List of Canadian Plants By Genus - Ar

Ar

• Arabidopsis
  • X Arabidopsis thaliana — mouse-ear cress, wall-cress

• Arabis
  • N Arabis alpina subsp. alpina — alpine rockcress
  • X Arabis alpina subsp. caucasica — wall rockcress, grey rockcress
  • N Arabis arenicola var. arenicola — arctic rockcress
  • N Arabis arenicola var. pubescens — sand rockcress
  • N Arabis canadensis — sicklepod
  • N Arabis divaricarpa — limestone rockcress
  • N Arabis drummondii — Drummond rockcress
  • N Arabis glabra — tower-mustard
  • N Arabis hirsuta var. adpressipilis — hairy rockcress, creamflower rockcress
  • N Arabis hirsuta var. pycnocarpa — creamflower rockcress
  • N Arabis holboelli var. retrofracta — Holboell's rockcress
  • N' Arabis holboelli var. secunda — bristly-leaved rockcress
  • ? Arabis kamchatica — lyreleaf rockcress (species status disputed)
  • N Arabis laevigata — smooth rockcress
  • N Arabis lyrata — lyreleaf rockcress
  • N Arabis shortii — Short's rockcress

• Aralia
  • X Aralia elata — Japanese Angelica-tree, Chinese Angelica-tree
  • N Aralia hispida — bristly spikenard, bristly sarsaparilla, dwarf elder
  • N Aralia nudicaulis — wild sarsaparilla, small spikenard
  • N Aralia racemosa — American spikenard, Indian-root, life-of-man, petty morel
  • X Aralia spinosa — Hercules' club, Devil's walkingstick, prickly ash, Angelica tree, toothache tree

• Arceuthobium
  • N Arceuthobium americanum — pine mistletoe, American mistletoe, lodgepole pine dwarf mistletoe
  • N Arceuthobium pusillum — dwarf mistletoe, eastern dwarf mistletoe

• Arctagrostis
  • N Arctagrostis latifolia — polargrass

• Arctium
  • X Arctium lappa — great burdock
  • X Arctium minus subsp. minus — common burdock
  • X Arctium minus subsp. nemorosum — lesser burdock
  • X Arctium pubens — wood burdock
  • X Arctium tomentosum — woolly burdock, tomentose burdock
  • X Arctium × nothum (A. lappa × A. minus) — hybrid burdock

• Arctophila
  • N Arctophila fulva — pendant grass

• Arctostaphylos
  • N Arctostaphylos alpina — alpine bearberry
  • N Arctostaphylos rubra — red manzanita
  • N Arctostaphylos uva-ursi — bearberry, kinnikinnick, mealberry

• Arenaria
  • N Arenaria humifusa — creeping sandwort, low sandwort, spreading sandwort
  • X Arenaria serpyllifolia — thymeleaf sandwort

• Arethusa
  • N Arethusa bulbosa — dragon's mouth, swamp pink

• Argemone
  • X Argemone mexicana — Mexican prickly-poppy

• Arisaema
  • N Arisaema dracontium — green dragon Special Concern
  • N Arisaema triphyllum — Jack-in-the-pulpit

• Aristida
  • N Aristida basiramea — forktip threeawn Endangered
  • N Aristida dichotoma — Shinner's threeawn
  • N Aristida longespica var. geniculata — red threeawn
  • N Aristida longespica var. longespica — slimspike threeawn
  • X Aristida oligantha — prairie three-awn grass
  • N Aristida purpurascens — arrow feather threeawn

• Aristolochia
  • X Aristolochia clematitis — birthwort
  • X Aristolochia macrophylla — pipevine

• Armeria
  • N Armeria maritima — sea thrift, Labrador sea thrift, foxflower

• Armoracia
  • X Armoracia rusticana — horseradish, red cole

• Arnica
  • N Arnica angustifolia — narrowleaf arnica, arctic arnica, arctic leopardbane
  • N Arnica chamissonis — meadow arnica, Chamisso's arnica, leafy arnica, leafy leopardbane
  • N Arnica cordifolia — heartleaf arnica, heartleaf leopardbane
  • N Arnica lonchophylla — northern arnica, longleaf arnica, white-plumed arnica, spearleaf arnica

• Arnoglossum
  • N Arnoglossum platagineum — tuberous Indian-plantain Special Concern

• Aronia
  • N Aronia melanocarpa — black chokeberry

• Arrhenatherum
  • X Arrhenatherum elatius — tall oatgrass, French rye, tuber oatgrass, bulbous oatgrass, false oat grass

• Artemisia
  • X Artemisia abrotanum — southern wormwood, southernwood, lad's love, oldman
  • X Artemisia absinthium — common wormwood, absinthe, absinthe wormwood, European wormwood
  • X Artemisia annua — sweet sagewort, annual wormwood, sweet Annie, sweet wormwood, annual mugwort
  • X Artemisia biennis — biennial wormwood
  • N Artemisia campestris subsp. borealis — boreal wormwood, Canada wormwood
  • N Artemisia campestris subsp. caudata — tall wormwood, beach wormwood, wild wormwood, threadleaf sagewort, sagewort wormwood
  • N Artemisia dracunculus — wild tarragon, dragon wormwood, dragon sagewort, false tarragon, French tarragon, Russian tarragon
  • N Artemisia frigida — fringed sagebrush, prairie sagebrush, fringed sagewort, prairie sagewort, wormwood sage, pasture sage, arctic sagebrush
  • N Artemisia ludoviciana — white sage, silver wormwood, prairie sage, western mugwort, darkleaf mugwort, cudweed sagewort, pasture sage, Louisiana wormwood, Louisiana sage, silver king artemisia, white wormwood, white sagebrush
  • X Artemisia pontica — Roman wormwood, petite wormwood, green ginger
  • X Artemisia stelleriana — hoary sagebrush, dusty miller, beach wormwood, old woman
  • N Artemisia tilesii — Tilesius' wormood, mountain sagewort, oldwoman
  • X Artemisia vulgaris — common mugwort, common wormwood

• Aruncus
  • X Aruncus dioicus — common goat's-beard