Ballota hirsuta subsp. hirsuta

Ballota nigra subsp. foetida

Bassia scoparia

Bauhinia variegata

Beaucarnea recurvata

Bellardia trixago

Bellis annua

Bellis sylvestris

Berberis hispanica subsp. hispanica

Berberis thunbergii

Beta macrocarpa

Beta vulgaris

Biarum dispar

Bidens frondosa

Bidens pilosa

Bidens subalternans

Bifora testiculata

Biscutella auriculata

Biscutella lucentina

Biscutella montana

Biscutella rosularis

Biscutella stenophylla subsp. stenophylla

Bituminaria bituminosa

Blackstonia grandilfora

Blackstonia imperfoliata

Blackstonia perfoliata

Bombycilaena discolor

Bombycilaena erecta

Borago officinalis

Bougainvillea glabra

Bougainvillea spectabilis

Brachychiton acerifolius

Brachychiton populneus

Brachypodium phoenicoides

Brachypodium retusum

Brassica fruticulosa subsp. cossoniana

Brassica napus

Brassica oleracea

Brassica repanda subsp. blancoana

Brassica repanda subsp. maritima

Brassica tournefortii

Briza maxima

Bromus diandrus

Bromus fasciculatus

Bromus hordeaceus subsp. hordeaceus

Bromus madritensis

Bromus rubens

Bromus squarrosus

Bromus tectorum

Broussonetia papyrifera

Bryonia dioica

Buddleja davidii

Bufonia perennis subsp. tuberculata

Buglossoides arvensis

Buglossoides purpurocaerulea

Bupleurum baldense

Bupleurum fruticescens subsp. fruticescens

Bupleurum gibraltaricum

Bupleurum rigidum subsp. rigidum

Bupleurum rotundifolium

Bupleurum semicompositum

Buxus sempervirens subsp. sempervirens