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A, C, D, E, F, G, H, I, J, L, M, N, O, P, R, S, T, U, V, Y, Z
| Bacopa (Bacopa monnieri) | Balota negra (Ballota nigra, L) |
| Bambú (Bambusa arundinacea) | Bardana (Arctium lappa, L) |
| Bardana tomentosa (Arctium tomentosum) | Barleria (Barleria lupulina) |
| Beleño negro (Hyoscyamus niger) | Belladona (Atropa bella-donna, L) |
| Berro de agua (Nasturtium officinalis, L) | Betónica (Stachys officinalis, L) |
| Bidens aurea | Bistorta (Polygonum bistorta, L) |
| Bixa (Bixa orellana) | Boj (Buxus sempervirens, L) |
| Boldo (Peumus boldus ) | Bolsa de pastor (Capsella bursa-pastoris, L) |
| Borraja (Borago officinalis, L) | Branca (Heracleum sphondylium) |
| Brayera (Brayera anthelmintica, Hagenia abyssinica) | Brezo (Calluna vulgaris, L) |
| Brionia (Bryonia alba) | Brucea (Brucea sumatrana) |
| Bruneta vulgar (Prunella vulgaris, L) | Buchu (Barosma betulina) |
| Bufera (Whitania somnifera) | Boswellia serrata |
| Butea (Butea superba) | |
