York County

Showing 1–50 of 171.

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  Allium drummondii Regel Native ALDR

  Drummond's onion · Liliaceae
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  Amaranthus arenicola I.M. Johnst. Native AMAR

  sandhill amaranth · Amaranthaceae
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  Amaranthus retroflexus L. Native AMRE

  redroot amaranth · Amaranthaceae
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  Amaranthus tuberculatus (Moq.) Sauer Native AMTU

  roughfruit amaranth · Amaranthaceae
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  Ambrosia artemisiifolia L. Both AMAR2

  annual ragweed · Asteraceae
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  Ambrosia artemisiifolia L. var. elatior (L.) Descourtils Introduced AMARE

  annual ragweed · Asteraceae
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  Ambrosia trifida L. Native AMTR

  great ragweed · Asteraceae
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  Ambrosia trifida L. var. trifida Native AMTRT2

  great ragweed · Asteraceae
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  Androsace occidentalis Pursh Native ANOC2

  western rockjasmine · Primulaceae
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  Anemone caroliniana Walter Native ANCA9

  Carolina anemone · Ranunculaceae
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  Antennaria microphylla Rydb. Native ANMI3

  littleleaf pussytoes · Asteraceae
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  Antennaria neglecta Greene Native ANNE

  field pussytoes · Asteraceae
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  Apocynum cannabinum L. Native APCA

  Indianhemp · Apocynaceae
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  Aquilegia canadensis L. Native AQCA

  red columbine · Ranunculaceae
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  Arisaema triphyllum (L.) Schott Native ARTR

  Jack in the pulpit · Araceae
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  Arisaema triphyllum (L.) Schott ssp. triphyllum Native ARTRT3

  Jack in the pulpit · Araceae
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  Aristida dichotoma Michx. Native ARDI4

  churchmouse threeawn · Poaceae
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  Aristida dichotoma Michx. var. curtissii A. Gray Native ARDIC

  Curtis' threeawn · Poaceae
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  Astragalus crassicarpus Nutt. Native ASCR2

  groundplum milkvetch · Fabaceae
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  Astragalus crassicarpus Nutt. var. crassicarpus Native ASCRC3

  groundplum milkvetch · Fabaceae
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  Bassia scoparia (L.) A.J. Scott Introduced BASC5

  burningbush · Chenopodiaceae
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  Bidens connata Muhl. ex Willd. Native BICO5

  purplestem beggarticks · Asteraceae
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  Bidens vulgata Greene Native BIVU

  big devils beggartick · Asteraceae
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  Boltonia asteroides (L.) L'Hér. Native BOAS

  white doll's daisy · Asteraceae
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  Boltonia asteroides (L.) L'Hér. var. recognita (Fernald & Grisc.) Cronquist Native BOASR

  white doll's daisy · Asteraceae
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  Bouteloua curtipendula (Michx.) Torr. Native BOCU

  sideoats grama · Poaceae
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  Bouteloua curtipendula (Michx.) Torr. var. curtipendula Native BOCUC2

  sideoats grama · Poaceae
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  Brickellia eupatorioides (L.) Shinners Native BREU

  false boneset · Asteraceae
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  Brickellia eupatorioides (L.) Shinners var. corymbulosa (Torr. & A. Gray) Shinners Native BREUC

  false boneset · Asteraceae
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  Callirhoe alcaeoides (Michx.) A. Gray Native CAAL

  light poppymallow · Malvaceae
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  Capsella bursa-pastoris (L.) Medik. Introduced CABU2

  shepherd's purse · Brassicaceae
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  Cardaria draba (L.) Desv. Introduced CADR

  whitetop · Brassicaceae
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  Carduus acanthoides L. Introduced CAAC

  spiny plumeless thistle · Asteraceae
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  Carduus nutans L. Introduced CANU4

  nodding plumeless thistle · Asteraceae
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  Carex duriuscula C.A. Mey. Native CADU6

  needleleaf sedge · Cyperaceae
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  Carex inops L.H. Bailey Native CAIN9

  long-stolon sedge · Cyperaceae
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  Carex inops L.H. Bailey ssp. heliophila (Mack.) Crins Native CAINH2

  sun sedge · Cyperaceae
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  Celastrus scandens L. Native CESC

  American bittersweet · Celastraceae
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  Cercis canadensis L. Native CECA4

  eastern redbud · Fabaceae
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  Cercis canadensis L. var. canadensis Native CECAC

  eastern redbud · Fabaceae
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  Chamaecrista fasciculata (Michx.) Greene Native CHFA2

  partridge pea · Fabaceae
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  Chamaecrista fasciculata (Michx.) Greene var. fasciculata Native CHFAF

  partridge pea · Fabaceae
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  Chenopodium simplex (Torr.) Raf. Native CHSI2

  mapleleaf goosefoot · Chenopodiaceae
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  Cirsium altissimum (L.) Hill Native CIAL2

  tall thistle · Asteraceae
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  Convolvulus arvensis L. Introduced COAR4

  field bindweed · Convolvulaceae
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  Conyza canadensis (L.) Cronquist Native COCA5

  Canadian horseweed · Asteraceae
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  Conyza canadensis (L.) Cronquist var. canadensis Native COCAC3

  Canadian horseweed · Asteraceae
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  Coreopsis tinctoria Nutt. Native COTI3

  golden tickseed · Asteraceae
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  Coreopsis tinctoria Nutt. var. tinctoria Native COTIT

  golden tickseed · Asteraceae
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  Cornus drummondii C.A. Mey. Native CODR

  roughleaf dogwood · Cornaceae