Japanese Mazus 
Jerusalem sage 
Jerusalem salvia 
Jezreel Valley Sage 
Justicia laevilinguis 
Justicia pectoralis 
Karvi 
Kashmir Tree 
Kellogg's Monkeyflower 
Kickxia acerbiana 
Kickxia aegyptiaca 
Kickxia cirrhosa 
Kickxia elatine 
Kickxia floribunda 
Kickxia macilenta 
Kickxia petrana 
Kickxia spartioides 
Kohleria affinis 
Kohleria hirsuta 
Kohleria spicata 
Kohleria stuebeliana 
Kohleria tigridia 
Kohleria trianae 
Kohleria villosa