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

Northern dusky salamander

Desmognathus fuscus

Northern eyebright

Euphrasia micrantha

Northern Firefly

Pyractomena borealis

northern flying squirrel

Glaucomys sabrinus

northern fowl mite

Ornithonyssus sylviarum

Northern Frog-Biting Mosquito

Culex territans

Northern Fulmar

Fulmarus glacialis

Endangered

Northern Gannet

Morus bassanus

northern green orchid

Platanthera aquilonis

Northern Grey Shrike

Lanius borealis

Northern Hawk-Owl

Surnia ulula

Northern Hound'S-Tongue

Andersonglossum boreale

Northern Lamprey

Ichthyomyzon unicuspis

Northern Leopard Frog

Lithobates pipiens

Northern Mockingbird

Mimus polyglottos

Northern Naiad

Najas gracillima

Northern Navel

Omphaliaster borealis

Northern needleleaf

Tillandsia balbisiana

Northern Panicgrass

Dichanthelium boreale

Northern Pintail

Anas acuta

Northern Pygmy Clubtail

Lanthus parvulus

Northern rat flea

Nosopsyllus fasciatus

Northern Red Belt

Fomitopsis mounceae

Northern Red Oak

Quercus rubra

Northern Reedgrass

Calamagrostis inexpansa

northern river crangonyctid

Crangonyx pseudogracilis

Northern root knot nematode

Meloidogyne hapla

Northern Rough-winged Swallow

Stelgidopteryx serripennis

Northern Saw-whet Owl

Aegolius acadicus

Northern Shorthusk

Brachyelytrum aristosum

Northern Shoveler

Spatula clypeata

Near Threatened

Northern Snail-Seed Pondweed

Potamogeton spirillus

Northern Spreadwing

Lestes disjunctus

Northern Tooth

Climacodon septentrionalis

Northern Tree-Clubmoss

Dendrolycopodium dendroideum

northern tree moss

Climacium dendroides

Northern Two-Lined Salamander

Eurycea bislineata

Northern Water Plantain

Alisma triviale

Northern Wheatear

Oenanthe oenanthe

Critically Endangered

Northern Wild Raisin

Viburnum cassinoides

Northern Wild Rice

Zizania palustris

Northern Woodland Violet

Viola septentrionalis

Northern Yellow-Eyed Grass

Xyris montana

Northern Yellow Sac Spider

Cheiracanthium mildei

Norway Maple

Acer platanoides

Norway maple aphid

Periphyllus lyropictus

Norwegian Cinquefoil

Potentilla norvegica

Nose botfly

Gasterophilus haemorrhoidalis

Notched Firefly

Pyractomena sinuata

Data Deficient

Notched Rustwort

Marsupella emarginata

Extinct

Nut Disco

Hymenoscyphus fructigenus

Nutgrass

Cyperus stoloniferus

Nutgrass

Cyperus rotundus

Nut Moss

Diphyscium foliosum

Extinct

nutria

Myocastor coypus

nut scale

Eulecanium tiliae

Nuttall'S Alkali Grass

Puccinellia nuttalliana

Nuttall'S Bush-Clover

Lespedeza nuttallii

Extinct

Nuttall's waterweed

Elodea nuttallii

Nut-Tree Pigmy

Stigmella microtheriella