United States

Hairy Shadow Lichen

Phaeophyscia hirsuta

hooked scorpion moss

Scorpidium scorpioides

hop aphid

Phorodon humuli

American Wormseed

Dysphania ambrosioides

Hoof Fungus

Fomes fomentarius

hook-leaved fern moss

Thuidium recognitum

Hook-Lobed Dandelion

Taraxacum hamatum

Horehound

Marrubium vulgare

Horn Calcareous Moss

Mnium hornum

Horn-Leaved Riverweed

Podostemum ceratophyllum

Dwarf riverbank ground beetle

Elaphropus parvulus

Early Birch Leaf Edgeminer

Fenusella nana

Earthworm

Satchellius mammalis

alpine leafy moss

Plagiomnium medium

Horned Pondweed

Zannichellia palustris

Dusted Skipper

Atrytonopsis hianna

Eastern Elliptio

Elliptio complanata

Horned Poppy

Glaucium flavum

Hornemann'S Willowherb

Epilobium hornemannii

hornet moth

Sesia apiformis

Horn Of Plenty

Craterellus cornucopioides

Hornschuch'S Beard-Moss

Pseudocrossidium hornschuchianum

Horsetail

Equisetum laevigatum

Horseradish

Armoracia rusticana

Horseradish tree

Moringa oleifera

Horseshoe geranium

Pelargonium zonale

Horseshoe vetch

Hippocrepis comosa

House cricket

Acheta domesticus

Hottentot fig

Carpobrotus edulis

Houghton'S Cyperus

Cyperus houghtonii

Houghton'S Sedge

Carex houghtoniana

House Centipede

Scutigera coleoptrata

Eastern Cauliflower Mushroom

Sparassis spathulata

House False-Scorpion

Chelifer cancroides

Alaska Clubmoss

Diphasiastrum sitchense

House fly

Musca domestica

Household Fine Sheetweaver

Lepthyphantes leprosus

Kahili flower

Grevillea banksii

False aralia

Plerandra elegantissima

Hover Fly

Syritta pipiens

Powdery Twig Lichen

Ramalina pollinaria

Human flea

Pulex irritans

Humpback Brittlegill

Russula caerulea

Small Phoenix

Ecliptopera silaceata

Prickly moses

Acacia verticillata

Hungarian iris

Iris variegata

Hungarian Mullein

Verbascum speciosum

Hungarian Vetch

Vicia pannonica

Huron Serviceberry

Amelanchier sanguinea

Husk-Tomato

Physalis philadelphica

Hutchin'S Pincushion

Ulota hutchinsiae

Ichneumonid wasp

Exenterus abruptorius

Hyacinthbean

Lablab purpureus

Hyacinthoides

Hyacinthoides massartiana

Aeromonas hydrophila

Elatior hybrid primroses

Primula polyantha

Illinois Pondweed

Potamogeton illinoensis

Paris Riverbank Ground Beetle

Bembidion obtusum

Illyrian cottonthistle

Onopordum illyricum

Acinetobacter baumannii