Index / States / Illinois / Williamson
§1County listing — Illinois
Williamson County
Illinois
- FIPS
- 17199
- Taxa recorded
- 1,210
- State
- Illinois
Filter
Showing 1–50 of 1,210.
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Abutilon theophrasti Medik. Introduced ABTHvelvetleaf · Malvaceae -
Acalypha gracilens A. Gray Native ACGR2slender threeseed mercury · Euphorbiaceae -
Acalypha monococca (Engelm. ex A. Gray) Lill. W. Mill. & Gandhi Native ACMO4slender threeseed mercury · Euphorbiaceae -
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
- Acer rubrum L. var. trilobum Torr. & A. Gray ex K. Koch Native ACRUTred 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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Acorus americanus (Raf.) Raf. Native ACAMsweetflag · Acoraceae -
Acorus calamus L. Introduced ACCA4calamus · Acoraceae -
Acroptilon repens (L.) DC. Introduced ACRE3hardheads · Asteraceae -
Actaea pachypoda Elliott Native ACPAwhite baneberry · Ranunculaceae -
Adiantum pedatum L. Native ADPEnorthern maidenhair · Pteridaceae -
Agalinis fasciculata (Elliott) Raf. Native AGFA2beach false foxglove · Scrophulariaceae -
Agalinis gattingeri (Small) Small Native AGGAroundstem false foxglove · Scrophulariaceae - Agalinis paupercula (A. Gray) Britton Native AGPA12smallflower false foxglove · Scrophulariaceae
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Agalinis purpurea (L.) Pennell Native AGPU5purple 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 pubescens Wallr. Native AGPUsoft agrimony · Rosaceae -
Agrimonia rostellata Wallr. Native AGRO3beaked agrimony · Rosaceae -
Agrostemma githago L. Introduced AGGIcommon corncockle · Caryophyllaceae -
Agrostis gigantea Roth Introduced AGGI2redtop · Poaceae -
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. Native AGHYwinter bentgrass · Poaceae -
Agrostis perennans (Walter) Tuck. Native AGPEupland 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 sativum L. Introduced ALSA2cultivated 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 blitoides S. Watson Introduced AMBLmat amaranth · Amaranthaceae -
Amaranthus hybridus L. Native AMHYslim amaranth · Amaranthaceae -
Amaranthus retroflexus L. Native AMREredroot amaranth · Amaranthaceae -
Amaranthus spinosus L. Native AMSPspiny amaranth · Amaranthaceae -
Ambrosia artemisiifolia L. Both AMAR2annual ragweed · Asteraceae -
Ambrosia bidentata Michx. Native AMBI2lanceleaf ragweed · Asteraceae -
Ambrosia psilostachya DC. Native AMPSCuman ragweed · Asteraceae