Arpophyllum gigantium 
Arrhenatherum kotschyi 
Arrowhead 
Arrowleaf Elephant's Ear 
Arum euxinum 
Arum korolkowii 
Arum orientale 
Arum rupicola 
Ascending Dew-Grass 
Asian Fawnlily 
Asian rice 
Asian Taro 
Asiatic dayflower 
Asiatic dewflower 
Asparagus 
Asparagus albus 
Asparagus aphyllus 
Asparagus palaestinus 
Aspasia lunata 
Asphodeline brevicaulis 
Asphodeline globifera 
Asphodelus macrocarpus 
Asphodelus refractus 
Asphodelus tenuifolius