Armstrong County

Showing 1–50 of 346.

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  Abronia fragrans Nutt. ex Hook. Native ABFR2

  snowball sand verbena · Nyctaginaceae
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  Adiantum capillus-veneris L. Native ADCA

  common maidenhair · Pteridaceae
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  Allionia incarnata L. Native ALIN

  trailing windmills · Nyctaginaceae
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  Allionia incarnata L. var. incarnata Native ALINI

  trailing windmills · Nyctaginaceae
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  Amaranthus albus L. Introduced AMAL

  prostrate pigweed · Amaranthaceae
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  Amaranthus arenicola I.M. Johnst. Native AMAR

  sandhill amaranth · Amaranthaceae
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  Ambrosia grayi (A. Nelson) Shinners Native AMGR5

  woollyleaf bur ragweed · Asteraceae
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  Ambrosia psilostachya DC. Native AMPS

  Cuman ragweed · Asteraceae
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  Ammoselinum popei Torr. & A. Gray Native AMPO4

  plains sandparsley · Apiaceae
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  Amorpha canescens Pursh Native AMCA6

  leadplant · Fabaceae
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  Amphiachyris dracunculoides (DC.) Nutt. Native AMDR

  prairie broomweed · Asteraceae
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  Andropogon gerardii Vitman Native ANGE

  big bluestem · Poaceae
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  Aphanostephus skirrhobasis (DC.) Trel. Native APSK

  Arkansas dozedaisy · Asteraceae
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  Apocynum cannabinum L. Native APCA

  Indianhemp · Apocynaceae
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  Argythamnia mercurialina (Nutt.) Müll. Arg. Native ARME5

  tall silverbush · Euphorbiaceae
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  Argythamnia mercurialina (Nutt.) Müll. Arg. var. mercurialina Native ARMEM

  tall silverbush · Euphorbiaceae
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  Aristida adscensionis L. Native ARAD

  sixweeks threeawn · Poaceae
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  Aristida purpurea Nutt. Native ARPU9

  purple threeawn · Poaceae
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  Aristida purpurea Nutt. var. nealleyi (Vasey) Allred Native ARPUN

  blue threeawn · Poaceae
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  Artemisia filifolia Torr. Native ARFI2

  sand sagebrush · Asteraceae
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  Artemisia ludoviciana Nutt. Both ARLU

  white sagebrush · Asteraceae
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  Artemisia ludoviciana Nutt. ssp. ludoviciana Native ARLUL2

  white sagebrush · Asteraceae
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  Asclepias pumila (A. Gray) Vail Native ASPU

  plains milkweed · Asclepiadaceae
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  Asclepias tuberosa L. Native ASTU

  butterfly milkweed · Asclepiadaceae
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  Asclepias tuberosa L. ssp. interior Woodson Native ASTUI

  butterfly milkweed · Asclepiadaceae
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  Astragalus gracilis Nutt. Native ASGR3

  slender milkvetch · Fabaceae
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  Astragalus lotiflorus Hook. Native ASLO4

  lotus milkvetch · Fabaceae
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  Astragalus missouriensis Nutt. Native ASMI10

  Missouri milkvetch · Fabaceae
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  Astragalus missouriensis Nutt. var. missouriensis Native ASMIM5

  Missouri milkvetch · Fabaceae
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  Astragalus mollissimus Torr. Native ASMO7

  woolly locoweed · Fabaceae
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  Astragalus mollissimus Torr. var. mollissimus Native ASMOM5

  woolly locoweed · Fabaceae
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  Astragalus nuttallianus DC. Native ASNU4

  smallflowered milkvetch · Fabaceae
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  Astragalus nuttallianus DC. var. austrinus (Small) Barneby Native ASNUA

  smallflowered milkvetch · Fabaceae
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  Astragalus plattensis Nutt. Native ASPL2

  Platte River milkvetch · Fabaceae
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  Astragalus racemosus Pursh Native ASRA2

  cream milkvetch · Fabaceae
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  Astragalus racemosus Pursh var. racemosus Native ASRAR2

  cream milkvetch · Fabaceae
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  Atriplex canescens (Pursh) Nutt. Native ATCA2

  fourwing saltbush · Chenopodiaceae
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  Atriplex canescens (Pursh) Nutt. var. canescens Native ATCAC

  fourwing saltbush · Chenopodiaceae
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  Baccharis salicina Torr. & A. Gray Native BASA

  willow baccharis · Asteraceae
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  Bassia scoparia (L.) A.J. Scott Introduced BASC5

  burningbush · Chenopodiaceae
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  Berlandiera betonicifolia (Hook.) Small Native BEBE4

  Texas greeneyes · Asteraceae
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  Bothriochloa laguroides (DC.) Herter Both BOLA2

  silver beardgrass · Poaceae
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  Bothriochloa laguroides (DC.) Herter ssp. torreyana (Steud.) Allred & Gould Native BOLAT

  silver beardgrass · Poaceae
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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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  Bouteloua dactyloides (Nutt.) J.T. Columbus Native BODA2

  buffalograss · Poaceae
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  Bouteloua eriopoda (Torr.) Torr. Native BOER4

  black grama · Poaceae
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  Bouteloua gracilis (Willd. ex Kunth) Lag. ex Griffiths Native BOGR2

  blue grama · Poaceae
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  Bouteloua hirsuta Lag. Native BOHI2

  hairy grama · Poaceae
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  Bouteloua hirsuta Lag. var. hirsuta Native BOHIH

  hairy grama · Poaceae