Baccharis trinervis 
Baccharoides kirungae 
Badlands Mule-ears 
Bahiopsis parishii 
Balsamorhiza hookeri 
Barberton daisy 
Beaked Hawksbeard 
Bear's Foot 
Bearded Creeper 
Beggar Ticks 
Bellis annua 
Bidens andicola 
Bidens reptans 
Bidens triplinervia 
Bietou 
Bietou 
Big sagebrush 
Bigelow Sagebrush 
Bigelow's sneezeweed 
Billy buttons 
Billygoat-weed 
Birdcage Thistle 
Bitter Fleabane 
Black-eyed Susan