York County

Showing 51–100 of 1,545.

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  Amaranthus retroflexus L. Native AMRE

  redroot amaranth · Amaranthaceae
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  Ambrosia artemisiifolia L. Both AMAR2

  annual ragweed · Asteraceae
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  Amelanchier arborea (Michx. f.) Fernald Native AMAR3

  common serviceberry · Rosaceae
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  Amelanchier arborea (Michx. f.) Fernald var. arborea Native AMARA4

  common serviceberry · Rosaceae
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  Amelanchier bartramiana (Tausch) M. Roem. Native AMBA

  oblongfruit serviceberry · Rosaceae
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  Amelanchier canadensis (L.) Medik. Native AMCA4

  Canadian serviceberry · Rosaceae
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  Amelanchier stolonifera Wiegand Native AMST80

  running serviceberry · Rosaceae
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  Ammophila breviligulata Fernald Native AMBR

  American beachgrass · Poaceae
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  Amphicarpaea bracteata (L.) Fernald Native AMBR2

  American hogpeanut · Fabaceae
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  Anagallis arvensis L. Introduced ANAR

  scarlet pimpernel · Primulaceae
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  Anaphalis margaritacea (L.) Benth. Native ANMA

  western pearly everlasting · Asteraceae
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  Andromeda polifolia L. Native ANPO

  bog rosemary · Ericaceae
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  Andromeda polifolia L. var. glaucophylla (Link) DC. Native ANPOG

  bog rosemary · Ericaceae
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  Andropogon gerardii Vitman Native ANGE

  big bluestem · Poaceae
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  Anemone quinquefolia L. Native ANQU

  wood anemone · Ranunculaceae
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  Anemone quinquefolia L. var. quinquefolia Native ANQUQ

  nightcaps · Ranunculaceae
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  Anemone virginiana L. Native ANVI3

  tall thimbleweed · Ranunculaceae
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  Anethum graveolens L. Introduced ANGR2

  dill · Apiaceae
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  Angelica lucida L. Native ANLU

  seacoast angelica · Apiaceae
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  Antennaria howellii Greene Native ANHO

  Howell's pussytoes · Asteraceae
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  Antennaria howellii Greene ssp. canadensis (Greene) Bayer Native ANHOC

  Canadian pussytoes · Asteraceae
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  Antennaria howellii Greene ssp. neodioica (Greene) Bayer Native ANHON

  Howell's pussytoes · Asteraceae
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  Antennaria parlinii Fernald Native ANPA9

  Parlin's pussytoes · Asteraceae
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  Antennaria parlinii Fernald ssp. fallax (Greene) Bayer & Stebbins Native ANPAF

  Parlin's pussytoes · Asteraceae
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  Antennaria parlinii Fernald ssp. parlinii Native ANPAP

  Parlin's pussytoes · Asteraceae
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  Antennaria plantaginifolia (L.) Richardson Native ANPL

  woman's tobacco · Asteraceae
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  Anthemis cotula L. Introduced ANCO2

  stinking chamomile · Asteraceae
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  Anthemis tinctoria L. Introduced ANTI

  golden chamomile · Asteraceae
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  Anthoxanthum odoratum L. Introduced ANOD

  sweet vernalgrass · Poaceae
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  Anthoxanthum odoratum L. ssp. odoratum Introduced ANODO2

  sweet vernalgrass · Poaceae
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  Apera spica-venti (L.) P. Beauv. Introduced APSP

  loose silkybent · Poaceae
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  Apios americana Medik. Native APAM

  groundnut · Fabaceae
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  Apocynum androsaemifolium L. Native APAN2

  spreading dogbane · Apocynaceae
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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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  Arabis glabra (L.) Bernh. Native ARGL

  tower rockcress · Brassicaceae
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  Arabis missouriensis Greene Native ARMI5

  green rockcress · Brassicaceae
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  Aralia hispida Vent. Native ARHI2

  bristly sarsaparilla · Araliaceae
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  Aralia nudicaulis L. Native ARNU2

  wild sarsaparilla · Araliaceae
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  Aralia racemosa L. Native ARRA

  American spikenard · Araliaceae
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  Aralia racemosa L. ssp. racemosa Native ARRAR

  American spikenard · Araliaceae
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  Arceuthobium pusillum Peck Native ARPU3

  eastern dwarf mistletoe · Viscaceae
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  Arctium minus Bernh. Introduced ARMI2

  lesser burdock · Asteraceae
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  Arctostaphylos uva-ursi (L.) Spreng. Native ARUV

  kinnikinnick · Ericaceae
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  Arenaria serpyllifolia L. Introduced ARSE2

  thymeleaf sandwort · Caryophyllaceae
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  Arethusa bulbosa L. Native ARBU

  dragon's mouth · Orchidaceae
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  Argentina anserina (L.) Rydb. Native ARAN7

  silverweed cinquefoil · Rosaceae
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  Arisaema triphyllum (L.) Schott Native ARTR

  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. dichotoma Native ARDID

  churchmouse threeawn · Poaceae