Associated organism genera: Babiana [5 taxa], Baccharis [167 taxa], Bacidia [73 taxa], Bacillopeltis [1 taxon], Bacillus [5 taxa], Backhousia [2 taxa], Bacopa [1 taxon], Bactris [79 taxa], Bactrodesmiella [13 taxa], Bactrodesmium [6 taxa], Badhamia [6 taxa], Badiera [1 taxon], Baeckea [3 taxa], Baeomyces [15 taxa], Baeospora [1 taxon], Baeothryon [1 taxon], Baeturia [7 taxa], Bagnisiella [2 taxa], Baissea [1 taxon], Balaniopsis [3 taxa], Balanites [7 taxa], Balansia [1 taxon], Balansiopsis [18 taxa], Balanus [1 taxon], Balfourodendron [1 taxon], Baliospermum [5 taxa], Balladyna [7 taxa], Balladynastrum [2 taxa], Balladynopsis [1 taxon], Ballota [220 taxa], Baloghia [2 taxa], Balsamocitrus [7 taxa], Balsamodendrum [1 taxon], Baltimora [3 taxa], Bambusa [706 taxa], Banara [8 taxa], Bandicota [2 taxa], Banisteria [45 taxa], Banksia [54 taxa], Baphia [22 taxa], Baptisia [1 taxon], Barbacenia [1 taxon], Barbarea [23 taxa], Barbieria [1 taxon], Barilius [2 taxa], Barkhausia [31 taxa], Barleria [33 taxa], Barnadesia [3 taxa], Barnettia [47 taxa], Barosma [12 taxa], Barringtonia [29 taxa], Bartalinia [4 taxa], Bartsia [2 taxa], Barya [2 taxa], Baryxylum [3 taxa], Basanacantha [5 taxa], Basella [26 taxa], Basidiodendron [1 taxon], Basilepta [3 taxa], Basilicum [1 taxon], Bassia [14 taxa], Bastardia [7 taxa], Bastardiopsis [1 taxon], Batemannia [1 taxon], Batistamnus [99 taxa], Batistina [3 taxa], Batistospora [6 taxa], Batodendron [1 taxon], Battarrina [1 taxon], Bauhinia [379 taxa], Beaufortia [1 taxon], Beaumontia [3 taxa], Beauveria [2 taxa], Becium [11 taxa], Beckeropsis [10 taxa], Beckmannia [9 taxa], Beelia [24 taxa], Begonia [73 taxa], Behaimia [1 taxon], Behnia [28 taxa], Beilschmiedia [141 taxa], Belainopsis [6 taxa], Belairia [6 taxa], Belamcanda [6 taxa], Bellevalia [27 taxa], Bellis [17 taxa], Bellucia [10 taxa], Beloperone [1 taxon], Beltrania [37 taxa], Beltraniella [16 taxa], Beltraniopsis [28 taxa], Bembidium [3 taxa], Bemisia [6 taxa], Bena [5 taxa], Benedictella [1 taxon], Benekea [2 taxa], Benincasa [23 taxa], Berberis [911 taxa], Berchemia [12 taxa], Bergenia [7 taxa], Berkheya [75 taxa], Berkleasmium [3 taxa], Berlesiella [7 taxa], Berlinia [4 taxa], Bernardia [1 taxon], Bersama [30 taxa], Berteroa [71 taxa], Bertholletia [75 taxa], Bertia [3 taxa], Besleria [5 taxa], Beta [593 taxa], Betonica [91 taxa], Betula [2505 taxa], Bewsia [6 taxa], Biatorella [1 taxon], Bidens [491 taxa], Biebersteinia [2 taxa], Bifrenaria [1 taxon], Bifusella [1 taxon], Bigelowia [2 taxa], Bignonia [26 taxa], Bihai [6 taxa], Bilbergia [1 taxon], Bilimbia [4 taxa], Billbergia [4 taxa], Billia [2 taxa], Biophomopsis [10 taxa], Biophytum [6 taxa], Bioporthe [2 taxa], Biota [11 taxa], Bipolaris [7 taxa], Bischofia [7 taxa], Biscogniauxia [14 taxa], Biscutella [1 taxon], Biserrula [1 taxon], Bisgoeppertia [3 taxa], Bison [3 taxa], Bispora [10 taxa], Bisporella [7 taxa], Bivonaea [1 taxon], Bixa [57 taxa], Bjerkandera [2 taxa], Blainvillea [8 taxa], Blakea [5 taxa], Blastobotrys [3 taxa], Blastotrichum [2 taxa], Blechnum [55 taxa], Blechum [49 taxa], Bledius [1 taxon], Blepharis [12 taxa], Blepharocalyx [4 taxa], Bletia [18 taxa], Blighia [34 taxa], Blosyrus [1 taxon], Blumea [26 taxa], Blumeria [8 taxa], Blysmus [2 taxa], Blyttiomyces [3 taxa], Bobartia [2 taxa], Bocconia [12 taxa], Boea [1 taxon], Boehmeria [50 taxa], Boenninghausenia [1 taxon], Boerhaavia [1 taxon], Boerhavia [73 taxa], Boerlagella [1 taxon], Bogenhardia [1 taxon], Boisduvalia [2 taxa], Bolax [1 taxon], Bolbitis [1 taxon], Bolboschoenus [22 taxa], Boldoa [46 taxa], Boletopsis [1 taxon], Boletus [53 taxa], Boletus [6 taxa], Bomarea [47 taxa], Bomaria [1 taxon], Bombacopsis [12 taxa], Bombax [56 taxa], Bombyx [14 taxa], Bonamia [2 taxa], Bonaria [4 taxa], Boopis [5 taxa], Boquila [1 taxon], Borago [15 taxa], Borassus [67 taxa], Borbonia [2 taxa], Boronia [1 taxon], Borrera [7 taxa], Borreria [169 taxa], Borrichia [5 taxa], Bos [1513 taxa], Boscia [4 taxa], Bosea [1 taxon], Boselaphus [59 taxa], Bosistoa [1 taxon], Bosquiea [13 taxa], Boswellia [15 taxa], Bothriocera [4 taxa], Bothriochloa [234 taxa], Bothynoderes [1 taxon], Botryobasidium [6 taxa], Botryodiplodia [2 taxa], Botryosphaeria [31 taxa], Botryosporium [2 taxa], Botryotinia [15 taxa], Botrytis [5 taxa], Bouchardatia [1 taxon], Bouchea [9 taxa], Bougainvillea [93 taxa], Bourreria [17 taxa], Boussingaultia [2 taxa], Bouteloua [15 taxa], Bowdichia [11 taxa], Bowkeria [5 taxa], Bowlesia [2 taxa], Brabejum [15 taxa], Brachiaria [568 taxa], Brachinus [1 taxon], Brachistus [2 taxa], Brachybotrys [3 taxa], Brachychiton [4 taxa], Brachycome [5 taxa], Brachyglottis [5 taxa], Brachylaena [57 taxa], Brachylepis [1 taxon], Brachynus [1 taxon], Brachyotum [1 taxon], Brachypodium [104 taxa], Brachyramphus [1 taxon], Brachysporiella [19 taxa], Brachysporium [33 taxa], Brachystegia [31 taxa], Brachythecium [2 taxa], Bracon [1 taxon], Brahea [1 taxon], Brahmina [1 taxon], Brandisia [1 taxon], Brasiliomyces [1 taxon], Brassaia [3 taxa], Brassaiopsis [4 taxa], Brassavola [6 taxa], Brassia [1 taxon], Brassica [1135 taxa], Brassolis [1 taxon], Bravaisia [4 taxa], Bredemeyera [8 taxa], Brefeldiella [2 taxa], Bremia [22 taxa], Bretschneidera [1 taxon], Brevicoryne [6 taxa], Breweria [2 taxa], Breynia [10 taxa], Brickellia [3 taxa], Bridelia [45 taxa], Brigantiaea [1 taxon], Brillantaisia [8 taxa], Briosia [1 taxon], Briza [14 taxa], Bromelia [66 taxa], Bromopsis [6 taxa], Bromus [491 taxa], Brontispa [5 taxa], Brooksia [5 taxa], Brosimum [44 taxa], Broughtonia [1 taxon], Broussonetia [44 taxa], Browallia [10 taxa], Brownea [8 taxa], Brownlowia [1 taxon], Bruguiera [13 taxa], Brumea [3 taxa], Brunchorstia [42 taxa], Brunellia [8 taxa], Brunfelsia [14 taxa], Brunnera [1 taxon], Brunsvigia [5 taxa], Brya [12 taxa], Bryochiton [7 taxa], Bryonia [7 taxa], Bryonopsis [4 taxa], Bryophyllum [13 taxa], Bryoria [2 taxa], Bryum [6 taxa], Bubalus [31 taxa], Bubonium [1 taxon], Buchanania [17 taxa], Buchenavia [80 taxa], Buchloë [1 taxon], Buchnera [3 taxa], Bucida [142 taxa], Bucklandia [4 taxa], Buddleja [138 taxa], Budleia [2 taxa], Buellia [9 taxa], Buelliella [2 taxa], Buglossoides [59 taxa], Bulbine [21 taxa], Bulbinella [2 taxa], Bulbophyllum [2 taxa], Bulbostylis [13 taxa], Bullaserpens [16 taxa], Bulliardella [2 taxa], Bulnesia [1 taxon], Bumelia [12 taxa], Bunchosia [13 taxa], Bungea [1 taxon], Bunias [16 taxa], Bunium [13 taxa], Bupleurum [91 taxa], Burchellia [28 taxa], Burkea [4 taxa], Bursera [151 taxa], Buschia [1 taxon], Butea [75 taxa], Buteo [1 taxon], Butia [21 taxa], Butomus [6 taxa], Butyrospermum [1 taxon], Buxus [476 taxa], Byrsomyces [63 taxa], Byrsonima [236 taxa], Byssocallis [4 taxa], Byssoloma [200 taxa], Byssopeltis [9 taxa], Byssostilbe [2 taxa], Bystropogon [3 taxa], Byttneria [15 taxa]