Baccharis

Ballota

Baptisia

Begonia

Belamcanda

Bellis

Berberidopsis

Berberis

Berchemia

Bergenia

Betonica

Betula

Bidens

Billardiera

Bischofia

Blechnum

Blepharocalyx

Blephilia

Boehmeria

Bolboschoenus

Bouteloua

Brachyelytrum

Brachyglottis

Briza

Broussonetia

Brunfelsia

Brunnera

Buddleja

Buglossoides

Buphthalmum

Buxus