United States

Bur-daisy

Calotis cuneifolia

Burdock Neb

Metzneria lappella

Bur Marigold

Bidens laevis

Burmese fishtail palm

Caryota mitis

Burning Bush

Euonymus alatus

brown slug

Deroceras laeve

Brown-Toed Forest Fly

Xylota segnis

Browntop millet

Urochloa ramosa

Brown Widow

Latrodectus geometricus

Brussels riverbank ground beetle

Bembidion bruxellense

Bryobacter aggregatus

Bryoria capillaris

Bryoria implexa

Bryozoan

Watersipora subtorquata

Buck Brush

Symphoricarpos orbiculatus

Buckhorn plantain

Plantago coronopus

Buddha's hand

Alocasia cucullata

Bud Moth

Spilonota ocellana

Buellia griseovirens

Buffalo Currant

Ribes aureum

Buffalo Spinach

Enydra fluctuans

Buffelgrass

Cenchrus ciliaris

Buff-Tipped Marble

Hedya ochroleucana

Bugleweed

Lycopus europaeus

Bugleweed

Lycopus uniflorus

Bugleweed

Lycopus virginicus

Bulb and potato aphid

Rhopalosiphoninus latysiphon

Bulbil bugle-lily

Watsonia meriana

bulb nematode

Ditylenchus dipsaci

Bulbous airplant

Tillandsia bulbosa

Bulbous Bitter-Cress

Cardamine bulbosa

Cabbage Moth

Plutella xylostella

Cabbage tree

Cordyline australis

cacticans mealybug

Rhizoecus cacticans

Cactus Lichen

Agonimia opuntiella

cactus scale

Diaspis echinocacti

Cactus spurge

Euphorbia ingens

cadelle beetle

Tenebroides mauritanicus

Cajeput tree

Melaleuca linariifolia

Calendula fly

Napomyza lateralis

Calico-Bush

Kalmia latifolia

Californian Burr

Xanthium orientale

California pear sawfly

Pristiphora abbreviata

Cape-ivy

Delairea odorata

Capillary Beakrush

Rhynchospora capillacea

capillary thread moss

Meesia uliginosa

Capitate Truffleclub

Tolypocladium capitatum

Capped Orb Mussel

Musculium lacustre

capybara

Hydrochoerus hydrochaeris

Caracas rattlebox

Crotalaria micans

caragana aphid

Acyrthosiphon caraganae

Cardinal Flower

Lobelia cardinalis

Caribbean Thoroughwort

Chromolaena corymbosa

Caricature-plant

Graptophyllum pictum

Canada Serviceberry

Amelanchier canadensis

Canada spikesedge

Eleocharis geniculata

Canada St. John'S Wort

Hypericum canadense

Canada Thistle Bud Weevil

Larinus carlinae

Canada Tick-Clover

Desmodium canadense

Canadian Arrowhead

Sagittaria rigida