United States

Agrimony

Agrimonia eupatoria

Ajuga

Ajuga reptans

Endangered

Alder

Alnus glutinosa

Alder leaf beetle

Agelastica alni

Alder Spittlebug

Aphrophora alni

All Species in United States

Hornhand Sedgesitter

Pyrophaena granditarsa

Horn-Leaved Riverweed

Podostemum ceratophyllum

Horn Of Plenty

Craterellus cornucopioides

Hornschuch'S Beard-Moss

Pseudocrossidium hornschuchianum

Endangered

Horn Stalkball

Onygena equina

Hornwort

Dendroceros crispus

horse

Equus caballus

Horse botfly

Gasterophilus intestinalis

Horsebush

Peltophorum dubium

Horseflesh mahogany

Lysiloma sabicu

Horsefly's eye

Dopatrium junceum

Horse-Hair Fungus

Gymnopus androsaceus

Horse Mushroom

Agaricus arvensis

Horseradish

Armoracia rusticana

Horseradish flea beetle

Phyllotreta armoraciae

Horseradish tree

Moringa oleifera

Horseshoe geranium

Pelargonium zonale

Horseshoe vetch

Hippocrepis comosa

Horse sucking louse

Haematopinus asini

Horsetail

Equisetum laevigatum

Horsetail Weevil

Grypus equiseti

Hottentot fig

Carpobrotus edulis

Houghton'S Cyperus

Cyperus houghtonii

Houghton'S Sedge

Carex houghtoniana

Hound's tongue root weevil

Mogulones crucifer

Extinct

House Centipede

Scutigera coleoptrata

House cricket

Acheta domesticus

House False-Scorpion

Chelifer cancroides

House Finch

Haemorhous mexicanus

House fly

Neomyia cornicina

House fly

Coenosia humilis

House fly

Hydrotaea aenescens

House fly

Musca domestica

House Fly

Muscina levida

Household Fine Sheetweaver

Lepthyphantes leprosus

Household minute scavenger beetle

Adistemia watsoni

house mouse

Mus musculus

House Sparrow

Passer domesticus

House Wren

Troglodytes aedon

Hover fly

Eumerus strigatus

Data Deficient

Hover fly

Parasyrphus macularis

Hover fly

Cheilosia pagana

Hover fly

Eristalis rupium

Hover Fly

Melanostoma mellina

Hover Fly

Syritta pipiens

Huckleberry Broom Rust Fungus

Calyptospora columnaris

Hudsonian Godwit

Limosa haemastica

Hudsonian Whiteface

Leucorrhinia hudsonica

Human flea

Pulex irritans

Humble Pixie-Cup Lichen

Cladonia humilis

Vulnerable

Humpback Brittlegill

Russula caerulea

Hump-backed fly

Megaselia curtineura

Hump-backed fly

Megaselia rufipes

Hump-backed fly

Dohrniphora cornuta

Humpbacked minute scavenger beetle

Cartodere nodifer

Humulin Brown Lacewing

Hemerobius humulinus

Hungarian iris

Iris variegata

Hungarian Lilac

Syringa josikaea

Hungarian Mullein

Verbascum speciosum

Hungarian Vetch

Vicia pannonica