Aaronsohnia factorovskyi 
Acantholepis orientalis 
Achillea cretica 
Adenostyles alpina 
Aetheopappus pulcherrimus 
Alpine lake false dandelion 
American bellflower 
American Saw-wort 
American trailplant 
Angled-stem Dampiera 
Annual fleabane 
Annual Ragweed 
Antennaria howellii 
Antennaria media 
Antennaria plantaginifolia 
Anthemis amblyolepis 
Anthemis pestalozzae 
Anthemis rosea 
Anthemis tomentosa 
Anvillea radiata 
Arctic sweet coltsfoot 
Argyranthemum frutescens 
Arnica latifolia 
Arnica parryi