Lamium orientale 
Lance Selfheal 
Large self-heal 
Large-flowered calamint 
Large-flowered hemp-nettle 
Lavandula coronopifolia 
Lavandula subnuda 
Lavendula pedunculata 
Lemon balm 
Lemon Beebalm 
Lesser calamint 
Leucas inflata 
Limestone woundwort 
Lion's Ear 
Lobster Flower 
Long-leaved westringia 
Long-Stamen Basil 
Lyreleaf sage 
Magnificent prostanthera 
Marjoram 
Marrubium cuneatum 
Marsh Hedge Nettle 
Marsh Skullcap 
Meadow Sage