The following is a collective list of Allergenic plants with supporting information.

Plant Name  
Abelmoschus esculentus (Okra) More Info
Abies concolor (White fir) More Info
Abies procera (Noble fir) More Info
Acacia baileyana (Golden acacia, Cootamundra wattle) More Info
Acacia dealbata (Mimosa, Silver wattle) More Info
Acacia farnesiana (Sweet acacia, Mealy wattle) More Info
Acacia longifolia (Acacia, Sydney golden wattle) More Info
Acalypha spp (Chenille plant, Three-seeded Mercury) More Info
Acer macrophyllum (Big leaf maple) More Info
Acer negundo (Box elder, Ash leaf maple) More Info
Acer platanoides (Norway maple) More Info
Acer rubrum (Red maple) More Info
Acer saccharinum (Silver maple) More Info
Acer saccharum (Sugar maple) More Info
Aconitum napellus (Monk's hood) More Info
Actaea alba (Baneberry, Doll's-eyes, Necklace weed) More Info
Aesculus flava (Yellow buckeye) More Info
Aesculus hippocastanum (Horse chestnut) More Info
Agave americana (Century plant, Sisal) More Info
Aglaonema (Chinese evergreen) More Info
Agropyron More Info
Agropyron cristatum (Crested wheatgrass) More Info
Agropyron desertorum (Clustered wheatgrass) More Info
Agrostis More Info
Agrostis capillaris (Colonial bentgrass) More Info
Agrostis gigantea (Black bentgrass) More Info
Agrostis stolonifera (Redtop, creeping bentgrass) More Info
Ailanthus altissima (Tree-of-heaven) More Info
Albizia julibrissin (Mimosa, Silk tree ) More Info
Albizia lebbek (Woman's tongue) More Info
Alcea rosea (Hollyhock) More Info
Aleurites moluccana moluccana (Candlenut) More Info
Allamanda cathartica (Yellow allamanda) More Info
Allamanda schottii (Purple allamanda) More Info
Allenrolfea occidentalis (Iodine bush, burrobush) More Info
Allium (Onion, garlic, leek, shallot) More Info
Alnus glutinosa (European alder) More Info
Alnus incana (Speckled alder) More Info
Alnus rhombifolia (White alder) More Info
Alnus rubra (Red alder) More Info
Alnus serrulata (Brookside alder, Hazel alder) More Info
Alnus viridis (Sitka or Mountain alder) More Info
Alocasia macrorrhiza (Giant elephant ear, taro) More Info
Alocasia odora (Giant elephant ear, taro) More Info
Aloe arborescens (Tree aloe) More Info
Alopecurus pratensis (Field meadow foxtail) More Info
Alstroemeria ligtu (Inca lily, Parrot flower) More Info
Amaranthus (Pigweeds, tumbleweeds, waterhemp) More Info
Amaranthus albus (Tumbleweed) More Info
Amaranthus blitoides (Mat amaranth) More Info
Amaranthus hybridus (Careless weed, Smooth amaranth) More Info
Amaranthus palmeri (Palmer's amaranth) More Info
Amaranthus retroflexus (Pigweed, Redroot/Rough amaranth) More Info
Amaranthus rudis (Tall amaranth, western waterhemp) More Info
Amaranthus spinosus (Pigweed, Spiny amaranth) More Info
Amaranthus tuberculatus (Western waterhemp, Rough fruit amaranth) More Info
Amaranthus viridis (Slender amaranth) More Info
Ambrosia acanthicarpa (Flat-spine burr ragweed, false ragweed) More Info
Ambrosia ambrosioides (Ambrosia leaf, Burr ragweed, Canyon ragweed) More Info
Ambrosia artemisiifolia (Annual ragweed,common ragweed, short ragweed) More Info
Ambrosia bidentata (Lance-leaf ragweed, Southern ragweed) More Info
Ambrosia chamissonis (Silver burr ragweed) More Info
Ambrosia confertiflora (Weak leaf, Burr ragweed, Slender ragweed) More Info
Ambrosia deltoidea (Triangle burr ragweed, Rabbit bush) More Info
Ambrosia dumosa (Desert ragweed, White burrobush) More Info
Ambrosia hispida (Coastal ragweed) More Info
Ambrosia psilostachya (Perennial ragweed, Western ragweed ) More Info
Ambrosia tomentosa (Bursage, Skeleton leaf burr ragweed) More Info
Ambrosia trifida (Giant ragweed) More Info
Amorphophallus (Voodoo lilies, snake lilies) More Info
Ampelopsis arborea (Pepper vine) More Info
Amphiachyris dracunculoides (Broomweed) More Info
Anacardium occidentale (Cashew) More Info
Anagallis arvensis (Scarlet pimpernel) More Info
Ananas comosus (Pineapple) More Info
Andropogon virginicus (Virginia beardgrass, Broom sedge) More Info
Anemone caroliniana (Pasque-flower, Wind flower) More Info
Anethum graveolens (Dill) More Info
Angadenia berteroi (Pineland allamanda) More Info
Angelica (Angelica) More Info
Annona reticulata (Custard apple) More Info
Anthemis arvensis (Stinking chamomile, dog fennel) More Info
Anthemis cotula (Dog fennel, Stinking chamomile) More Info
Anthoxanthum odoratum (Large sweet vernalgrass) More Info
Anthurium (Flamingo flower, anthurium) More Info
Apium graveolens (Celery) More Info
Aralia spinosa (Devil's walking stick, Prickly ash, Hercules' club) More Info
Arenga (Sugar palms) More Info
Argemone mexicana (Mexican poppy) More Info
Arisaema dracontium (Green dragon) More Info
Arisaema triphyllum (Jack-in-the-pulpit) More Info
Arrhenatherum elatius (Tall oatgrass) More Info
Artemisia More Info
Artemisia absinthium (Wormwood (absinthe), Oldman) More Info
Artemisia annua (Annual wormwood) More Info
Artemisia californica (Coastal sagebrush) More Info
Artemisia campestris (Sagewort, wormwood) More Info
Artemisia dracunculus (Green sage, Dragon wormwood, ) More Info
Artemisia frigida (Pasture sage, Prairie sagebrush) More Info
Artemisia ludoviciana (White sage) More Info

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