Strict Forget-Me-Not 
Strigose Bugloss 
Tall bluebells 
Tall fringed bluebells 
Tarweed fiddleneck 
Thompson's cat's eye 
Torrey's cryptantha 
Tree Heliotrope 
Trichodesma boissieri 
Trichodesma ehrenbergii 
Trichodesma zeylanica 
Turnsole 
Viborera 
Vipers Bugloss 
Virginia Bluebell 
Water Forget-Me-Not 
Western stoneseed 
Wild Canterbury Bells 
Wild Comfrey 
Wingnut cryptantha 
Woodland Forget-Me-Not