B. alba

B. alba may refer to:


 * Baptisia alba, the white wild indigo or white false indigo, a herbaceous plant species native from central and eastern North America
 * Basella alba, the Malabar spinach, a perennial vine species found in the tropics
 * Bidens alba, an Asteraceae plant species.
 * Bryonia alba, the white bryony, a vigorous Eurasian vine species introduced into Western North America