Materia Medica by William Boericke
- LAC CANINUM
- LAC VACCINUM DEFLORATUM
- LACHESIS MUTUS
- LACHNANTHES TINCTORIA
- LACTICUM ACIDUM
- LACTUCA VIROSA
- LAMIUM ALBUM
- LAPIS ALBUS
- LAPPA ARCTIUM
- LATHYRUS SATIVUS
- LATRODECTUS MACTANS
- LAUROCERASUS
- LECITHINUM
- LEDUM PALUSTRE
- LEMNA MINOR
- LEPIDIUM BONARIENSE
- LEPTANDRA VIRGINICA
- LIATRIS SPICATA
- LILIUM TIGRINUM
- LIMULUS CYCLOPS
- LINARIA VULGARIS
- LINUM USITATISSIMUM
- LITHIUM CARBONICUM
- LOBELIA INFLATA
- LOBELIA PURPURASCENS
- LOLEUM TEMULENTUM
- LONICERA XYLOSTEUM
- LUPULUS HUMULUS
- LYCOPERSICUM ESCULENTUM
- LYCOPODIUM CLAVATUM
- LYCOPUS VIRGINICUS
- LYSSINUM