Vascular Plants
Includes all flowering plants, conifers, ferns and fern-allies.
Genus names beginning with A:
108 genera
368 species
111 subspecies and varieties
368 species
111 subspecies and varieties
Show only taxa with photos
Abies – fir (4 species)
Abronia – abronia (3 species)
Abronia – sandverbena (3 species)
Abutilon – Indian mallow (1 species)
Acer – maple (8 species)
Achillea – yarrow (2 species)
Achlys – deerfoot (2 species)
Achlys – vanillaleaf (2 species)
Achnatherum – needlegrass (7 species)
Achnatherum – ricegrass (7 species)
Acmispon – deervetch (4 species)
Acmispon – lotus (4 species)
Aconitum – monkshood (1 species)
Aconogonon – fleeceflower (2 species)
Acorus – sweet flag (1 species)
Actaea – baneberry (3 species)
Actaea – bugbane (3 species)
Adelinia – Adeline (1 species)
Adenocaulon – pathfinder (1 species)
Adenocaulon – trail plant (1 species)
Adiantum – maidenhair fern (1 species)
Adonis – adonis (1 species)
Adonis – pheasant-eye (1 species)
Aegilops – goatgrass (1 species)
Aegopodium (1 species)
Aesculus – horse chestnut (1 species)
Agastache – agastache (2 species)
Agastache – giant-hyssop (2 species)
Agastache – horse-mint (2 species)
Ageratina – snakeroot (1 species)
Agoseris – false-dandelion (8 species)
Agoseris – mountain-dandelion (8 species)
Agrimonia – agrimony (1 species)
Agropogon (0 species)
Agropyron – wheatgrass (2 species)
Agrostemma – corn campion (1 species)
Agrostemma – corncockle (1 species)
Agrostis – bentgrass (13 species)
Ailanthus – tree-of-heaven (1 species)
Aira – hairgrass (2 species)
Ajuga – bugle (1 species)
Alcea – hollyhock (0 species)
Alchemilla (0 species)
Alhagi – camel-thorn (1 species)
Aliciella – aliciella (2 species)
Aliciella – gilia (2 species)
Alisma – water-plantain (3 species)
Alliaria – garlic mustard (1 species)
Allium – garlic (20 species)
Allium – onion (20 species)
Allotropa – candystick (1 species)
Allotropa – sugarstick (1 species)
Alnus – alder (5 species)
Alopecurus – foxtail (7 species)
Alopecurus – meadow-foxtail (7 species)
Alstroemeria (0 species)
Alyssum – alyssum (2 species)
Amaranthus – amaranth (8 species)
Amaranthus – pigweed (8 species)
Amauropelta (1 species)
Ambrosia – bursage (5 species)
Ambrosia – burweed (5 species)
Ambrosia – ragweed (5 species)
Amelanchier – serviceberry (2 species)
Amelanchier – shadbush (2 species)
Ammannia – ammannia (2 species)
Ammannia – redstem (2 species)
Ammannia – tooth-cup (2 species)
Ammophila – beachgrass (2 species)
Amorpha – false indigo (1 species)
Amphiscirpus – Nevada clubrush (1 species)
Amsinckia – amsinckia (6 species)
Amsinckia – fiddleneck (6 species)
Amsinckia – tarweed (6 species)
Anaphalis – pearly-everlasting (1 species)
Anchusa – alkanet (2 species)
Anchusa – anchusa (2 species)
Anchusa – bugloss (2 species)
Andromeda – bog-rosemary (1 species)
Andromeda – moorwort (1 species)
Andropogon (0 species)
Androsace – androsace (4 species)
Androsace – fairy-candelabra (4 species)
Androsace – rock-jasmine (4 species)
Anemone – anemone (9 species)
Anemone – windflower (9 species)
Anethum (1 species)
Angelica – angelica (5 species)
Anisocarpus – anisocarpus (1 species)
Antennaria – everlasting (18 species)
Antennaria – pussy-toes (18 species)
Anthemis – chamomile (2 species)
Anthemis – dogfennel (2 species)
Anthemis – mayweed (2 species)
Anthoxanthum – vernalgrass (2 species)
Anthriscus – anthriscus (2 species)
Anthriscus – chervil (2 species)
Anticlea – death camas (2 species)
Antirrhinum – snapdragon (1 species)
Apera – windgrass (1 species)
Aphanes – parsley-piert (3 species)
Aphyllon – broomrape (7 species)
Apium – celery (1 species)
Apocynum – dogbane (3 species)
Aquilegia – Columbine (4 species)
Arabidopsis – mouse-ear cress (2 species)
Arabidopsis – thale cress (2 species)
Arabis – rockcress (6 species)
Aralia – spikenard (1 species)
Arbutus – madroña (2 species)
Arbutus – madrone (2 species)
Arbutus – madroño (2 species)
Arceuthobium – dwarf mistletoe (6 species)
Arcteranthis – false-buttercup (1 species)
Arctium – burdock (2 species)
Arctium – clotbur (2 species)
Arctostaphylos – bearberry (6 species)
Arctostaphylos – manzanita (6 species)
Arenaria – sandwort (2 species)
Argemone (0 species)
Aristida – aristida (1 species)
Aristida – threeawn (1 species)
Armeria – sea-pink (2 species)
Armeria – thrift (2 species)
Armoracia – horseradish (1 species)
Arnica – arnica (14 species)
Aronia (1 species)
Arrhenatherum – oatgrass (1 species)
Artemisia – artemisia (21 species)
Artemisia – mugwort (21 species)
Artemisia – sagebrush (21 species)
Artemisia – wormwood (21 species)
Arum – lords-and-ladies (1 species)
Aruncus – goatsbeard (1 species)
Asarum – wild ginger (1 species)
Asclepias – milkweed (4 species)
Askellia – elegant hawksbeard (1 species)
Askellia – hawksbeard (1 species)
Asparagus – asparagus (1 species)
Asperugo – catchweed (1 species)
Asperugo – madwort (1 species)
Aspidotis – aspidotis (1 species)
Aspidotis – Indian's dream (1 species)
Asplenium – spleenwort (2 species)
Astragalus – locoweed (45 species)
Astragalus – milk-vetch (45 species)
Astragalus – poison-vetch (45 species)
Astragalus – rattle-pod (45 species)
Athyrium – lady-fern (2 species)
Athysanus – athysanus (1 species)
Athysanus – sandweed (1 species)
Atocion – catchfly (1 species)
Atriplex – greasewood (14 species)
Atriplex – orache (14 species)
Atriplex – saltbush (14 species)
Atriplex – shadscale (14 species)
Atriplex – silverscale (14 species)
Atropa (0 species)
Aubrieta (1 species)
Aucuba (0 species)
Avena – oats (3 species)
Azolla – mosquito-fern (2 species)
