Arnebia hispidissima 
Arnebia linearifolia 
Arnebia tinctoria 
Arnica latifolia 
Arnica parryi 
Arnobia pilipes 
Arnobia trichopus 
Arnold's Fringe-fingered Lizard 
Arocera apta 
Arocera spectabilis 
Aromatic Aster 
Aromatic Ginger 
Arotes amoenus 
Arothon_stellatus 
Arothron reticularis 
Arpophyllum gigantium 
Arrade destituta 
Arrade leucocosmalis 
Arran brown 
Arrau River turtle 
Arrhenatherum kotschyi 
Arrhenia epichysium 
Arrhenia hohensis 
Arrhenia rainierensis