Canada

Ajuga

Ajuga reptans

Endangered

Alder

Alnus glutinosa

Alexanders

Angelica atropurpurea

Allegheny Serviceberry

Amelanchier arborea

alpine lady's-mantle

Alchemilla alpina

All Species in Canada

northern wood rush

Luzula confusa

Northern Yellow-Eyed Grass

Xyris montana

Northern Yellow Sac Spider

Cheiracanthium mildei

northwestern moonwort

Botrychium pinnatum

northwestern sticky aster

Canadanthus modestus

Norway Maple

Acer platanoides

Norwegian arctic-cudweed

Omalotheca norvegica

Norwegian Cinquefoil

Potentilla norvegica

Notched Firefly

Pyractomena sinuata

Data Deficient

Nuttall'S Alkali Grass

Puccinellia nuttalliana

Nuttall'S Bush-Clover

Lespedeza nuttallii

Extinct

Nuttall's pussytoes

Antennaria parvifolia

Nuttall's quillwort

Isoetes nuttallii

Nuttall's waterweed

Elodea nuttallii

Oak

Quercus palustris

Oakes' evening-primrose

Oenothera oakesiana

Oakes' Pondweed

Potamogeton oakesianus

Oblongleaf orache

Atriplex oblongifolia

Obscure Groundling

Bryotropha similis

Ocillate rove beetle

Omalium rivulare

Octagonal-tail worm

Dendrobaena octaedra

Odd beetle

Thylodrias contractus

Ogden'S Pondweed

Potamogeton ogdenii

Vulnerable

Ohio goldenrod

Solidago ohioensis

Ojibway waterwort

Elatine ojibwayensis

O'Kennon's hawthorn

Crataegus okennonii

old house borer

Hylotrupes bajulus

Vulnerable

Old-man-in-the-spring

Senecio vulgaris

One-Flowered Broomrape

Aphyllon uniflorum

one-flowered cinquefoil

Potentilla uniflora

One-Flower Pyrola

Moneses uniflora

One-Glumed Spike-Rush

Eleocharis uniglumis

One-Leaved Orchis

Galearis rotundifolia

One-Sided Orthilia

Orthilia secunda

Ontario goatsbeard

Tragopogon mirabilis

Orange-Headed Monopis

Monopis spilotella

Orange lily

Lilium bulbiferum

Extinct

orbicular whitetop

Lepidium chalepense

Oregano

Origanum vulgare

Oregon Ash

Fraxinus latifolia

Oregon Crab Apple

Malus fusca

Oregon grape

Mahonia aquifolium

Oriental false wheatgrass

Eremopyrum orientale

Oriental leopard's-bane

Doronicum orientale

Oriental poppy

Papaver orientale

Oriental prawn

Palaemon macrodactylus

Oriental virginsbower

Clematis orientalis

Ornamental Orbweaver

Larinioides patagiatus

Orpin D'Espagne

Sedum hispanicum

Orpin Sarmenteux

Sedum sarmentosum

Osage-orange

Maclura pomifera

Osier

Salix viminalis

Osoberry

Oemleria cerasiformis

Ottawa Barberry

Berberis ottawensis

Ottertail Pass saxifrage

Micranthes tenuis

Ottoe Skipper

Hesperia ottoe

Endangered

oval-headed sedge

Carex microptera

oval purse

Hornungia procumbens

Oval Spike-Rush

Eleocharis ovata

Ovate Harp Ground Beetle

Amara ovata