York County

Showing 1,101–1,150 of 1,545.

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  Pseudognaphalium helleri (Britton) Anderb. Native PSHE4

  Heller's cudweed · Asteraceae
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  Pseudognaphalium helleri (Britton) Anderb. ssp. micradenium (Weath.) Kartesz Native PSHEM

  Heller's cudweed · Asteraceae
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  Pseudognaphalium macounii (Greene) Kartesz Native PSMA11

  Macoun's cudweed · Asteraceae
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  Pseudognaphalium obtusifolium (L.) Hilliard & B.L. Burtt Native PSOB3

  rabbit-tobacco · Asteraceae
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  Pseudognaphalium obtusifolium (L.) Hilliard & B.L. Burtt ssp. obtusifolium Native PSOBO

  rabbit-tobacco · Asteraceae
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  Pseudolysimachion longifolium (L.) Opiz Introduced PSLO6

  longleaf speedwell · Scrophulariaceae
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  Pteridium aquilinum (L.) Kuhn Native PTAQ

  western brackenfern · Dennstaedtiaceae
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  Pteridium aquilinum (L.) Kuhn var. latiusculum (Desv.) Underw. ex A. Heller Native PTAQL

  western brackenfern · Dennstaedtiaceae
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  Puccinellia distans (Jacq.) Parl. Both PUDI

  weeping alkaligrass · Poaceae
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  Puccinellia distans (Jacq.) Parl. ssp. distans Introduced PUDID

  weeping alkaligrass · Poaceae
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  Puccinellia maritima (Huds.) Parl. Both PUMA

  seaside alkaligrass · Poaceae
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  Puccinellia nuttalliana (Schult.) Hitchc. Native PUNU2

  Nuttall's alkaligrass · Poaceae
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  Puccinellia tenella (Lange) Holmb. ex A.E. Porsild Native PUTE

  tundra alkaligrass · Poaceae
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  Puccinellia tenella (Lange) Holmb. ex A.E. Porsild ssp. langeana (Berlin) Tzvelev Native PUTEL

  tundra alkaligrass · Poaceae
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  Pycnanthemum muticum (Michx.) Pers. Native PYMU

  clustered mountainmint · Lamiaceae
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  Pycnanthemum tenuifolium Schrad. Native PYTE

  narrowleaf mountainmint · Lamiaceae
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  Pyrola americana Sweet Native PYAM

  American wintergreen · Pyrolaceae
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  Pyrola chlorantha Sw. Native PYCH

  greenflowered wintergreen · Pyrolaceae
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  Pyrola elliptica Nutt. Native PYEL

  waxflower shinleaf · Pyrolaceae
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  Pyrus communis L. Introduced PYCO

  common pear · Rosaceae
• ⚘
  Quercus alba L. Native QUAL

  white oak · Fagaceae
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  Quercus ilicifolia Wangenh. Native QUIL

  bear oak · Fagaceae
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  Quercus montana Willd. Native QUMO4

  chestnut oak · Fagaceae
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  Quercus rubra L. Native QURU

  northern red oak · Fagaceae
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  Quercus rubra L. var. ambigua (A. Gray) Fernald Native QURUA

  northern red oak · Fagaceae
• 
  Quercus velutina Lam. Native QUVE

  black oak · Fagaceae
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  Ranunculus abortivus L. Native RAAB

  littleleaf buttercup · Ranunculaceae
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  Ranunculus acris L. Both RAAC3

  tall buttercup · Ranunculaceae
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  Ranunculus acris L. var. acris Introduced RAACA3

  showy buttercup · Ranunculaceae
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  Ranunculus ambigens S. Watson Native RAAM

  waterplantain spearwort · Ranunculaceae
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  Ranunculus bulbosus L. Introduced RABU

  St. Anthony's turnip · Ranunculaceae
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  Ranunculus cymbalaria Pursh Native RACY

  alkali buttercup · Ranunculaceae
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  Ranunculus flabellaris Raf. Native RAFL

  yellow water buttercup · Ranunculaceae
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  Ranunculus flammula L. Native RAFL2

  greater creeping spearwort · Ranunculaceae
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  Ranunculus hispidus Michx. Native RAHI

  bristly buttercup · Ranunculaceae
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  Ranunculus hispidus Michx. var. caricetorum (Greene) T. Duncan Native RAHIC

  bristly buttercup · Ranunculaceae
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  Ranunculus pensylvanicus L. f. Native RAPE2

  Pennsylvania buttercup · Ranunculaceae
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  Ranunculus recurvatus Poir. Native RARE2

  blisterwort · Ranunculaceae
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  Ranunculus recurvatus Poir. var. recurvatus Native RARER2

  blisterwort · Ranunculaceae
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  Ranunculus repens L. Introduced RARE3

  creeping buttercup · Ranunculaceae
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  Ranunculus sceleratus L. Native RASC3

  cursed buttercup · Ranunculaceae
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  Ranunculus sceleratus L. var. sceleratus Native RASCS

  cursed buttercup · Ranunculaceae
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  Ranunculus trichophyllus Chaix Native RATR

  threadleaf crowfoot · Ranunculaceae
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  Ranunculus trichophyllus Chaix var. trichophyllus Native RATRT

  threadleaf crowfoot · Ranunculaceae
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  Raphanus raphanistrum L. Introduced RARA2

  wild radish · Brassicaceae
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  Reseda lutea L. Introduced RELU

  yellow mignonette · Resedaceae
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  Rhamnus alnifolia L'Hér. Native RHAL

  alderleaf buckthorn · Rhamnaceae
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  Rhamnus cathartica L. Introduced RHCA3

  common buckthorn · Rhamnaceae
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  Rheum rhabarbarum L. Introduced RHRH2

  garden rhubarb · Polygonaceae
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  Rhexia virginica L. Native RHVI

  handsome Harry · Melastomataceae