| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| LITUC | Linanthus tularensis (Brand) Mason ssp. culbertsonii (Brand) Mason | Linanthus oblanceolatus | Polemoniaceae
|
| LITU5 | Linanthus tularensis (Brand) Mason | Linanthus oblanceolatus | Polemoniaceae
|
| LINAN2 | Linanthus Benth. | linanthus | Polemoniaceae
|
| LIAE2 | Linaria aeruginea (Gouan) Cav. | roadside toadflax | Scrophulariaceae
|
| LIAN10 | Linaria angustissima (Loisel.) Borb�s | Italian toadflax | Scrophulariaceae
|
| LIBI3 | Linaria bipartita (Vent.) Willd. | clovenlip toadflax | Scrophulariaceae
|
| LICAT2 | Linaria canadensis (L.) Chaz. var. texana (Scheele) Pennell | Nuttallanthus texanus | Scrophulariaceae
|
| LICA6 | Linaria canadensis (L.) Chaz. | Nuttallanthus canadensis | Scrophulariaceae
|
| LICY4 | Linaria cymbalaria (L.) P. Mill. | Cymbalaria muralis | Scrophulariaceae
|
| LIDAD | Linaria dalmatica (L.) P. Mill. ssp. dalmatica | Dalmatian toadflax | Scrophulariaceae
|
| LIDAM | Linaria dalmatica (L.) P. Mill. ssp. macedonica (Griseb.) D.A. Sutton | Dalmatian toadflax | Scrophulariaceae
|
| LIDAM2 | Linaria dalmatica (L.) P. Mill. var. macedonica (Griseb.) Vandas | Linaria dalmatica ssp. macedonica | Scrophulariaceae
|
| LIDA | Linaria dalmatica (L.) P. Mill. | Dalmatian toadflax | Scrophulariaceae
|
| LIEL5 | Linaria elatine (L.) P. Mill. | Kickxia elatine | Scrophulariaceae
|
| LIFL4 | Linaria floridana Chapman | Nuttallanthus floridanus | Scrophulariaceae
|
| LIGED | Linaria genistifolia (L.) P. Mill. ssp. dalmatica (L.) Maire & Petitm. | Linaria dalmatica ssp. dalmatica | Scrophulariaceae
|
| LIGE | Linaria genistifolia (L.) P. Mill. | broomleaf toadflax | Scrophulariaceae
|
| LIIN3 | Linaria incarnata (Vent.) Spreng. | crimson toadflax | Scrophulariaceae
|
| LIIT | Linaria italica Trev. | Linaria angustissima | Scrophulariaceae
|
| LILI6 | Linaria linaria (L.) Karst. | Linaria vulgaris | Scrophulariaceae
|
| LIMA11 | Linaria macedonica Griseb. | Linaria dalmatica ssp. macedonica | Scrophulariaceae
|
| LIMA3 | Linaria maroccana Hook. f. | Moroccan toadflax | Scrophulariaceae
|
| LIPI3 | Linaria pinifolia (Poir.) Thellung | pineneedle toadflax | Scrophulariaceae
|
| LIPU3 | Linaria purpurea (L.) P. Mill. | purple toadflax | Scrophulariaceae
|
| LIRE3 | Linaria repens (L.) P. Mill. | striped toadflax | Scrophulariaceae
|
| LIRE8 | Linaria reticulata (Sm.) Desf. | purplenet toadflax | Scrophulariaceae
|
| LISP5 | Linaria spartea (L.) Chaz. | ballast toadflax | Scrophulariaceae
|
| LISU3 | Linaria supina (L.) Chaz. | lesser butter and eggs | Scrophulariaceae
|
| LITE5 | Linaria texana Scheele | Nuttallanthus texanus | Scrophulariaceae
|
| LIVU2 | Linaria vulgaris P. Mill. | butter and eggs | Scrophulariaceae
|
| LINAR | Linaria P. Mill. | toadflax | Scrophulariaceae
|
| LIBRA | Lindbergia brachyptera (Mitt.) Kindb. var. austinii (Sull.) Grout | Lindbergia brachyptera | Leskeaceae
|
| LIBR9 | Lindbergia brachyptera (Mitt.) Kindb. | lindbergia moss | Leskeaceae
|
| LIME9 | Lindbergia mexicana (Besch.) Card. | Mexican lindbergia moss | Leskeaceae
|
| LINDB | Lindbergia Kindb. | lindbergia moss | Leskeaceae
|
| LIBEB | Lindera benzoin (L.) Blume var. benzoin | northern spicebush | Lauraceae
|
| LIBEP | Lindera benzoin (L.) Blume var. pubescens (Palmer & Steyermark) Rehd. | northern spicebush | Lauraceae
|
| LIBE3 | Lindera benzoin (L.) Blume | northern spicebush | Lauraceae
|
| LIME7 | Lindera melissifolia (Walt.) Blume | southern spicebush | Lauraceae
|
| LISU8 | Lindera subcoriacea B.E. Wofford | bog spicebush | Lauraceae
|
| LINDE2 | Lindera Thunb. | spicebush | Lauraceae
|
| LIAN2 | Lindernia anagallidea (Michx.) Pennell | Lindernia dubia var. anagallidea | Scrophulariaceae
|
| LIAN5 | Lindernia antipoda (L.) Alston | sparrow false pimpernel | Scrophulariaceae
|
| LICI4 | Lindernia ciliata (Colsmann) Pennell | fringed false pimpernel | Scrophulariaceae
|
| LICRS | Lindernia crustacea (L.) F. Muell. var. smithii O. Deg. & Ruhle | Lindernia crustacea | Scrophulariaceae
|
| LICR | Lindernia crustacea (L.) F. Muell. | Malaysian false pimpernel | Scrophulariaceae
|
| LIDI4 | Lindernia diffusa (L.) Wettst. | spreading false pimpernel | Scrophulariaceae
|
| LIDUA | Lindernia dubia (L.) Pennell var. anagallidea (Michx.) Cooperrider | yellowseed false pimpernel | Scrophulariaceae
|
| LIDUD | Lindernia dubia (L.) Pennell var. dubia | yellowseed false pimpernel | Scrophulariaceae
|
| LIDUI | Lindernia dubia (L.) Pennell var. inundata (Pennell) Pennell | yellowseed false pimpernel | Scrophulariaceae
|
| LIDUM | Lindernia dubia (L.) Pennell var. major (Pursh) Pennell | Lindernia dubia var. dubia | Scrophulariaceae
|
| LIDUR | Lindernia dubia (L.) Pennell var. riparia (Raf.) Fern. | Lindernia dubia var. dubia | Scrophulariaceae
|
| LIDUT | Lindernia dubia (L.) Pennell var. typica Pennell | Lindernia dubia var. dubia | Scrophulariaceae
|
| LIDU | Lindernia dubia (L.) Pennell | yellowseed false pimpernel | Scrophulariaceae
|
| LIGR8 | Lindernia grandiflora Nutt. | savannah false pimpernel | Scrophulariaceae
|
| LIMO3 | Lindernia monticola Nutt. | piedmont false pimpernel | Scrophulariaceae
|
| LIPR5 | Lindernia procumbens (Knock.) Borb. | prostrate false pimpernel | Scrophulariaceae
|
| LIPR2 | Lindernia procumbens auct. non (Knock.) Borb. | Lindernia dubia var. dubia | Scrophulariaceae
|
| LIPY3 | Lindernia pyxidaria sensu Pennell, non L. | Lindernia dubia var. dubia | Scrophulariaceae
|
| LISA3 | Lindernia saxicola M.A. Curtis | Lindernia monticola | Scrophulariaceae
|
| LINDE | Lindernia All. | false pimpernel | Scrophulariaceae
|
| LITE3 | Lindheimera texana Gray & Engelm. | Texas yellowstar | Asteraceae
|
| LINDH | Lindheimera Gray & Engelm. | lindheimera | Asteraceae
|
| LIEN | Lindsaea ensifolia Sw. | graceful necklace fern | Dennstaedtiaceae
|
| LILA3 | Lindsaea lancea (L.) Bedd. | woodland necklace fern | Dennstaedtiaceae
|
| LIMO8 | Lindsaea montana F�e | Lindsaea quadrangularis ssp. antillensis | Dennstaedtiaceae
|
| LIPO2 | Lindsaea portoricensis Desv. | Puerto Rico necklace fern | Dennstaedtiaceae
|
| LIQUA | Lindsaea quadrangularis Raddi ssp. antillensis Kramer | mountain necklace fern | Dennstaedtiaceae
|
| LIQU | Lindsaea quadrangularis Raddi | mountain necklace fern | Dennstaedtiaceae
|
| LIREM | Lindsaea repens (Bory) Thwaites var. macraeana (Hook. & Arn.) Mett. ex Kuhn | creeping necklace fern | Dennstaedtiaceae
|
| LIRE2 | Lindsaea repens (Bory) Thwaites | creeping necklace fern | Dennstaedtiaceae
|
| LISTJ | Lindsaea stricta (Sw.) Dry. ex Sm. var. jamesoniiformis Kramer | smallstalk necklace fern | Dennstaedtiaceae
|
| LIST3 | Lindsaea stricta (Sw.) Dry. ex Sm. | smallstalk necklace fern | Dennstaedtiaceae
|
| LINDS | Lindsaea Dry. ex Sm. | necklace fern | Dennstaedtiaceae
|
| LIFL8 | �Lindsaeosoria flynnii W.H. Wagner | | Dennstaedtiaceae
|
| LINDS2 | �Lindsaeosoria W.H. Wagner | lindsaeosoria | Dennstaedtiaceae
|
| LIAM5 | Linnaea americana Forbes | Linnaea borealis ssp. americana | Caprifoliaceae
|
| LIBOA | Linnaea borealis L. ssp. americana (Forbes) Hult�n ex Clausen | twinflower | Caprifoliaceae
|
| LIBOL2 | Linnaea borealis L. ssp. longiflora (Torr.) Hult�n | longtube twinflower | Caprifoliaceae
|
| LIBOA2 | Linnaea borealis L. var. americana (Forbes) Rehd. | Linnaea borealis ssp. americana | Caprifoliaceae
|
| LIBOL | Linnaea borealis L. var. longiflora Torr. | Linnaea borealis ssp. longiflora | Caprifoliaceae
|
| LIBO3 | Linnaea borealis L. | twinflower | Caprifoliaceae
|
| LINNA | Linnaea L. | twinflower | Caprifoliaceae
|
| LIAX | Linociera axilliflora Griseb. | Chionanthus axilliflorus | Oleaceae
|
| LICA7 | Linociera caribaea (Jacq.) Knobl. | Chionanthus compactus | Oleaceae
|
| LIDO | Linociera domingensis (Lam.) Knobl. | Chionanthus domingensis | Oleaceae
|
| LIHO | Linociera holdridgei Camp & Monachino | Chionanthus holdridgei | Oleaceae
|
| LILI5 | Linociera ligustrina Sw. | Chionanthus ligustrinus | Oleaceae
|
| LIMO10 | Linospadix monostachya (Mart.) H. Wendl. | walking-stick palm | Arecaceae
|
| LINOS | Linospadix H. Wendl. | linospadix | Arecaceae
|
| LIAR8 | Linosyris arborescens Gray | Ericameria arborescens | Asteraceae
|
| LICA20 | Linosyris carnosa Gray | Machaeranthera carnosa var. carnosa | Asteraceae
|
| LITE9 | Linosyris texana Torr. & Gray | Baccharis texana | Asteraceae
|
| LIAD2 | Linum adenophyllum Gray | Hesperolinon adenophyllum | Linaceae
|
| LIAL2 | Linum alatum (Small) Winkl. | winged flax | Linaceae
|
| LIAN8 | Linum angustifolium Huds. | Linum bienne | Linaceae
|
| LIAR5 | Linum arenicola (Small) Winkl. | sand flax | Linaceae
|
| LIARA2 | Linum aristatum Engelm. var. australe (Heller) Kearney & Peebles | Linum australe var. australe | Linaceae
|
| LIARS2 | Linum aristatum Engelm. var. subteres Trel. | Linum subteres | Linaceae
|
| LIAR3 | Linum aristatum Engelm. | bristle flax | Linaceae
|
| LIAUA | Linum australe Heller var. australe | southern flax | Linaceae
|