United Kingdom

black Sea jellyfish

Blackfordia virginica

Black-Seed Proso Millet

Panicum miliaceum

black slug

Milax nigricans

Black soldier fly

Hermetia illucens

Blackspot hornpoppy

Glaucium corniculatum

Black Spruce

Picea mariana

Bithynian vetch

Vicia bithynica

Bitternut

Carya cordiformis

Bitter Vetch

Vicia ervilia

Black bamboo

Phyllostachys nigra

Bladder Campion

Silene latifolia

Bladdernut

Staphylea pinnata

Bleeding-Heart

Dicentra formosa

Blindeyes

Papaver dubium

Blood Ragweed

Ambrosia trifida

Bloody-Butcher

Pulmonaria officinalis

Bloody geranium

Geranium sanguineum

bloody-red shrimp

Hemimysis anomala

black-tailed jackrabbit

Lepus californicus

black-tailed prairie dog

Cynomys ludovicianus

Black-throated Tit

Aegithalos concinnus

Black Vine Weevil

Otiorhynchus sulcatus

Black wattle

Acacia mearnsii

Blackwell Switch Grass

Panicum virgatum

Black-Widow

Geranium phaeum

Blackwood

Acacia melanoxylon

Blossom-headed Parakeet

Psittacula roseata

Blotched Spurge

Euphorbia maculata

Blue Cardinal Flower

Lobelia siphilitica

Blue Comfrey

Symphytum uplandicum

Blue Corn-lily

Aristea ecklonii

Bluecrown passionflower

Passiflora caerulea

Blue Crystalwort

Riccia crystallina

Blue Eared-Pheasant

Crossoptilon auritum

Blue Eryngo

Eryngium planum

Boar Thistle

Cirsium arvense

Boccone's sandspurry

Spergularia bocconei

bogan-flea

Calotis hispidula

Bog Arum

Calla palustris

Bog Loosestrife

Lysimachia terrestris

Bohena Beauty

Cenchrus longispinus

boisduval scale

Diaspis boisduvalii

Blue-Eyed Grass

Sisyrinchium angustifolium

blue fescue

Festuca glauca

Blue Flag

Iris versicolor

blue horntail

Sirex juvencus

Blue Horntail

Sirex cyaneus

Blue Iris

Iris spuria

Blue Jacob'S Ladder

Polemonium caeruleum

Blue leadwood

Ceratostigma plumbaginoides

Blue Lettuce

Lactuca tatarica

Blue Riverdamsel

Pseudagrion microcephalum

Blue Rock-Thrush

Monticola solitarius

blue-stem willow

Salix irrorata

Blue-tailed Bee-eater

Merops philippinus

Blue woodruff

Asperula arvensis

Blumeriella jaapii

Bolbitius coprophilus

Book louse

Liposcelis pearmani

Book louse

Liposcelis corrodens