1. Being nine more than thirty
   - thirty-nine, 39

See also: cardinal

• genus Arisaema
• genus Arisarum
• genus Aristolochia
• genus Aristotelia
• genus Arius
• genus Arizona
• genus Armadillidium
• genus Armeria
• genus Armillaria
• genus Armillariella
• genus Armoracia
• genus Arnica
• genus Arnoseris
• genus Arrhenatherum
• genus Artamus
• genus Artemia
• genus Artemisia
• genus Arthropteris
• genus Artocarpus
• genus Arum
• genus Arundinaria
• genus Arundo
• genus Arvicola
• genus Asarum
• genus Ascaphus