1. Not lessened or diminished
   - unrelieved

See also: unmitigated

• family Lardizabalaceae
• family Laricariidae
• family Laridae
• family Lasiocampidae
• family Latimeridae
• family Lauraceae
• family Lecanoraceae
• family Lecythidaceae
• family Leguminosae
• family Leiopelmatidae
• family Leitneriaceae
• family Lemnaceae
• family Lemuridae
• family Lennoaceae
• family Lentibulariaceae
• family Lepadidae
• family Lepidobotryaceae
• family Lepidodendraceae
• family Lepiotaceae
• family Lepismatidae
• family Lepisosteidae
• family Leporidae
• family Leptodactylidae
• family Leptotyphlopidae
• family Liliaceae