Index
- Baccharis angustifolia, false-willow
- Baccharis glomeruliflora, silverling
- Baccharis halimifolia, groundsel bush
- Bacopa caroliniana, blue waterhyssop
- Bacopa monnieri, smooth waterhyssop
- Balduina angustifolia, yellow buttons
- Balduina uniflora, one-flower honeycomb-head
- Bambusa multiplex, hedge bamboo
- Baptisia alba, white wild indigo
- Baptisia lanceolata, gopherweed
- Baptisia lecontii, wild indigo
- Baptisia megacarpa, Apalachicola wild indigo
- Baptisia simplicifolia, scareweed
- Barleria cristata, crested Philippine-violet
- Batis maritima, saltwort
- Bauhinia purpurea, fall orchid-tree, butterfly-tree
- Bauhinia variegata, orchid-tree
- Begonia cucullata, wax begonia, club begonia
- Bejaria racemosa, tarflower
- Berchemia scandens, rattan vine
- Berlandiera pumila, red-centered greeneyes, soft greeneyes
- Berlandiera subacaulis, common greeneyes, Florida greeneyes
- Betula nigra, river birch
- Bidens alba var. radiata, begger-ticks
- Bidens bipinnata, Spanish needles
- Bidens laevis, bur-marigold, wild goldenglow
- Bidens mitis, begger-ticks
- Bigelowia nudata, rayless golden-rod
- Bigelowia nudata subsp. australis, rayless golden-rod
- Bignonia capreolata, crossvine
- Blechnum occidentale, sinkhole fern
- Blechnum serrulatum, swamp fern
- Bletia purpurea, pinepink
- Blutaparon vermiculare, samphire
- Boehmeria cylindrica, small-spike false-nettle
- Boerhavia diffusa, red spiderling, wineflower
- Boerhavia erecta, erect spiderling
- Boltonia diffusa, smallflowered doll's daisy
- Bonamia grandiflora, Florida bonamia
- Borrichia arborescens, sea ox-eye daisy
- Borrichia frutescens, sea daisy
- Botrychium biternatum, southern grapefern
- Botrychium virginianum, rattlesnake fern
- Bourreria cassinifolia, little strongbark
- Bourreria succulenta, strongbark
- Brasenia schreberi, water shield
- Brassica nigra, black mustard
- Bromelia penguin, pinguin, maya
- Broussonetia papyrifera, paper-mulberry
- Brunnichia ovata, American buckwheatvine
- Buchnera americana, blueheart
- Bulbostylis ciliatifolia, hairy bulbostylis
- Bulbostylis warei, Ware's hairsedge
- Burmannia biflora, northern burmannia
- Burmannia capitata, southern burmannia
- Bursera simaruba, gumbo-limbo
- Byrsonima lucida, locustberry