1. Of illegal marriage to a second person while legally married to a first

See also: bigamy, polygamous

• genus Arctocephalus
• genus Arctonyx
• genus Arctostaphylos
• genus Arctotis
• genus Ardea
• genus Ardisia
• genus Areca
• genus Arenaria
• genus Arenga
• genus Arethusa
• genus Argemone
• genus Argentina
• genus Argentinosaurus
• genus Argiope
• genus Argonauta
• genus Argusianus
• genus Argynnis
• genus Argyranthemum
• genus Argyreia
• genus Argyrotaenia
• genus Argyroxiphium
• genus Arilus
• genus Ariocarpus
• lofty
• log