Canada

Ajuga

Ajuga reptans

Endangered

Alder

Alnus glutinosa

Alexanders

Angelica atropurpurea

Allegheny Serviceberry

Amelanchier arborea

Common Silver Hairgrass

Aira caryophyllea

Endangered

All Species in Canada

Hidden-Scale Sedge

Carex cryptolepis

Parasitoid wasp

Oomyzus scaposus

Herb Robert

Geranium robertianum

Herb Sophia

Descurainia sophia

Hercules' Club

Aralia elata

Hexagon Stonecrop

Sedum sexangulare

Pipevine Swallowtail

Battus philenor

high arctic dandelion

Taraxacum hyparcticum

Highbush Cranberry

Viburnum edule

Highclere holly

Ilex altaclerensis

Highland Rush

Oreojuncus trifidus

High mallow

Malva sylvestris

Highwater Grass

Sporobolus pumilus

Hill's Oak

Quercus ellipsoidalis

Hill'S Pondweed

Potamogeton hillii

Deodar Weevil

Pissodes nemorensis

Himalayan Elecampane

Inula racemosa

Himalayan knotweed

Koenigia polystachya

Hispid starbur

Acanthospermum hispidum

Hjelmqvist's cotoneaster

Cotoneaster hjelmqvistii

Hoary alyssum

Berteroa incana

Hoary Cinquefoil

Potentilla argentea

hoary yellowcress

Rorippa barbareifolia

hoary plantain

Plantago media

horsetail spike-rush

Eleocharis equisetoides

Extinct

hoary plantain

Plantago virginica

hoary primrose

Primula incana

Hoary Stock

Matthiola incana

Hoary Verbena

Verbena stricta

Hoary Whitlow-Grass

Draba incana

Hoary Willow

Salix candida

vanilla-scented bog orchid

Pseudorchis straminea

Hoe nightshade

Solanum physalifolium

Duckweed Weevil

Tanysphyrus lemnae

Seine Riverbank Ground Beetle

Bembidion tetracolum

Dot-dash Firefly

Photuris pennsylvanica

Vulnerable

Hollow Joe Pye Weed

Eutrochium fistulosum

Hollyberry Cotoneaster

Cotoneaster bullatus

holly fern

Polystichum lonchitis

Hollyhock

Alcea rosea

Holmes' Hawthorn

Crataegus holmesiana

Hood's sedge

Carex hoodii

Honeysuckle Moth

Ypsolopha dentella

Honeyweed

Leonurus sibiricus

horsemint giant hyssop

Agastache urticifolia

Hooker's alpine oatgrass

Helictochloa hookeri

Rock Whitlowgrass

Draba norvegica

Horehound

Marrubium vulgare

horn-bearing dandelion

Taraxacum ceratophorum

Horn-Leaved Riverweed

Podostemum ceratophyllum

Dwarf riverbank ground beetle

Elaphropus parvulus

Early Birch Leaf Edgeminer

Fenusella nana

Horned Pondweed

Zannichellia palustris

Vulnerable

Dusted Skipper

Atrytonopsis hianna

Horned Poppy

Glaucium flavum

Horsetail

Equisetum laevigatum

Horseradish

Armoracia rusticana

Houghton'S Cyperus

Cyperus houghtonii

Houghton's goldenrod

Solidago houghtonii

Australian spider beetle

Ptinus tectus