ma, Sea Wormwood; A. vulgaris, Common Mugwort.
Artocarpus, Bread-fruit-tree.
Arum maculatum, Wake Robin.
Arundo, Reed; A. arenaria, Matweed; A. calamagrostis, Small Reed; A. epigeios, Wood Reed; A. phragmites, Common Reed.
Asarum Europæum, Asarabacca.
Aspalathus, African Broom.
Asperugo procumbens, Catchweed.
Asperula odorata, Sweet Woodroof.
Asphodelus luteus, Common Yellow Asphodel; A. ramosus, Branching Asphodel.
Asplenium, Spleenwort; A. scolopendrium, Hart's-tongue; A. Trichomanes, Common Maiden-hair.
Aster Tripolium, Sea Star-wort.
Astragalus, Milk-Vetch; A. glycyphyllos, Common Milk-Vetch; A. Tragacantha, Tragacanth-tree.
Atriplex hastata, Wild Orache; A. laciniata, Frosted Orache; A. littoralis, Grass Orache; A. portulacoides, Shrubby Orache.
Atropa Bella donna, Deadly Nightshade; A. mandragora, Mandrake.
Avena, Oat; A. elatior, Tall Oat-grass; A. fatua, Bearded Wild Oats; A. flavescens, Yellow Oat; A. nuda, Naked Oat; A. pratensis, Meadow Oat; A. pubescens, Rough Oat; A. sativa, Common Oat; A. stipifomis, Skegs.
Balæna mysticetus, Common Whale.
Ballota nigra. Black Horehound.
Barytes, Ponderous Spar.
Bellis perennis, Common Daisy.
Berberis vulgaris, Common Berberry.
Beta, Beet; B. albissima, Mangel-wurzel; B. hortensis, Common White Beet; B. maritima, Sea Beet.
Betula, Alder-tree; B. alba, Common Birch; B. alnus, Common Alder-tree; B. lenta, Canada Birch; B. nana, Dwarf Alder-tree.
Bidens cernua, Nodding Marygold.
Blatta orientalis, Eastern Cockroach.
Boletus, Spunk; B. hirsutus, ShaggySpunk; B. igniarius, Touch-wood.
Borago officinalis, CommonBorage.
Botrytes, Cauliflower.
Brassica, Cabbage; B. alpina, Savoy; B. campestris, Field Cabbage; B. Eruca, Rocket; B. Monensis, Isle-of-Man-Cabbage; B. muralis, Wall Cabbage; B. Napus Rape; B. oleracea, Sea-colewort, B. rapa, Turnip.
Briza media, Common Quaking Grass.
Bromelia ananas, Common Pine-apple.
Bromus mollis, Soft Brome-grass; B. pinnatus, Spiked Heath Brome-grass; B. Secalinus, Smooth Rye Brome-grass.
Bryonia alba, White Bryony.
Bubon gummiferum, Gum-bearing Macedonian Parsley.
Bunium bulbo-castanum, Great Earth-nut; B. flexuosum, Common Earth-nut.
Buxus angustifolia, Narrow-leaved Box; B. semper-virens CommonBox; B. suffruticosa, DutchBox.
Byssus candelaris, Yellow Powder-wort.
Cacalia suaveolens, AlpineColt's-foot.
Cactus cochenillifer, Indian fig-tree.
Cadmia Fossilis, Calamine.
Callitriche autumnalis, Autumnal Star-grass; C. verna, Vernal Star-grass.