Jump to genus: Baccharis, Bacopa, Baeomyces, Baeospora, Ballota, , Balsamorhiza, Barbarea, Bassia, Battarrea, Beckmannia, Bellardia, Bellemerea, Bellis, Berberis, Bergia, Berteroa, Berula, Beta, Betula, , Bidens, Biscogniauxia, Bisporella, Bistorta, Bjerkandera, Blepharipappus, Blitum, , Boechera, Bolandra, Bolbitius, Bolboschoenus, Boletellus, Boletopsis, Boletus, Boltonia, Bondarzewia, Borago, , Botrychium, Botrypus, Bouteloua, Bovista, Boykinia, Brachypodium, Brasenia, , Brassica, , Brewerimitella, Brickellia, Bridgeoporus, Brigantiaea, Briza, Brodiaea, Bromus, Bryonia, Bryoplaca, Bryoria, Buchwaldoboletus, Buckiella, Buddleja, , Buellia, Buglossoides, Bulgaria, Butomus, Byssoloma, Byssomerulius, Byssonectria
