Black-eyed Susan 
Blackjack 
Blochman's Ragwort 
Blue Globe Thistle 
Blue Mistflower 
Blue thistle 
Blue-and-white Daisybush 
Blue-eyed African daisy 
Bluestem Goldenrod 
Bog Goldenrod 
Bold-leaf Launaea 
Bonebract 
Bracera 
Brachyscome multifida 
Brazilian Bachelor's Button 
Bristly thistle 
Brittlebush 
Broad-leaved Goldenrod 
Brocchia cinerea 
Brown-eyed Susan 
Brownplume Wirelettuce 
Bull thistle 
Butterbur 
Butterweed