United States

Aconite

Aconitum napellus

Critically Endangered

Admiralty Island Meadow Vole (Admiraltiae)

Microtus pennsylvanicus

Agrimony

Agrimonia eupatoria

Near Threatened

Ajuga

Ajuga reptans

Endangered

Alder

Alnus glutinosa

Alder leaf beetle

Agelastica alni

Alder Spittlebug

Aphrophora alni

All Species in United States

Broad-Leaved Pondweed

Potamogeton natans

Broad-Leaved Purple Coneflower

Echinacea purpurea

Broad-Leaved Reedgrass

Cinna latifolia

Near Threatened

Broad-Leaved Speedwell

Veronica austriaca

Broad Leaved Spurge

Euphorbia platyphyllos

Near Threatened

Broad-Leaved Toothwort

Cardamine diphylla

Broad-Leaved Woolly Sedge

Carex pellita

Broad Scalewort

Porella obtusata

Endangered

Broadtooth lady's mantle

Alchemilla subcrenata

Broad-winged Hawk

Buteo platypterus

Brome Hummock Sedge

Carex bromoides

Bromeliad

Werauhia sanguinolenta

Bronco Grass

Bromus tectorum

Bronze Birch Borer

Agrilus anxius

Bronze Ground Beetle

Carabus nemoralis

Bronze Sedge

Carex foenea

Bronze Willowherb

Epilobium coloratum

Brook Flatsedge

Cyperus bipartitus

Brook Floater

Alasmidonta varicosa

Brooklime

Veronica beccabunga

Brook-Side Alder

Alnus serrulata

Brook-Side Feather-Moss

Hygroamblystegium fluviatile

Critically Endangered

Brook Snaketail

Ophiogomphus aspersus

Brook Stippleback Lichen

Dermatocarpon luridum

Critically Endangered

Brook Wedge Mussel

Alasmidonta viridis

Brookweed

Samolus valerandi

Broom

Cytisus scoparius

Broom aphid

Aphis cytisorum

Broom Beardgrass

Schizachyrium scoparium

Broom brome

Bromus scoparius

Broomcorn

Sorghum bicolor

Broom cupflower

Nierembergia scoparia

Broom Fork-Moss

Dicranum scoparium

Broomleaf toadflax

Linaria genistifolia

Broomrape

Odontites vulgaris

Broom Sedge

Carex scoparia

Broom-Sedge

Andropogon virginicus

Broomwort

Scoparia montevidensis

Brown algae

Microspongium globosum

Brown algae

Dictyota flabellata

Brown algae

Colpomenia peregrina

Brown American Star-Footed Amanita

Amanita brunnescens

brown-banded cockroach

Supella longipalpa

Brown Beak-Sedge

Rhynchospora fusca

Brownbeard rice

Oryza rufipogon

Brown Beetle Grass

Diplachne fusca

Brown-Belted Bumble Bee

Bombus griseocollis

Brown Beret Lichen

Baeomyces rufus

Brown Birch

Betula pubescens

Brown Bog Sedge

Carex buxbaumii

Brown Booby

Sula leucogaster

Brown Bryozoan

Bugula neritina

Brown Centipede

Lithobius forficatus

Brown Chafer

Serica brunnea

Brown Cobblestone Lichen

Acarospora fuscata

brown cow-hair moss

Ditrichum pusillum

Brown dog tick

Rhipicephalus sanguineus

Brown dot leafy spurge flea beetle

Aphthona cyparissiae

Brown-dotted clothes moth

Niditinea fuscella

Brown Ear

Otidea cochleata