Alfalfa Dodder 
Alga Jania virgata 
Algerian Iris 
Alhagi graecorum 
Alkali Goldenbush 
Alkanet 
Alkanna cordifolia 
Alkanna galilaea 
Alkanna orientalis 
Alkanna primuliflora 
Alkanna stribrnyi 
Alkanna strigosa 
Allamanda angustifolia 
Allegheny blackberry 
Allegheny Monkeyflower 
Allionia incarnata 
Allium aflatunense 
Allium akirense 
Allium artemisietorum 
Allium aschersonianum 
Allium basalticum 
Allium callimischon 
Allium canariense 
Allium carmeli