Pennsylvania

• Adams 42001
  1,101 taxa Open ↗
• Allegheny 42003
  1,943 taxa Open ↗
• Armstrong 42005
  1,126 taxa Open ↗
• Beaver 42007
  1,402 taxa Open ↗
• Bedford 42009
  1,989 taxa Open ↗
• Berks 42011
  2,115 taxa Open ↗
• Blair 42013
  1,613 taxa Open ↗
• Bradford 42015
  1,111 taxa Open ↗
• Bucks 42017
  2,298 taxa Open ↗
• Butler 42019
  1,422 taxa Open ↗

Showing 1–44 of 44 (both).

• 
  Achillea millefolium L. Both ACMI2

  common yarrow · Asteraceae 67 counties
• 
  Allium schoenoprasum L. Both ALSC

  wild chives · Liliaceae 6 counties
• 
  Alternanthera paronychioides A. St.-Hil. Both ALPA17

  smooth joyweed · Amaranthaceae 1 county
• 
  Ambrosia artemisiifolia L. Both AMAR2

  annual ragweed · Asteraceae 67 counties
• 
  Artemisia biennis Willd. Both ARBI2

  biennial wormwood · Asteraceae 6 counties
• 
  Artemisia ludoviciana Nutt. Both ARLU

  white sagebrush · Asteraceae 12 counties
• 
  Aruncus dioicus (Walter) Fernald Both ARDI8

  bride's feathers · Rosaceae 18 counties
• 
  Arundinaria tecta (Walter) Muhl. Both ARTE4

  switchcane · Poaceae 1 county
• 
  Bromus inermis Leyss. Both BRIN2

  smooth brome · Poaceae 44 counties
• 
  Calystegia sepium (L.) R. Br. Both CASE13

  hedge false bindweed · Convolvulaceae 67 counties
• 
  Calystegia silvatica (Kit.) Griseb. Both CASI10

  shortstalk false bindweed · Convolvulaceae 15 counties
• 
  Capsicum annuum L. Both CAAN4

  cayenne pepper · Solanaceae 6 counties
• 
  Cerastium arvense L. Both CEAR4

  field chickweed · Caryophyllaceae 33 counties
• 
  Chenopodium album L. Both CHAL7

  lambsquarters · Chenopodiaceae 67 counties
• 
  Croton glandulosus L. Both CRGL2

  vente conmigo · Euphorbiaceae 6 counties
• 
  Cucurbita pepo L. Both CUPE

  field pumpkin · Cucurbitaceae 13 counties
• 
  Cyperus esculentus L. Both CYES

  yellow nutsedge · Cyperaceae 51 counties
• 
  Dysphania ambrosioides (L.) Mosyakin & Clemants Both DYAM

  Mexican tea · Chenopodiaceae 33 counties
• 
  Euphorbia dentata Michx. Both EUDE4

  toothed spurge · Euphorbiaceae 27 counties
• 
  Festuca rubra L. Both FERU2

  red fescue · Poaceae 28 counties
• 
  Geranium robertianum L. Both GERO

  Robert geranium · Geraniaceae 37 counties
• 
  Humulus lupulus L. Both HULU

  common hop · Cannabaceae 43 counties
• 
  Juncus arcticus Willd. Both JUAR2

  arctic rush · Juncaceae 7 counties
• 
  Ludwigia peploides (Kunth) P.H. Raven Both LUPE5

  floating primrose-willow · Onagraceae 6 counties
• 
  Phragmites australis (Cav.) Trin. ex Steud. Both PHAU7

  common reed · Poaceae 22 counties
• 
  Picris hieracioides L. Both PIHI

  hawkweed oxtongue · Asteraceae 16 counties
• 
  Poa nemoralis L. Both PONE

  wood bluegrass · Poaceae 9 counties
• 
  Poa pratensis L. Both POPR

  Kentucky bluegrass · Poaceae 63 counties
• 
  Polygonum scandens L. Both POSC3

  climbing false buckwheat · Polygonaceae 63 counties
• 
  Portulaca oleracea L. Both POOL

  little hogweed · Portulacaceae 38 counties
• 
  Puccinellia distans (Jacq.) Parl. Both PUDI

  weeping alkaligrass · Poaceae 12 counties
• 
  Puccinellia maritima (Huds.) Parl. Both PUMA

  seaside alkaligrass · Poaceae 1 county
• 
  Ranunculus acris L. Both RAAC3

  tall buttercup · Ranunculaceae 61 counties
• 
  Rubus idaeus L. Both RUID

  American red raspberry · Rosaceae 45 counties
• 
  Rumex acetosa L. Both RUAC2

  garden sorrel · Polygonaceae 4 counties
• 
  Sambucus nigra L. Both SANI4

  black elderberry · Caprifoliaceae 67 counties
• 
  Samolus valerandi L. Both SAVA3

  seaside brookweed · Primulaceae 10 counties
• 
  Streptopus amplexifolius (L.) DC. Both STAM2

  claspleaf twistedstalk · Liliaceae 8 counties
• 
  Suaeda maritima (L.) Dumort. Both SUMA

  herbaceous seepweed · Chenopodiaceae 1 county
• 
  Taraxacum officinale F.H. Wigg. Both TAOF

  common dandelion · Asteraceae 65 counties
• 
  Typha angustifolia L. Both TYAN

  narrowleaf cattail · Typhaceae 33 counties
• 
  Urtica dioica L. Both URDI

  stinging nettle · Urticaceae 55 counties
• 
  Veronica serpyllifolia L. Both VESE

  thymeleaf speedwell · Scrophulariaceae 63 counties
• 
  Viburnum opulus L. Both VIOP

  European cranberrybush · Caprifoliaceae 26 counties