Index / States / Illinois / Washington
§1County listing — Illinois
Washington County
Illinois
- FIPS
- 17189
- Taxa recorded
- 844
- State
- Illinois
Filter
Showing 1–50 of 844.
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Abutilon theophrasti Medik. Introduced ABTHvelvetleaf · Malvaceae -
Acalypha rhomboidea Raf. Native ACRHcommon threeseed mercury · Euphorbiaceae - Acalypha virginica L. Native ACVIVirginia threeseed mercury · Euphorbiaceae
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Acer negundo L. Native ACNE2boxelder · Aceraceae -
Acer rubrum L. Native ACRUred maple · Aceraceae - Acer rubrum L. var. rubrum Native ACRURred maple · Aceraceae
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Acer saccharinum L. Native ACSA2silver maple · Aceraceae -
Acer saccharum Marshall Native ACSA3sugar maple · Aceraceae - Acer saccharum Marshall var. saccharum Native ACSASsugar maple · Aceraceae
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Achillea millefolium L. Both ACMI2common yarrow · Asteraceae - Achillea millefolium L. var. millefolium Introduced ACMIM2common yarrow · Asteraceae
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Adiantum pedatum L. Native ADPEnorthern maidenhair · Pteridaceae -
Aesculus glabra Willd. Native AEGLOhio buckeye · Hippocastanaceae - Aesculus glabra Willd. var. glabra Native AEGLGOhio buckeye · Hippocastanaceae
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Agalinis auriculata (Michx.) S.F. Blake Native AGAU3earleaf false foxglove · Scrophulariaceae -
Agalinis tenuifolia (Vahl) Raf. Native AGTE3slenderleaf false foxglove · Scrophulariaceae - Agalinis tenuifolia (Vahl) Raf. var. tenuifolia Native AGTETslenderleaf false foxglove · Scrophulariaceae
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Ageratina altissima (L.) R.M. King & H. Rob. Native AGAL5white snakeroot · Asteraceae - Ageratina altissima (L.) R.M. King & H. Rob. var. altissima Native AGALAwhite snakeroot · Asteraceae
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Agrimonia parviflora Aiton Native AGPA6harvestlice · Rosaceae -
Agrimonia rostellata Wallr. Native AGRO3beaked agrimony · Rosaceae -
Agrostemma githago L. Introduced AGGIcommon corncockle · Caryophyllaceae -
Agrostis gigantea Roth Introduced AGGI2redtop · Poaceae -
Agrostis perennans (Walter) Tuck. Native AGPEupland bentgrass · Poaceae -
Agrostis scabra Willd. Native AGSC5rough bentgrass · Poaceae -
Ailanthus altissima (Mill.) Swingle Introduced AIALtree of heaven · Simaroubaceae -
Albizia julibrissin Durazz. Introduced ALJUsilktree · Fabaceae -
Alisma subcordatum Raf. Native ALSUAmerican water plantain · Alismataceae -
Allium canadense L. Native ALCA3meadow garlic · Liliaceae -
Allium vineale L. Introduced ALVIwild garlic · Liliaceae - Allium vineale L. ssp. vineale Introduced ALVIVwild garlic · Liliaceae
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Alopecurus carolinianus Walter Native ALCA4Carolina foxtail · Poaceae -
Amaranthus albus L. Introduced AMALprostrate pigweed · Amaranthaceae -
Amaranthus hybridus L. Native AMHYslim amaranth · Amaranthaceae -
Amaranthus spinosus L. Native AMSPspiny amaranth · Amaranthaceae -
Ambrosia artemisiifolia L. Both AMAR2annual ragweed · Asteraceae -
Ambrosia bidentata Michx. Native AMBI2lanceleaf ragweed · Asteraceae -
Ambrosia trifida L. Native AMTRgreat ragweed · Asteraceae -
Amelanchier arborea (Michx. f.) Fernald Native AMAR3common serviceberry · Rosaceae - Amelanchier arborea (Michx. f.) Fernald var. arborea Native AMARA4common serviceberry · Rosaceae
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Ammannia coccinea Rottb. Native AMCOvalley redstem · Lythraceae -
Amorpha fruticosa L. Native AMFRfalse indigo bush · Fabaceae -
Ampelopsis cordata Michx. Native AMCO2heartleaf peppervine · Vitaceae -
Amphicarpaea bracteata (L.) Fernald Native AMBR2American hogpeanut · Fabaceae -
Amsonia tabernaemontana Walter Native AMTA2eastern bluestar · Apocynaceae -
Andropogon gerardii Vitman Native ANGEbig bluestem · Poaceae -
Andropogon virginicus L. Native ANVI2broomsedge bluestem · Poaceae - Andropogon virginicus L. var. virginicus Native ANVIVbroomsedge bluestem · Poaceae
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Anemone virginiana L. Native ANVI3tall thimbleweed · Ranunculaceae - Anemone virginiana L. var. virginiana Native ANVIV2tall thimbleweed · Ranunculaceae