Common Name - -	Family : Order
Baby sage - -	Lamiaceae : Lamiales
Balsa - -	Malvaceae : Malvales
Banana shrub - -	Magnoliaceae : Magnoliales
Barbados shrub - -	Cactaceae : Caryophyllales
Barbasco - -	Theophrastaceae : Ericales
Bashful four o'clock - -	Nyctaginaceae : Caryophyllales
Basil thyme - -	Lamiaceae : Lamiales
Bearded catasetum - -	Orchidaceae : Asparagales
Bee orchid - -	Orchidaceae : Asparagales
Berlandier's trumpets - -	Nyctaginaceae : Caryophyllales
Bertoloni's ophrys - -	Orchidaceae : Asparagales
Bicolored cattleya - -	Orchidaceae : Asparagales
Big leaf magnolia - -	Magnoliaceae : Magnoliales
Bigelow's desert four o'clock - -	Nyctaginaceae : Caryophyllales
Big-leaf lupine - -	Fabaceae : Fabales
Bird-beak orchid - -	Orchidaceae : Asparagales
Birds-eye primrose - -	Primulaceae : Ericales
Bitter melon - -	Cucurbitaceae : Cucurbitales
Black bugbane - -	Ranunculaceae : Ranunculales
Black calla lily - -	Araceae : Alismatales
Black ironwood - -	Rhamnaceae : Rhamnales
Black locust - -	Fabaceae : Fabales
Black olive - -	Oleaceae : Lamiales
Blackish maxillaria - -	Orchidaceae : Asparagales
Bladder campion - -	Caryophyllaceae : Caryophyllales
Bladder campion - -	Caryophyllaceae : Caryophyllales
Blue bollea - -	Orchidaceae : Asparagales
Blue candle - -	Cactaceae : Caryophyllales
Blue fortune - -	Lamiaceae : Lamiales
Blue giant hyssop - -	Lamiaceae : Lamiales
Bolwarra - -	Eupomatiaceae : Magnoliales
Bouncing bet - -	Caryophyllaceae : Caryophyllales
Brewer's clarkia - -	Onagraceae : Myrtales
Broad bean - -	Fabaceae : Fabales
Brown boronia - -	Rutaceae : Sapindales
Bud blast - -	Orchidaceae : Asparagales
Bumblebee orchid - -	Orchidaceae : Asparagales
Burnet saxifrage - -	Apiaceae : Apiales
Butterfly bush - -	Scrophulariaceae : Lamiales