1. A radioactive element of the alkali-metal group discovered as a disintegration product of actinium
   - francium, Fr

Type of: metal, metallic element

• genus Lonicera
• genus Lophius
• genus Lophodytes
• genus Lopholatilus
• genus Lophophora
• genus Lophophorus
• genus Lophosoria
• genus Loranthus
• genus Loris
• genus Lota
• genus Lotus
• genus Lovoa
• genus Loxia
• genus Loxodonta
• genus Loxoma
• genus Loxostege
• genus Lucilia
• genus Lufengpithecus
• genus Luffa
• genus Lumpenus
• genus Lunaria
• genus Lunda
• genus Lupinus
• genus Luscinia
• genus Lutjanus