lampranthus falciformis | Sickle-leaved Dewplant | Yes | A1 | 42--3--1 | Ne | (Haw.) N.E. Br. | 0920002390 |
| Lampranthus roseus | Rosy Dewplant | Yes | A1 | 42--3--2 | Ne | (Willd.) Schwantes | 0920002391 |
| Lampranthus scaber | Clement | A3 | 42--3--sca | (L.) N.E. Br. | 0920008106 | ||
| Lampranthus spectabilis | Clement | A3 | 42--3--spe | (Haw.) N.E. Br. | 0920004224 | ||
| Lamprocapnos spectabilis | Asian Bleeding-heart | Clement | A3 | 31--LAM--spe | (L.) Fukuhara | 0920008041 | |
| Lappula deflexa | Nodding Stickseed | Clement | A3 | 116--LAP--def | (Wahlenb.) Garcke | 0920006800 | |
| Lappula echinophora | Clement | A3 | 116--LAP--ech | (Pall.) Kuntze | 0920006801 | ||
| Lappula marginata | Clement | A3 | 116--LAP--mar | (M. Bieb.) Grke | 0920006802 | ||
| Lappula squarrosa | Bur Forget-me-not | Stace | A2 | 116--LAP--squ | Ca | (Retz.) Dumort. | 0920002260 |
| Lappula szovitsiana | Clement | A3 | 116--LAP--szo | (Fisch. & C.A. Mey.) Druce | 0920006803 | ||
| Lapsana communis | Nipplewort | Page 47 | A1 | 135--14--1 | ?N | L. | 0920001104 |
| Lapsana communis subsp. communis | Yes | A1 | 135--14--1--a | 0920001104.1 | |||
| Lapsana communis subsp. intermedia | Yes | A1 | 135--14--1--b | Ne | (M. Bieb.) Hayek | 0920001104.2 | |
| Larix decidua | European Larch | Yes | A1 | 20--5--1 | Ne | Mill. | 0920001105 |
| Larix decidua x kaempferi = L. x marschlinsii | Hybrid Larch | Yes | A1 | 20--5--1 x 2 | Ne | Coaz | 0920002303 |
| Larix gmelinii | Dahurian Larch | Clement | A3 | 20--5--gme | (Rupr.) Rupr. ex Kuzen. | 0920003632 | |
| Larix kaempferi | Japanese Larch | Yes | A1 | 20--5--2 | Ne | (Lamb.) CarriŠre | 0920002302 |
| Larix laricina | American Larch | Clement | A3 | 20--5--lar | (Du Roi) K. Koch | 0920003634 | |
| Laser trilobum | Laser | Clement | A3 | 107--LAS--tri | (L.) Borkh. | 0920008107 | |
| Laserpitium latifolium | Broad-leaved Sermountain | Clement | A3 | 107--LPI--lat | L. | 0920006804 | |
| Lasiospermum bipinnatum | Royal Down-flower | Clement | A3 | 135--LAS--bip | (Thunb.) Druce | 0920006805 | |
| Lasthenia glabrata | Yellow-rayed Lasthenia | Clement | A3 | 135--LAT--gla | Lindl. | 0920006806 | |
| Lasthenia platycarpha | Alkali Goldfields | Clement | A3 | 135--LAT--pla | (A. Gray) Greene | 0920006807 | |
| Lathraea clandestina | Purple Toothwort | Yes | A1 | 125--1--2 | Ne | L. | 0920001106 |
| Lathraea squamaria | Toothwort | Page 47 | A1 | 125--1--1 | N | L. | 0920001107 |
| Lathyrus angulatus | Angular Pea | Clement | A3 | 77--15--ang | L. | 0920006808 | |
| Lathyrus annuus | Fodder Pea | Stace | A2 | 77--15--ann | Ca | L. | 0920008108 |
| Lathyrus aphaca | Yellow Vetchling | Yes | A1 | 77--15--13 | ?N | L. | 0920001108 |
| Lathyrus blepharicarpus | Clement | A3 | 77--15--ble | Boiss. | 0920006809 | ||
| Lathyrus cicera | Red Vetchling | Clement | A3 | 77--15--cic | L. | 0920004256 | |
| Lathyrus clymenum | Clement | A3 | 77--15--cly | L. | 0920006810 | ||
| Lathyrus gorgoni | Clement | A3 | 77--15--gor | Parl. | 0920006811 | ||
| Lathyrus grandiflorus | Two-flowered Everlasting-pea | Yes | A1 | 77--15--7 | Ne | Sm. | 0920004379 |
| Lathyrus heterophyllus | Norfolk Everlasting-pea | Yes | A1 | 77--15--10 | Ne | L. | 0920007426 |
| Lathyrus hierosolymitanus | Clement | A3 | 77--15--hie | Boiss. | 0920005677 | ||
| Lathyrus hirsutus | Hairy Vetchling | Yes | A1 | 77--15--11 | Ne | L. | 0920001109 |
| Lathyrus inconspicuus | Clement | A3 | 77--15--inc | L. | 0920004225 | ||
| Lathyrus japonicus | Sea Pea | Page 49 | A1 | 77--15--2 | N | Willd. | 0920001110 |
| Lathyrus japonicus subsp. maritimus | Yes | A1 | 77--15--2--a | (L.) P.W. Ball | 0920001110 | ||
| Lathyrus latifolius | Broad-leaved Everlasting-pea | Page 49 | A1 | 77--15--9 | Ne | L. | 0920001111 |
| Lathyrus linifolius | Bitter-vetch | Page 49 | A1 | 77--15--3 | N | (Reichard) B„ssler | 0920001112 |
| Lathyrus marmoratus | Clement | A3 | 77--15--mar | Boiss. & Balansa | 0920006812 | ||
| Lathyrus niger | Black Pea | Yes | A1 | 77--15--1 | Ne | (L.) Bernh. | 0920001113 |
| Lathyrus nissolia | Grass Vetchling | Page 49 | A1 | 77--15--12 | N | L. | 0920001114 |
| Lathyrus ochrus | Winged Vetchling | Clement | A3 | 77--15--och | (L.) DC. | 0920005678 | |
| Lathyrus odoratus | Sweet Pea | Stace | A2 | 77--15--odo | Ca | L. | 0920008109 |
| Lathyrus palustris | Marsh Pea | Yes | A1 | 77--15--5 | N | L. | 0920001115 |
| Lathyrus palustris subsp. palustris | Other | AT | 77--15--5--a | ||||
| Lathyrus palustris subsp. pilosus | Clement | A3 | 77--15--5--b | (Cham.) Hult‚n | 0920001115.1 | ||
| Lathyrus pratensis | Meadow Vetchling | Page 49 | A1 | 77--15--4 | N | L. | 0920001116 |
| Lathyrus rotundifolius | Round-leaved Vetchling | Clement | A3 | 77--15--rot | Willd. | 0920006814 | |
| Lathyrus sativus | Indian Pea | Stace | A2 | 77--15--sat | Ca | L. | 0920008110 |
| Lathyrus saxatilis | Clement | A3 | 77--15--sax | (Vent.) Vis. | 0920006815 | ||
| Lathyrus setifolius | Brown Vetchling | Clement | A3 | 77--15--set | L. | 0920006816 | |
| Lathyrus sphaericus | Round-seeded Vetchling | Clement | A3 | 77--15--sph | Retz. | 0920005654 | |
| Lathyrus sylvestris | Narrow-leaved Everlasting-pea | Page 49 | A1 | 77--15--8 | N | L. | 0920001117 |
| Lathyrus tingitanus | Tangier Pea | Clement | A3 | 77--15--tin | L. | 0920006817 | |
| Lathyrus tuberosus | Tuberous Pea | Yes | A1 | 77--15--6 | Ne | L. | 0920001118 |
| Laurus nobilis | Bay | Yes | A1 | 24--1--1 | Ne | L. | 0920002427 |
| Lavandula angustifolia | Garden Lavender | Yes S2 | A1 | 118--LAV--ang | Mill. | ||
| Lavandula angustifolia x latifolia = L. x intermedia | Hybrid Lavender | Clement | A3 | 118--LAV--ang x lat | Ne | Loisel. | 0920007866 |
| Lavandula latifolia | Broad-leaved Lavender | Clement | A3 | 118--LAV--lat | Medik. | ||
| Lavatera arborea | Tree-mallow | Page 49 | A1 | 53--2--1 | N | L. | 0920001119 |
| Lavatera cretica | Smaller Tree-mallow | Yes | A1 | 53--2--2 | Ne | L. | 0920001120 |
| Lavatera kashmiriana | Wild Hollyhock | Clement | A3 | 53--2--kas | Cambess. | 0920006818 | |
| Lavatera maritima | Sea Mallow | Clement | A3 | 53--2--mar | Gouan | 0920006819 | |
| Lavatera olbia x thuringiaca = L. x clementii | Garden Tree-mallow | Yes S3 | A1 | 53--2--olb x thu | Cheek | 0920007427 | |
| Lavatera plebeia | Australian Hollyhock | Stace | A2 | 53--2--ple | Ca | Sims | 0920008112 |
| Lavatera punctata | Spotted-stalked Tree-mallow | Clement | A3 | 53--2--pun | All. | 0920004230 | |
| Lavatera triloba | Clement | A3 | 53--2--tri | L. | 0920005630 | ||
| Lavatera trimestris | Royal Mallow | Stace | A2 | 53--2--trm | Ca | L. | 0920008113 |
| Layia chrysanthemoides | Smooth Layia | Clement | A3 | 135--LAY--chr | (DC.) A. Gray | 0920006820 | |
| Ledum palustre | Labrador-tea | Yes | A1 | 65--1--1 | Ne | L. | 0920007428 |
| Ledum palustre subsp. groenlandicum | Yes | A1 | 65--1--1--a | (Oeder) Hult‚n | 0920001121 | ||
| Leersia oryzoides | Cut-grass | Yes | A1 | 153--7--1 | Ne | (L.) Sw. | 0920001123 |
| Legousia falcata | Clement | A3 | 129--2--fal | (Ten.) Fritsch | 0920006821 | ||
| Legousia hybrida | Venus's-looking-glass | Page 49 | A1 | 129--2--1 | Ar | (L.) Delarbre | 0920001124 |
| Legousia pentagonia | Clement | A3 | 129--2--pen | (L.) Druce | 0920006822 | ||
| Legousia speculum-veneris | Large Venus's-looking-glass | Yes S1 | A1 | 129--2--spe | Ne | (L.) Chaix | 0920003484 |
| Lemna gibba | Fat Duckweed | Page 49 | A1 | 148--2--1 | N | L. | 0920001125 |
| Lemna minor | Common Duckweed | Page 49 | A1 | 148--2--2 | N | L. | 0920001126 |
| Lemna minuta | Least Duckweed | Page 49 | A1 | 148--2--4 | Ne | Kunth | 0920002300 |
| Lemna trisulca | Ivy-leaved Duckweed | Page 49 | A1 | 148--2--3 | N | L. | 0920001128 |
| Lens culinaris | Lentil | Stace | A2 | 77--LEN--cul | Ca | Medik. | 0920008114 |
| Lens nigricans | Clement | A3 | 77--LEN--nig | (M. Bieb.) Godr. | 0920006823 | ||
| Leontodon autumnalis | Autumn Hawkbit | Page 49 | A1 | 135--16--1 | N | L. | 0920001129 |
| Leontodon autumnalis subsp. autumnalis | Yes | A1 | 135--16--1--a | 0920001129.1 | |||
| Leontodon autumnalis subsp. pratensis | Yes | A1 | 135--16--1--b | (Hornem.) Gremli | 0920001129.2 | ||
| Leontodon hispidus | Rough Hawkbit | Page 49 | A1 | 135--16--2 | N | L. | 0920001130 |
| Leontodon hispidus subsp. danubialis | Yes | A3 | 135--16--2--b | (Jacq.) Simonk. | 0920001130.3 | ||
| Leontodon hispidus x saxatilis | Yes | A1 | 135--16--2 x 3 | 0920002837 | |||
| Leontodon muelleri | Clement | A3 | 135--16--mue | (Sch. Bip.) Fiori | 0920006825 | ||
| Leontodon salzmannii | Clement | A3 | 135--16--sal | (Sch. Bip.) Ball | 0920006826 | ||
| Leontodon saxatilis | Lesser Hawkbit | Page 49 | A1 | 135--16--3 | N | Lam. | 0920001131 |
| Leontopodium alpinum | Edelweiss | Clement | A3 | 135--LEO--alp | Cass. | 0920006827 | |
| Leonurus cardiaca | Motherwort | Yes | A1 | 118--3--1 | Ne | L. | 0920001132 |
| Leonurus marrubiastrum | False Motherwort | Clement | A3 | 118--3--mar | L. | 0920006828 | |
| Lepidium aletes | Clement | A3 | 62--30--ale | J. Macbr. | 0920006829 | ||
| Lepidium aucheri | Clement | A3 | 62--30--auc | Boiss. | 0920006830 | ||
| Lepidium bipinnatifidum | Wayside Pepperwort | Clement | A3 | 62--30--bip | Desv. | 0920006831 | |
| Lepidium bonariense | Argentine Pepperwort | Stace | A2 | 62--30--bon | Ca | L. | 0920004488 |
| Lepidium campestre | Field Pepperwort | Page 49 | A1 | 62--30--2 | Ar | (L.) W.T. Aiton | 0920001133 |
| Lepidium capense | Clement | A3 | 62--30--cap | Thunb. | 0920006832 | ||
| Lepidium desertorum | Clement | A3 | 62--30--des | Eckl. & N.B. Zeyh. | 0920006833 | ||
| Lepidium desvauxii | Bushy Pepperwort | Clement | A3 | 62--30--dev | Thell. | 0920006834 | |
| Lepidium draba | Hoary Cress | Page 49 | A1 | 62--30--8 | Ne | L. | 0920000333 |
| Lepidium draba subsp. chalepense | Yes | A1 | 62--30--8--b | Ne | (L.) Thell. | 0920000333.2 | |
| Lepidium draba subsp. draba | Yes | A1 | 62--30--8--a | 0920000333.1 | |||
| Lepidium fallax | Clement | A3 | 62--30--fal | Ryves | 0920006835 | ||
| Lepidium fasciculatum | Bundled Pepperwort | Clement | A3 | 62--30--fas | Thell. | 0920006836 | |
| Lepidium graminifolium | Tall Pepperwort | Yes | A1 | 62--30--7 | Ne | L. | 0920002987 |
| Lepidium heterophyllum | Smith's Pepperwort | Page 49 | A1 | 62--30--3 | N | Benth. | 0920001139 |
| Lepidium hirtum | Clement | A3 | 62--30--hir | (L.) Sm. | 0920006837 | ||
| Lepidium hyssopifolium | African Pepperwort | Stace | A2 | 62--30--hys | Ca | Desv. | 0920004487 |
| Lepidium lasiocarpum | Clement | A3 | 62--30--las | Nutt. | 0920006838 | ||
| Lepidium latifolium | Dittander | Page 49 | A1 | 62--30--6 | N | L. | 0920001135 |
| Lepidium lyratum | Clement | A3 | 62--30--lyr | L. | 0920006839 | ||
| Lepidium monoplocoides | Winged Pepperwort | Clement | A3 | 62--30--mon | F. Muell. | 0920006840 | |
| Lepidium montanum | Clement | A3 | 62--30--mot | Nutt. ex Torr. & A. Gray | 0920006841 | ||
| Lepidium oxytrichum | Clement | A3 | 62--30--oxy | Sprague | 0920006842 | ||
| Lepidium papillosum | Warty Pepperwort | Clement | A3 | 62--30--pap | F. Muell. | 0920006843 | |
| Lepidium peregrinum | Clement | A3 | 62--30--peg | Thell. | 0920006844 | ||
| Lepidium perfoliatum | Perfoliate Pepperwort | Stace | A2 | 62--30--per | Ne | L. | 0920002570 |
| Lepidium pinnatifidum | Clement | A3 | 62--30--pin | L. | 0920006845 | ||
| Lepidium pseudodidymum | Clement | A3 | 62--30--pse | Thell. | 0920006846 | ||
| Lepidium pseudohyssopifolium | Clement | A3 | 62--30--psh | Hewson | 0920006847 | ||
| Lepidium pseudoruderale | Clement | A3 | 62--30--psr | Thell. | 0920006848 | ||
| Lepidium ruderale | Narrow-leaved Pepperwort | Page 49 | A1 | 62--30--5 | Ar | L. | 0920001137 |
| Lepidium sagittulatum | Clement | A3 | 62--30--sag | Thell. | 0920006849 | ||
| Lepidium sativum | Garden Cress | Yes | A1 | 62--30--1 | Ca | L. | 0920001138 |
| Lepidium schinzii | Clement | A3 | 62--30--sch | Thell. | 0920006850 | ||
| Lepidium spicatum | Clement | A3 | 62--30--spc | Desv. | 0920006851 | ||
| Lepidium spinosum | Clement | A3 | 62--30--spi | Ard. | 0920006852 | ||
| Lepidium strictum | Clement | A3 | 62--30--str | (S. Watson) Rattan | 0920006853 | ||
| Lepidium villarsii | Clement | A3 | 62--30--vil | Gren. & Godr. | 0920006854 | ||
| Lepidium virginicum | Least Pepperwort | Yes | A1 | 62--30--4 | Ne | L. | 0920002571 |
| Leptochloa ciliolata | Clement | A3 | 153--LEO--cil | (Jedwabn.) S.T. Blake | 0920006855 | ||
| Leptochloa decipiens | Clement | A3 | 153--LEO--dec | (R. Br.) Stapf ex Maiden | 0920006856 | ||
| Leptochloa divaricatissima | Clement | A3 | 153--LEO--div | S.T. Blake | 0920006857 | ||
| Leptochloa fascicularis | Clement | A3 | 153--LEO--fas | (Lam.) A. Gray | 0920006858 | ||
| Leptochloa fusca | Brown Beetle-grass | Stace | A2 | 153--LEO--fus | Ca | (L.) Kunth | 0920003155 |
| Leptochloa muelleri | Clement | A3 | 153--LEO--mue | (Benth.) Stace | 0920006859 | ||
| Leptochloa peacockii | Clement | A3 | 153--LEO--pea | (Maiden & Betche) Domin | 0920006860 | ||
| Leptochloa uninervia | Clement | A3 | 153--LEO--uni | (J. Presl) Hitchc. & Chase | 0920006861 | ||
| Leptolepia novae-zelandiae | Clement | A3 | 13--LEP--nov | (Colenso) Mett. ex Diels | 0910006862 | ||
| Leptorhynchos squamatus | Scaly-buttons | Clement | A3 | 135--LEP--squ | (Labill.) Less. | 0920006863 | |
| Leptospermum lanigerum | Woolly Tea-tree | Clement | A3 | 83--LEP--lan | Ne | (Aiton) Sm. | 0920007429 |
| Leptospermum liversidgei | Lemon-scented Tea-tree | Clement | A3 | 83--LEP--liv | R.T. Baker & H. Sm. | 0920005557 | |
| Leptospermum scoparium | Broom Tea-tree | Clement | A3 | 83--LEP--sco | Ne | J.R. Forst. & G. Forst. | 0920007430 |
| Leptospermum sericeum | Swamp Tea-tree | Clement | A3 | 83--LEP--ser | Labill. | 0920005558 | |
| Lepyrodiclis holosteoides | Clement | A3 | 46--LEP--hol | (C.A. Mey.) Fenzl ex Fisch. & C.A. Mey. | 0920006864 | ||
| Lepyrodiclis stellarioides | Clement | A3 | 46--LEP--ste | (Willd. ex Schltdl.) Fisch. & C.A. Mey. | 0920006865 | ||
| Leucanthemella serotina | Autumn Oxeye | Yes | A1 | 135--57--1 | Ne | (L.) Tzvelev | 0920007431 |
| Leucanthemum atratum | Saw-leaved Moon-daisy | Clement | A3 | 135--58--atr | (Jacq.) DC. | 0920006866 | |
| Leucanthemum lacustre | Portuguese Swamp-daisy | Clement | A3 | 135--58--lac | (Brot.) Samp. | 0920006867 | |
| Leucanthemum lacustre x maximum = L. x superbum | Shasta Daisy | Yes | A1 | 135--58--lac x max | Ne | (Bergmans ex J.W. Ingram) D.H. Kent | 0920002621 |
| Leucanthemum maximum | Clement | A3 | 135--58--max | (Ramond) DC. | 0920006868 | ||
| Leucanthemum monspeliense | Clement | A3 | 135--58--mon | (L.) Coste | 0920006869 | ||
| Leucanthemum paludosum | Clement | A3 | 135--58--pal | (Poir.) Bonnet & Barratte | 0920006870 | ||
| Leucanthemum vulgare | Oxeye Daisy | Page 51 | A1 | 135--58--1 | N | Lam. | 0920000502 |
| Leucojum aestivum | Summer Snowflake | Yes | A1 | 158--31--1 | N | L. | 0920001140 |
| Leucojum aestivum subsp. aestivum | Yes | A1 | 158--31--1--a | 0920001140.1 | |||
| Leucojum aestivum subsp. pulchellum | Yes | A1 | 158--31--1--b | (Salisb.) Briq. | 0920001140.2 | ||
| Leucojum vernum | Spring Snowflake | Yes | A1 | 158--31--2 | Ne | L. | 0920001141 |
| Leucothoe fontanesiana | Fetter-bush | Yes S2 | A1 | 65--LEU--fon | (Steud.) Sleumer | ||
| Levisticum officinale | Lovage | Yes | A1 | 107--38--1 | Ne | W.D.J. Koch | 0920007432 |
| Leycesteria formosa | Himalayan Honeysuckle | Yes | A1 | 131--5--1 | Ne | Wall. | 0920001142 |
| Leymus arenarius | Lyme-grass | Page 51 | A1 | 153--57--1 | N | (L.) Hochst. | 0920000682 |
| Leymus karelinii | Clement | A3 | 153--57--kar | (Turcz.) Tzvelev | 0920006871 | ||
| Leymus paboanus | Clement | A3 | 153--57--pab | (Claus) Pilg. | 0920006872 | ||
| Leymus secalinus | Clement | A3 | 153--57--sec | (Georgi) Tzvelev | 0920006873 | ||
| Leysera capillifolia | Clement | A3 | 135--LEY--cap | (Desf.) Spreng. | 0920006874 | ||
| Leysera tenella | Clement | A3 | 135--LEY--ten | DC. | 0920006875 | ||
| Liatris ligulistylis | Clement | A3 | 135--LIA--lig | (A. Nelson) A. Nelson | 0920004123 | ||
| Libertia caerulescens | Clement | A3 | 159--1--cae | Kunth | 0920006876 | ||
| Libertia elegans | Lesser Chilean-iris | Yes | A1 | 159--1--2 | Ne | Poepp. | 0920007433 |
| Libertia formosa | Chilean-iris | Yes | A1 | 159--1--1 | Ne | Graham | 0920007434 |
| Libocedrus chilensis | Chilean Incense-cedar | Clement | A3 | 21--LIB--chi | (D. Don) Endl. | 0920003635 | |
| Ligularia dentata | Leopardplant | Yes S1 | A1 | 135--68--1 | Ne | (A. Gray) H. Hara | 0920005433 |
| Ligularia fischeri | Clement | A3 | 135--68--fis | (Ledeb.) Turcz. | 0920006877 | ||
| Ligularia japonica | Clement | A3 | 135--68--jap | (Thunb.) Less. | 0920006878 | ||
| Ligularia przewalskii | Przewalski's Leopardplant | Yes | A1 | 135--68--2 | Ne | (Maxim.) Diels | 0920007435 |
| Ligusticum scoticum | Scots Lovage | Page 51 | A1 | 107--36--1 | N | L. | 0920001143 |
| Ligustrum lucidum | Tree Privet | Clement | A3 | 123--4--luc | W.T. Aiton | 0920004184 | |
| Ligustrum ovalifolium | Garden Privet | Yes | A1 | 123--4--2 | Ne | Hassk. | 0920002250 |
| Ligustrum sinensis | Chinese Privet | Clement | A3 | 123--4--sin | Lour. | 0920006879 | |
| Ligustrum strongylophyllum | Clement | A3 | 123--4--str | Hemsl. | 0920006880 | ||
| Ligustrum vulgare | Wild Privet | Page 51 | A1 | 123--4--1 | N | L. | 0920001144 |
| Ligustrum vulgare agg. | Aggregate | AK | 123--4--- | ||||
| Ligustrum vulgare x ovalifolium = L. x vicaryi | Yes S3 | A1 | 123--4--1 x 2 | Ne | Rehder | ||
| Lilium bulbiferum | Orange-lily | Clement | A3 | 158--12--bul | L. | 0920006881 | |
| Lilium canadense | Canada Lily | Clement | A3 | 158--12--caa | L. | 0920006882 | |
| Lilium candidum | Madonna Lily | Clement | A3 | 158--12--can | L. | 0920004114 | |
| Lilium martagon | Martagon Lily | Yes | A1 | 158--12--1 | Ne | L. | 0920001145 |
| Lilium monodelphum | Caucasian Lily | Clement | A3 | 158--12--mon | M. Bieb. | 0920006883 | |
| Lilium pomponium | Clement | A3 | 158--12--pom | L. | 0920006884 | ||
| Lilium pyrenaicum | Pyrenean Lily | Yes | A1 | 158--12--2 | Ne | Gouan | 0920001146 |
| Lilium regale | Royal Lily | Clement | A3 | 158--12--reg | E.H. Wilson | 0920006885 | |
| Lilium regale x sargentiae = L. x imperiale | Clement | A3 | 158--12--reg x sar | E.H. Wilson | 0920006886 | ||
| Limnanthes douglasii | Meadow-foam | Yes S3 | A1 | 103A--LIM--dou | Ne | R. Br. | 0920004363 |
| Limonium auriculae-ursifolium | Broad-leaved Sea-lavender | Yes | A1 | 48--1--4 | N | (Pourr.) Druce | 0920001150 |
| Limonium bellidifolium | Matted Sea-lavender | Yes | A1 | 48--1--3 | N | (Gouan) Dumort. | 0920001147 |
| Limonium binervosum | Rock Sea-lavender | Page 51 | A1 | 48--1--7 | (G.E. Sm.) C.E. Salmon | 0920002532 | |
| Limonium binervosum subsp. anglicum | Yes | A1 | 48--1--7--c | N | Ingr. | 0920002532.2 | |
| Limonium binervosum subsp. binervosum | Yes | A1 | 48--1--7--a | N | 0920002532.1 | ||
| Limonium binervosum subsp. cantianum | Yes | A1 | 48--1--7--b | N | Ingr. | 0920002532.3 | |
| Limonium binervosum subsp. mutatum | Yes | A1 | 48--1--7--e | N | Ingr. | 0920002532.4 | |
| Limonium binervosum subsp. sarniense | Yes | A1 | 48--1--7--f | N | Ingr. | 0920002532.9 | |
| Limonium binervosum subsp. saxonicum | Yes | A1 | 48--1--7--d | N | Ingr. | 0920002532.8 | |
| Limonium bonduellii | Algerian Statice | Clement | A3 | 48--1--bon | (F. Lestib.) Kuntze | 0920006887 | |
| Limonium britannicum | Yes | A1 | 48--1--10 | Ingr. | 0920002533 | ||
| Limonium britannicum subsp. britannicum | Yes | A1 | 48--1--10--a | N | 0920002533.8 | ||
| Limonium britannicum subsp. celticum | Yes | A1 | 48--1--10--d | N | Ingr. | 0920002533.9 | |
| Limonium britannicum subsp. coombense | Yes | A1 | 48--1--10--b | N | Ingr. | 0920002533.10 | |
| Limonium britannicum subsp. transcanalis | Yes | A1 | 48--1--10--c | N | Ingr. | 0920002533.7 | |
| Limonium dodartiforme | Yes | A1 | 48--1--14 | N | Ingr. | 0920002534 | |
| Limonium humile | Lax-flowered Sea-lavender | Yes | A1 | 48--1--2 | N | Mill. | 0920001149 |
| Limonium hyblaeum | Rottingdean Sea-lavender | Yes | A1 | 48--1--6 | Ne | Brullo | 0920002550 |
| Limonium loganicum | Yes | A1 | 48--1--12 | N | Ingr. | 0920002535 | |
| Limonium normannicum | Alderney Sea-lavender | Yes | A1 | 48--1--5 | N | Ingr. | 0920002562 |
| Limonium paradoxum | Yes | A1 | 48--1--8 | N | Pugsley | 0920001151 | |
| Limonium parvum | Yes | A1 | 48--1--11 | N | Ingr. | 0920002536 | |
| Limonium platyphyllum | Florist's Sea-lavender | Yes S3 | A1 | 48--1--pla | Ne | Lincz. | 0920008115 |
| Limonium procerum | Yes | A1 | 48--1--9 | (C.E. Salmon) Ingr. | 0920002537 | ||
| Limonium procerum subsp. cambrense | Yes | A1 | 48--1--9--c | N | Ingr. | 0920002537.7 | |
| Limonium procerum subsp. devoniense | Yes | A1 | 48--1--9--b | N | Ingr. | 0920002537.8 | |
| Limonium procerum subsp. procerum | Yes | A1 | 48--1--9--a | N | 0920002537.9 | ||
| Limonium recurvum | Yes | A1 | 48--1--15 | C.E. Salmon | 0920001152 | ||
| Limonium recurvum subsp. humile | Yes | A1 | 48--1--15--d | N | (Girard) Ingr. | 0920001152.8 | |
| Limonium recurvum subsp. portlandicum | Yes | A1 | 48--1--15--b | N | Ingr. | 0920001152.9 | |
| Limonium recurvum subsp. pseudotranswallianum | Yes | A1 | 48--1--15--c | N | Ingr. | 0920001152.4 | |
| Limonium recurvum subsp. recurvum | Yes | A1 | 48--1--15--a | N | 0920001152.10 | ||
| Limonium sinuatum | Statice | Clement | A3 | 48--1--sin | (L.) Mill. | 0920004226 | |
| Limonium transwallianum | Yes | A1 | 48--1--13 | N | (Pugsley) Pugsley | 0920001153 | |
| Limonium vulgare | Common Sea-lavender | Page 51 | A1 | 48--1--1 | N | Mill. | 0920001154 |
| Limonium vulgare x humile = L. x neumanii | Yes | A1 | 48--1--1 x 2 | C.E. Salmon | 0920002800 | ||
| Limosella aquatica | Mudwort | Yes | A1 | 124--5--1 | N | L. | 0920001155 |
| Limosella aquatica x australis | Yes | A1 | 124--5--1 x 2 | 0920001156 | |||
| Limosella australis | Welsh Mudwort | Yes | A1 | 124--5--2 | N | R. Br. | 0920001157 |
| Limosella capensis | Clement | A3 | 124--5--cap | Thunb. | 0920006888 | ||
| Linanthus androsaceus | Clement | A3 | 114--LIN--and | (Benth.) Greene | 0920004227 | ||
| Linanthus grandiflorus | Clement | A3 | 114--LIN--gra | (Benth.) Greene | 0920006889 | ||
| Linaria aeruginea | Clement | A3 | 124--13--aer | (Gouan) Cav. | 0920006890 | ||
| Linaria alpina | Clement | A3 | 124--13--alp | (L.) Mill. | 0920006891 | ||
| Linaria angustissima | Narrow-leaved Toadflax | Clement | A3 | 124--13--ang | (Loisel.) Borb s | 0920006892 | |
| Linaria anticaria | Clement | A3 | 124--13--ant | Boiss. & Reut. | 0920006893 | ||
| Linaria arenaria | Sand Toadflax | Yes | A1 | 124--13--6 | Ne | DC. | 0920001158 |
| Linaria arvensis | Corn Toadflax | Clement | A3 | 124--13--arv | (L.) Desf. | 0920006894 | |
| Linaria bipartita | Clement | A3 | 124--13--bip | (Vent.) Willd. | 0920004108 | ||
| Linaria caesia | Clement | A3 | 124--13--cae | (Pers.) F. Dietr. | 0920006895 | ||
| Linaria chalepensis | Clement | A3 | 124--13--cha | (L.) Mill. | 0920005610 | ||
| Linaria dalmatica | Balkan Toadflax | Yes | A1 | 124--13--2 | Ne | (L.) Mill. | 0920007436 |
| Linaria incarnata | Clement | A3 | 124--13--inc | (Vent.) Spreng. | 0920006896 | ||
| Linaria maroccana | Annual Toadflax | Stace | A2 | 124--13--mar | Ca | Hook. f. | 0920008116 |
| Linaria micrantha | Clement | A3 | 124--13--mic | (Cav.) Hoffmamms. & Link | 0920006897 | ||
| Linaria pelisseriana | Jersey Toadflax | Yes | A1 | 124--13--7 | Ne | (L.) Mill. | 0920001159 |
| Linaria purpurea | Purple Toadflax | Page 51 | A1 | 124--13--3 | Ne | (L.) Mill. | 0920001160 |
| Linaria purpurea x repens = L. x dominii | Yes | A1 | 124--13--3 x 4 | Druce | 0920002818 | ||
| Linaria reflexa | Clement | A3 | 124--13--ref | (L.) Desf. | 0920006898 | ||
| Linaria repens | Pale Toadflax | Page 51 | A1 | 124--13--4 | Ar | (L.) Mill. | 0920001161 |
| Linaria repens x supina = L. x cornubiensis | Yes | A1 | 124--13--4 x 5 | Druce | 0920007437 | ||
| Linaria saxatilis | Clement | A3 | 124--13--sax | (L.) Chaz. | 0920006899 | ||
| Linaria simplex | Clement | A3 | 124--13--sim | (Willd.) DC. | 0920006900 | ||
| Linaria spartea | Clement | A3 | 124--13--spa | (L.) Hoffmanns. & Link | 0920006901 | ||
| Linaria supina | Prostrate Toadflax | Yes | A1 | 124--13--5 | Ne | (L.) Chaz. | 0920001163 |
| Linaria triphylla | Clement | A3 | 124--13--tri | (L.) Mill. | 0920006902 | ||
| Linaria viscosa | Clement | A3 | 124--13--vis | (L.) Dum. Cours. | 0920006903 | ||
| Linaria vulgaris | Common Toadflax | Page 51 | A1 | 124--13--1 | N | Mill. | 0920001164 |
| Linaria vulgaris x repens = L. x sepium | Yes | A1 | 124--13--1 x 4 | ? | G.J. Allman | 0920001162 | |
| Linnaea borealis | Twinflower | Yes | A1 | 131--4--1 | N | L. | 0920001165 |
| Linum austriacum | Clement | A3 | 94--1--aus | L. | 0920006904 | ||
| Linum bienne | Pale Flax | Page 51 | A1 | 94--1--1 | N | Mill. | 0920001168 |
| Linum catharticum | Fairy Flax | Page 51 | A1 | 94--1--4 | N | L. | 0920001169 |
| Linum grandiflorum | Crimson Flax | Clement | A3 | 94--1--gra | Desf. | 0920006905 | |
| Linum narbonense | Clement | A3 | 94--1--nar | L. | 0920006906 | ||
| Linum perenne | Perennial Flax | Yes | A1 | 94--1--3 | N | L. | 0920001167 |
| Linum perenne subsp. anglicum | Yes | A1 | 94--1--3--a | (Mill.) Ockendon | 0920001167 | ||
| Linum perenne subsp. montanum | Clement | A3 | 94--1--3--b | (Schleich. ex DC.) Ockendon | 0920001167.1 | ||
| Linum suffruticosum | White Flax | Clement | A3 | 94--1--suf | L. | 0920006908 | |
| Linum tenue | Clement | A3 | 94--1--tee | Desf. | 0920006909 | ||
| Linum tenuifolium | Clement | A3 | 94--1--ten | L. | 0920006910 | ||
| Linum usitatissimum | Flax | Yes | A1 | 94--1--2 | Ne | L. | 0920001170 |
| Liparis loeselii | Fen Orchid | Yes | A1 | 162--9--1 | N | (L.) Rich. | 0920001171 |
| Liriodendron tulipifera | Tulip-tree | Clement | A3 | 23A--LIR--tul | L. | 0920004176 | |
| Listera cordata | Lesser Twayblade | Page 51 | A1 | 162--6--2 | N | (L.) R. Br. | 0920001172 |
| Listera ovata | Common Twayblade | Page 51 | A1 | 162--6--1 | N | (L.) R. Br. | 0920001173 |
| Lithodora diffusa | Clement | A3 | 116--LIT--dif | (Lag.) I.M. Johnst. | 0920006911 | ||
| Lithospermum arvense | Field Gromwell | Yes | A1 | 116--1--3 | Ar | L. | 0920000278 |
| Lithospermum officinale | Common Gromwell | Page 51 | A1 | 116--1--2 | N | L. | 0920001174 |
| Lithospermum purpureocaeruleum | Purple Gromwell | Yes | A1 | 116--1--1 | N | L. | 0920000279 |
| Littorella uniflora | Shoreweed | Page 51 | A1 | 121--2--1 | N | (L.) Asch. | 0920001175 |
| Lloydia serotina | Snowdon Lily | Yes | A1 | 158--8--1 | N | (L.) Rchb. | 0920001176 |
| Lobelia dortmanna | Water Lobelia | Page 51 | A1 | 129--7--3 | N | L. | 0920001177 |
| Lobelia erinus | Garden Lobelia | Yes | A1 | 129--7--2 | Ne | L. | 0920004364 |
| Lobelia filiformis | Clement | A3 | 129--7--fil | Lam. | 0920006912 | ||
| Lobelia gracilis | Clement | A3 | 129--7--gra | Andrz. | 0920006913 | ||
| Lobelia siphilitica | Great Lobelia | Clement | A3 | 129--7--sip | L. | 0920008117 | |
| Lobelia urens | Heath Lobelia | Yes | A1 | 129--7--1 | N | L. | 0920001178 |
| Lobularia maritima | Sweet Alison | Page 51 | A1 | 62--20--1 | Ne | (L.) Desv. | 0920001179 |
| Loeflingia hispanica | Clement | A3 | 46--LOE--his | L. | 0920006914 | ||
| Loiseleuria procumbens | Trailing Azalea | Page 51 | A1 | 65--3--1 | N | (L.) Desv. | 0920001180 |
| Lolium multiflorum | Italian Rye-grass | Yes | A1 | 153--13--2 | Ne | Lam. | 0920001182 |
| Lolium perenne | Perennial Rye-grass | Page 51 | A1 | 153--13--1 | N | L. | 0920001183 |
| Lolium perenne x multiflorum = L. x boucheanum | Yes | A1 | 153--13--1 x 2 | ? | Kunth | 0920001181 | |
| Lolium persicum | Clement | A3 | 153--13--per | Boiss. & Hohen. ex Boiss. | 0920006915 | ||
| Lolium remotum | Flaxfield Rye-grass | Stace | A2 | 153--13--rem | Ca | Schrank | 0920001184 |
| Lolium rigidum | Mediterranean Rye-grass | Stace | A2 | 153--13--rig | Ca | Gaudin | 0920008118 |
| Lolium temulentum | Darnel | Stace | A2 | 153--13--tem | Ar | L. | 0920001185 |
| Lonas annua | African Daisy | Clement | A3 | 135--LON--ann | (L.) Vines & Druce | 0920006916 | |
| Lonicera alpigena | Alpine Honeysuckle | Clement | A3 | 131--6--alp | L. | 0920006917 | |
| Lonicera caerulea | Blue-berried Honeysuckle | Clement | A3 | 131--6--cae | L. | 0920006918 | |
| Lonicera caprifolium | Perfoliate Honeysuckle | Yes | A1 | 131--6--8 | Ne | L. | 0920001186 |
| Lonicera caprifolium x etrusca = L. x italica | Garden Honeysuckle | Yes | A1 | 131--6--8 x etr | Ne | Schmidt ex Tausch | 0920007441 |
| Lonicera chrysantha | Clement | A3 | 131--6--chr | Turcz. | 0920006919 | ||
| Lonicera etrusca | Etruscan Honeysuckle | Clement | A3 | 131--6--etr | Santi | 0920006920 | |
| Lonicera fragrantissima x standishii = L. x purpusii | Clement | A3 | 131--6--fra x sta | Rehder | 0920006924 | ||
| Lonicera henryi | Henry's Honeysuckle | Yes | A1 | 131--6--5 | Ne | Hemsl. | 0920007438 |
| Lonicera involucrata | Californian Honeysuckle | Yes | A1 | 131--6--3 | Ne | (Richardson) Banks ex Spreng. | 0920007439 |
| Lonicera japonica | Japanese Honeysuckle | Yes | A1 | 131--6--6 | Ne | Thunb. | 0920001187 |
| Lonicera morrowii | Morrow's Honeysuckle | Clement | A3 | 131--6--mor | A. Gray | 0920006921 | |
| Lonicera nitida | Wilson's Honeysuckle | Yes | A1 | 131--6--2 | Ne | E.H. Wilson | 0920002613 |
| Lonicera periclymenum | Honeysuckle | Page 51 | A1 | 131--6--7 | N | L. | 0920001188 |
| Lonicera pileata | Box-leaved Honeysuckle | Yes | A1 | 131--6--1 | Ne | Oliv. | 0920007440 |
| Lonicera standishii | Clement | A3 | 131--6--sta | Jacq. | 0920006922 | ||
| Lonicera syringantha | Lilac-scented Honeysuckle | Clement | A3 | 131--6--syr | Maxim. | 0920006923 | |
| Lonicera tatarica | Tartarian Honeysuckle | Yes S1 | A1 | 131--6--tat | Ne | L. | 0920003488 |
| Lonicera trichosantha | Clement | A3 | 131--6--tri | Bureau & Franch. | 0920008119 | ||
| Lonicera xylosteum | Fly Honeysuckle | Yes | A1 | 131--6--4 | Ne | L. | 0920001189 |
| Lopezia coronata | Crown-jewels | Clement | A3 | 84--LOP--cor | Andrews | 0920006925 | |
| Lotononis lupinifolia | Clement | A3 | 77--LOT--lup | (Boiss.) Benth. | 0920006926 | ||
| Lotus americanus | Prairie Trefoil | Clement | A3 | 77--8--ame | (Nutt.) Bisch. | 0920006927 | |
| Lotus angustissimus | Slender Bird's-foot-trefoil | Yes | A1 | 77--8--5 | N | L. | 0920001190 |
| Lotus borbasii | Clement | A3 | 77--8--bor | Ujhelyi | 0920006928 | ||
| Lotus conimbricensis | Clement | A3 | 77--8--con | Brot. | 0920006929 | ||
| Lotus corniculatus | Common Bird's-foot-trefoil | Page 53 | A1 | 77--8--2 | N | L. | 0920001191 |
| Lotus creticus | Cretan Bird's-foot-trefoil | Clement | A3 | 77--8--cre | L. | 0920006931 | |
| Lotus cytisoides | Clement | A3 | 77--8--cyt | L. | 0920006934 | ||
| Lotus edulis | Clement | A3 | 77--8--edu | L. | 0920006943 | ||
| Lotus jacobaeus | St James' Trefoil | Clement | A3 | 77--8--jac | L. | 0920006944 | |
| Lotus ornithopodioides | Southern Bird's-foot-trefoil | Clement | A3 | 77--8--orn | L. | 0920006946 | |
| Lotus palustris | Clement | A3 | 77--8--pal | Willd. | 0920006947 | ||
| Lotus pedunculatus | Greater Bird's-foot-trefoil | Page 53 | A1 | 77--8--3 | N | Cav. | 0920001194 |
| Lotus subbiflorus | Hairy Bird's-foot-trefoil | Yes | A1 | 77--8--4 | N | Lag. | 0920001192 |
| Lotus tenuis | Narrow-leaved Bird's-foot-trefoil | Yes S3 | A1 | 77--8--1 | N | Waldst. & Kit. ex Willd. | 0920001193 |
| Ludwigia grandiflora | Uruguayan Hampshire-purslane | Yes S3 | A1 | 84--3--gra | Ne | (Michx.) Greuter & Burdet | |
| Ludwigia palustris | Hampshire-purslane | Yes | A1 | 84--3--1 | N | (L.) Elliott | 0920001042 |
| Ludwigia palustris x repens = L. x kentiana | False Hampshire-purslane | Yes S2 | A1 | 84--3--1 x rep | E.J. Clement | ||
| Luma apiculata | Chilean Myrtle | Yes S1 | A1 | 83--3--1 | Ne | (DC.) Burret | 0920007154 |
| Lunaria annua | Honesty | Page 53 | A1 | 62--17--1 | Ne | L. | 0920001195 |
| Lunaria rediviva | Perennial Honesty | Clement | A3 | 62--17--red | L. | 0920004490 | |
| Lupinus albus | White Lupin | Clement | A2 | 77--21--alb | Ca | L. | 0920008120 |
| Lupinus angustifolius | Narrow-leaved Lupin | Clement | A2 | 77--21--ang | Ca | L. | 0920008121 |
| Lupinus arboreus | Tree Lupin | Yes | A1 | 77--21--1 | Ne | Sims | 0920001196 |
| Lupinus arboreus x polyphyllus = L. x regalis | Russell Lupin | Page 53 | A1 | 77--21--1 x 2 | Ne | Bergmans | 0920007444 |
| Lupinus arboreus x polyphyllus x nootkatensis | Yes | A1 | 77--21--1 x 2 x 3 | 0920007442 | |||
| Lupinus luteus | Annual Yellow-lupin | Clement | A3 | 77--21--lut | L. | 0920006948 | |
| Lupinus micranthus | Bitter Blue-lupin | Clement | A3 | 77--21--mic | Guss. | 0920006949 | |
| Lupinus nootkatensis | Nootka Lupin | Yes | A1 | 77--21--3 | Ne | Donn ex Sims | 0920001197 |
| Lupinus polyphyllus | Garden Lupin | Yes | A1 | 77--21--2 | Ne | Lindl. | 0920002428 |
| Lupinus polyphyllus agg. | Aggregate | AK | 77--21--- | ||||
| Lupinus polyphyllus x nootkatensis = L. x pseudopolyphyllus | Yes | A1 | 77--21--2 x 3 | C.P. Sm. | 0920007443 | ||
| Luronium natans | Floating Water-plantain | Yes | A1 | 137--3--1 | N | (L.) Raf. | 0920001198 |
| Luzula arcuata | Curved Wood-rush | Yes | A1 | 151--2--8 | N | (Wahlenb.) Sw. | 0920001199 |
| Luzula campestris | Field Wood-rush | Page 53 | A1 | 151--2--5 | N | (L.) DC. | 0920001201 |
| Luzula forsteri | Southern Wood-rush | Page 53 | A1 | 151--2--1 | N | (Sm.) DC. | 0920001202 |
| Luzula forsteri x pilosa = L. x borreri | Yes | A1 | 151--2--1 x 2 | N | Bromf. ex Bab. | 0920001200 | |
| Luzula luzuloides | White Wood-rush | Yes | A1 | 151--2--4 | Ne | (Lam.) Dandy & Wilmott | 0920001203 |
| Luzula multiflora | Heath Wood-rush | Page 53 | A1 | 151--2--6 | N | (Ehrh.) Lej. | 0920001204 |
| Luzula multiflora subsp. congesta | Yes | A1 | 151--2--6--b | (Thuill.) Arcang. | 0920001204.1 | ||
| Luzula multiflora subsp. hibernica | Yes S1 | A1 | 151--2--6--c | Kirschner & T.C.G. Rich | 0920001204.3 | ||
| Luzula multiflora subsp. multiflora | Yes | A1 | 151--2--6--a | 0920001204.2 | |||
| Luzula nivea | Snow-white Wood-rush | Clement | A3 | 151--2--niv | (L.) DC. | 0920001205 | |
| Luzula pallidula | Fen Wood-rush | Yes | A1 | 151--2--7 | N | Kirschner | 0920001206 |
| Luzula pilosa | Hairy Wood-rush | Page 53 | A1 | 151--2--2 | N | (L.) Willd. | 0920001207 |
| Luzula spicata | Spiked Wood-rush | Page 53 | A1 | 151--2--9 | N | (L.) DC. | 0920001208 |
| Luzula sylvatica | Great Wood-rush | Page 53 | A1 | 151--2--3 | N | (Huds.) Gaudin | 0920001209 |
| Lychnis alpina | Alpine Catchfly | Yes | A1 | 46--18--4 | N | L. | 0920002221 |
| Lychnis chalcedonica | Maltese-Cross | Yes S1 | A1 | 46--18--cha | Ne | L. | 0920008122 |
| Lychnis coronaria | Rose Campion | Yes | A1 | 46--18--1 | Ne | (L.) Murray | 0920002429 |
| Lychnis coronata x fulgens = L. x haageana | Clement | A3 | 46--18--cor x ful | Lem. | 0920006953 | ||
| Lychnis flos-cuculi | Ragged-Robin | Page 53 | A1 | 46--18--2 | N | L. | 0920001210 |
| Lychnis flos-jovis | Flower-of-Jove | Clement | A3 | 46--18--flo | (L.) Desr. | 0920006950 | |
| Lychnis fulgens | Clement | A3 | 46--18--ful | Fisch. ex Sims | 0920006951 | ||
| Lychnis viscaria | Sticky Catchfly | Yes | A1 | 46--18--3 | N | L. | 0920002222 |
| Lycium barbarum | Duke of Argyll's Teaplant | Page 53 | A1 | 110--2--1 | Ne | L. | 0920001212 |
| Lycium barbarum agg. | Aggregate | AK | 110--2--- | ||||
| Lycium chinense | Chinese Teaplant | Yes | A1 | 110--2--2 | Ne | Mill. | 0920001211 |
| Lycocarpus fugax | Clement | A3 | 62--LYC--fug | (Lag.) O.E. Schulz | 0920006954 | ||
| Lycopersicon esculentum | Tomato | Yes | A1 | 110--7--1 | Ne | Mill. | 0920004359 |
| Lycopersicon pimpinellifolium | Currant Tomato | Clement | A3 | 110--7--pim | Mill. | 0920006955 | |
| Lycopodiella inundata | Marsh Clubmoss | Yes | A1 | 1--2--1 | N | (L.) Holub | 0910001216 |
| Lycopodium annotinum | Interrupted Clubmoss | Yes | A1 | 1--3--2 | N | L. | 0910001214 |
| Lycopodium clavatum | Stag's-horn Clubmoss | Page 53 | A1 | 1--3--1 | N | L. | 0910001215 |
| Lycopus europaeus | Gypsywort | Page 53 | A1 | 118--22--1 | N | L. | 0920001219 |
| Lysichiton americanus | American Skunk-cabbage | Yes | A1 | 147--2--1 | Ne | Hult‚n & H. St. John | 0920002619 |
| Lysichiton camtschatcensis | Asian Skunk-cabbage | Yes | A1 | 147--2--2 | Ne | (L.) Schott | 0920007445 |
| Lysimachia ciliata | Fringed Loosestrife | Yes | A1 | 69--4--4 | Ne | L. | 0920001220 |
| Lysimachia ephemerum | Clement | A3 | 69--4--eph | L. | 0920006956 | ||
| Lysimachia nemorum | Yellow Pimpernel | Page 53 | A1 | 69--4--1 | N | L. | 0920001221 |
| Lysimachia nummularia | Creeping-Jenny | Page 53 | A1 | 69--4--2 | N | L. | 0920001222 |
| Lysimachia punctata | Dotted Loosestrife | Page 53 | A1 | 69--4--5 | Ne | L. | 0920001223 |
| Lysimachia quadrifolia | Whorled Loosestrife | Clement | A3 | 69--4--qua | L. | 0920006959 | |
| Lysimachia terrestris | Lake Loosestrife | Yes | A1 | 69--4--6 | Ne | (L.) Britton | 0920001224 |
| Lysimachia thyrsiflora | Tufted Loosestrife | Yes | A1 | 69--4--7 | N | L. | 0920001350 |
| Lysimachia vulgaris | Yellow Loosestrife | Page 53 | A1 | 69--4--3 | N | L. | 0920001225 |
| Lythrum alatum | Angled Purple-loosestrife | Clement | A3 | 81--1--ala | Pursh | 0920006961 | |
| Lythrum hyssopifolia | Grass-poly | Yes | A1 | 81--1--2 | Ar | L. | 0920001226 |
| Lythrum junceum | False Grass-poly | Stace | A2 | 81--1--jun | Ca | Banks & Sol. | 0920004432 |
| Lythrum portula | Water-purslane | Page 53 | A1 | 81--1--3 | N | (L.) D.A. Webb | 0920001444 |
| Lythrum portula subsp. longidentatum | Yes | A1 | 81--1--3--b | (J. Gay) P.D. Sell | 0920001444.1 | ||
| Lythrum portula subsp. portula | Yes | A1 | 81--1--3--a | 0920001444.2 | |||
| Lythrum salicaria | Purple-loosestrife | Page 53 | A1 | 81--1--1 | N | L. | 0920001227 |
| Lythrum virgatum | Clement | A3 | 81--1--vir | L. | 0920006962 |