Baby's-Breath 
Barrier saltbush 
Bassia arabica 
Bassia eriophora 
Beaded samphire 
Beautiful Bougainvillea 
Beavertail cactus 
Beet 
Berry Catchfly 
Big Chickweed 
Bistorta bistortoides 
Bitterroot 
Black-Bindweed 
Black-spined Pricklypear 
Bladder Campion 
Bladder Dock 
Blind prickly pear 
Blinks 
Blood amaranth 
Bloodberry 
Bloody dock 
Blue Myrtle-Cactus 
Boerhavia boissieri 
Boerhavia coccinea