United States

agróstide común

Agrostis capillaris

Águila cabeza blanca

Haliaeetus leucocephalus

Águila real

Aquila chrysaetos

Near Threatened

Alistonia

Alstonia scholaris

Alondra Común

Alauda arvensis

Amazona Coroniamarilla

Amazona ochrocephala

All Species in United States

Biting midge

Forcipomyia hygrophila

Biting Stonecrop

Sedum acre

Bitter Beech Bolete

Caloboletus calopus

Bitterberry

Shepherdia canadensis

Bittercress

Cardamine hirsuta

Bitter Flax

Linum catharticum

Endangered

Bitternut

Carya cordiformis

Bitter-Root

Apocynum androsaemifolium

Black and gold bumble bee

Bombus auricomus

Black arion

Arion ater

Black Ash

Fraxinus nigra

Critically Endangered

Black-Banded Soft-Winged Flower Beetle

Anthocomus equestris

Black-Beaked Green Weevil

Hypera nigrirostris

Black Woodscript Lichen

Xylographa parallela

Data Deficient

Bladder Campion

Silene latifolia

Bladder Fern

Cystopteris fragilis

Bladder Ketmia

Hibiscus trionum

Bladder Sedge

Carex vesicaria

Bladder Stalks

Physalacria inflata

Blake'S Aster

Oclemena blakei

Extinct

Bland Sedge

Carex blanda

Bland Sweet Cicely

Osmorhiza claytonii

Blasdell'S Laurentian Bladder Fern

Cystopteris laurentiana

Bleeding Fairy Helmet

Mycena haematopus

Bleeding-Heart

Dicentra formosa

Bleeding Oak Crust

Stereum gausapatum

Blewit

Lepista nuda

Blindeyes

Papaver dubium

Blister Buttercup

Ranunculus sceleratus

Blistered Cup

Peziza vesiculosa

Blistered Jelly Lichen

Collema nigrescens

Blistered Jellyskin Lichen

Leptogium corticola

Blistered Rock Tripe

Umbilicaria hyperborea

Extinct

Blistered Toadskin Lichen

Lasallia pustulata

Blistered Woodwax

Hygrophorus pustulatus

Blister Flower

Ranunculus bulbosus

Blond Field Ant

Lasius flavus

Blood Iris

Iris sanguinea

Blood Milkwort

Polygala sanguinea

Blood Ragweed

Ambrosia trifida

Blood root

Justicia secunda

Bloodtwig dogwood

Cornus sanguinea

blood worm

Lumbricus rubellus

Bloody-Butcher

Pulmonaria officinalis

Bloody geranium

Geranium sanguineum

Bloody-Heart Lichen

Mycoblastus sanguinarius

Critically Endangered

bloody-red shrimp

Hemimysis anomala

Black Stubble Lichen

Calicium abietinum

Endangered

Black Swallowtail

Papilio polyxenes

Black Tar Spot

Rhytisma acerinum

Blackthread Lichen

Placynthium nigrum

Endangered

black-toothed nodding moss

Pohlia melanodon

Black Vine Weevil

Otiorhynchus sulcatus

Black wattle

Acacia mangium

Blackwell Switch Grass

Panicum virgatum

Black-Widow

Geranium phaeum

black willow bark louse

Chionaspis salicis

Blue Bead-Lily

Clintonia borealis

Blue-Bean

Lupinus perennis