1. Plants growing among rocks
   - rupestral plant, rupestrine plant, saxicolous plant

Type of: rock plant

• family Akeridae
• family Alaudidae
• family Albuginaceae
• family Albulidae
• family Alcedinidae
• family Alcidae
• family Aleyrodidae
• family Alismataceae
• family Alliaceae
• family Alligatoridae
• family Allioniaceae
• family Aloeaceae
• family Alopiidae
• family Alstroemeriaceae
• family Amaranthaceae
• family Amaryllidaceae
• family Ambrosiaceae
• family Ambystomatidae
• family Ameiuridae
• family Amiidae
• family Ammodytidae
• family Amphioxidae
• family Amphisbaenidae
• family Amphiumidae
• family Amygdalaceae