birthwort family
— Noun
– English
～ family of birthworts (including wild ginger)
bird family
— Noun
– English
～ a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings
birch family
— Noun
– English
～ monoecious trees and shrubs (including the genera Betula and Alnus and Carpinus and Corylus and Ostrya and Ostryopsis)
bladdernut family
— Noun
– English
～ a family of dicotyledonous plants of order Sapindales found mostly in the north temperate zone
bladderwort family
— Noun
– English
～ carnivorous aquatic or bog plants: genera Utricularia, Pinguicula, and Genlisea
bloodwort family
— Noun
– English
～ some genera placed in family Liliaceae
bellflower family
— Noun
– English
～ family of plants of the order Campanulales; in some classifications includes Lobeliaceae
beech family
— Noun
– English
～ chiefly monoecious trees and shrubs: beeches; chestnuts; oaks; genera Castanea, Castanopsis, Chrysolepis, Fagus, Lithocarpus, Nothofagus, Quercus
begonia family
— Noun
– English
～ monoecious succulent herbs or shrubs of tropical and warm regions especially America
bean-caper family
— Noun
– English
～ small trees, shrubs, and herbs of warm arid and saline regions; often resinous; some poisonous: genera Zygophyllum, Tribulus, Guaiacum, Larrea
buckthorn family
— Noun
– English
～ trees and shrubs usually thorny bearing drupaceous fruit many having medicinal value
buckbean family
— Noun
– English
～ a dicotyledonous family of marsh plants of order Gentianales
buckwheat family
— Noun
– English
～ a family of plants of order Polygonales chiefly of the north temperate zone; includes the buckwheats