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

Arkansas Grape

Vitis aestivalis

Arolla Pine

Pinus cembra

Arrow Arum

Peltandra virginica

Arrow bamboo

Pseudosasa japonica

Arrow-Grass

Triglochin maritima

Arsène's mountain-ash

Sorbaronia arsenii

Artemisia

Artemisia vulgaris

athenarian burrowing anemone

Nematostella vectensis

Vulnerable

Atlantic Bay Scallop

Argopecten irradians

Atlantic Cordgrass

Sporobolus alterniflorus

Atlantic Mudwort

Limosella australis

Atlantic Ninebark

Physocarpus opulifolius

Aubretia

Aubrieta deltoidea

August Flower

Scorzoneroides autumnalis

August-Lily

Hosta plantaginea

Aunt Lucy

Ellisia nyctelea

auricled twayblade

Neottia auriculata

Arum-Leaf Arrowhead

Sagittaria cuneata

Asa Gray'S Sedge

Carex grayi

Ascending Grapefern

Botrychium ascendens

ascending saxifrage

Saxifraga adscendens

ash

Fraxinus excelsior

Vulnerable

Ashy Cinquefoil

Potentilla inclinata

ashy sunflower

Helianthus mollis

Ashy Willow

Salix cinerea

Asian Ambrosia Beetle

Xyleborinus attenuatus

Asian Bittersweet

Celastrus orbiculatus

Asian forget-me-not

Myosotis asiatica

Asian Longhorned Beetle

Anoplophora glabripennis

Asian oak fern

Gymnocarpium continentale

Asian wavy bittercress

Cardamine occulta

Asiatic Dayflower

Commelina communis

Asiatic tearthumb

Persicaria perfoliata

Asian drill snail

Ocinebrellus inornatus

Asian Fly-Honeysuckle

Lonicera morrowii

Asian kelp

Undaria pinnatifida

Asian Lady Beetle

Harmonia axyridis

Asian Shore Crab

Hemigrapsus sanguineus

Asian Spring Bulb

Scilla forbesii

Asian Tiger Mosquito

Aedes albopictus

Asparagus

Asparagus officinalis

Asparagus Beetle

Crioceris asparagi

aspen daisy

Erigeron speciosus

Aspen Leaf Blotch Miner

Phyllonorycter apparella

Athabasca willow

Salix athabascensis

Belgian Endive

Cichorium intybus

Bell-Bean

Vicia faba

Bending Bittercress

Cardamine flexuosa

Bending Wayfaring Tree

Viburnum lantana

Bengal Gram

Cicer arietinum

Bergamot Mint

Mentha aquatica

Bering mouse-ear chickweed

Cerastium beeringianum

Bermudagrass

Cynodon dactylon

Bermuda Thistle

Argemone mexicana

Berry Fern

Cystopteris bulbifera

Bethlehem Lungwort

Pulmonaria saccharata

Beth Root

Trillium erectum

Betony

Pedicularis canadensis

bigpod sesbania

Sesbania herbacea

Big quakinggrass

Briza maxima