Australia

Black Willow

Salix nigra

Blotched Spurge

Euphorbia maculata

Blue Chamomile

Matricaria chamomilla

Blue Comfrey

Symphytum uplandicum

Blue Corn-lily

Aristea ecklonii

Bluecrown passionflower

Passiflora caerulea

Boar Thistle

Cirsium arvense

Boatlily

Tradescantia spathacea

Bodhi tree

Ficus religiosa

Bog Rush

Juncus effusus

Bohena Beauty

Cenchrus longispinus

Bokhara Clover

Melilotus albus

blue-ginger

Dichorisandra thyrsiflora

Blue hound's tongue

Cynoglossum creticum

Blue Iris

Iris spuria

blue lupine

Lupinus pilosus

Blue Sedge

Carex flacca

blue wiss

Teramnus labialis

Blue woodruff

Asperula arvensis

Borrer's Saltmarsh-Grass

Puccinellia fasciculata

Botrytella micromora

Bottle gourd

Lagenaria siceraria

Bouncing Bet

Saponaria officinalis

Box-elder, Ash-leaved maple

Acer negundo

Brazilian joyweed

Alternanthera brasiliana

Brazilian nightshade

Solanum seaforthianum

Briar Rose

Rosa rubiginosa

Bridal broom

Retama monosperma

Bridal-Wreath

Spiraea prunifolia

Bright-Blue Speedwell

Veronica serpyllifolia

Brachionid rotifer

Brachionus forficula

Bracken

Pteridium aquilinum

Bradford Pear

Pyrus calleryana

bramble leafhopper

Ribautiana tenerrima

branched bur-reed

Sparganium erectum

Branched Centaury

Centaurium pulchellum

Branched Horsetail

Equisetum ramosissimum

Branching Bryozoan

Schizoporella unicornis

Branching Campion

Silene dichotoma

Bristle Pigeon Grass

Setaria verticillata

Bristly dogstail grass

Cynosurus echinatus

Bristly Hawk'S-Beard

Crepis setosa

Brittle Willow

Salix fragilis

Broad-fruited Cornsalad

Valerianella rimosa

Broad-leaf arrowhead

Sagittaria platyphylla

Broad-Leaf Everlasting Pea

Lathyrus latifolius

Broadleaf Pondweed

Stuckenia pectinata

Broadleaf wild leek

Allium ampeloprasum

Broad-Leaved Cattail

Typha latifolia

broad-leaved cutweed

Filago pyramidata

Broadleaved pepperweed

Lepidium latifolium

Broad Leaved Spurge

Euphorbia platyphyllos

Bronco Grass

Bromus tectorum

Broom

Cytisus scoparius

Broomleaf toadflax

Linaria genistifolia

Broom Sedge

Carex scoparia

Brown Knapweed

Centaurea jacea

Burvine

Verbena urticifolia

Bush Hawthorn

Crataegus crus-galli

bushy matgrass

Lippia alba