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 701–750 of 2,748 (native).

• 
  Corallorhiza trifida Chatelain Native COTR18

  yellow coralroot · Orchidaceae 22 counties
• 
  Corallorhiza wisteriana Conrad Native COWI5

  spring coralroot · Orchidaceae 12 counties
• 
  Coreopsis lanceolata L. Native COLA5

  lanceleaf tickseed · Asteraceae 32 counties
• 
  Coreopsis major Walter Native COMA6

  greater tickseed · Asteraceae 1 county
• 
  Coreopsis rosea Nutt. Native CORO

  pink tickseed · Asteraceae 1 county
• 
  Coreopsis tinctoria Nutt. Native COTI3

  golden tickseed · Asteraceae 16 counties
• 
  Coreopsis tinctoria Nutt. var. tinctoria Native COTIT

  golden tickseed · Asteraceae 16 counties
• 
  Coreopsis tripteris L. Native COTR4

  tall tickseed · Asteraceae 24 counties
• 
  Cornus alternifolia L. f. Native COAL2

  alternateleaf dogwood · Cornaceae 66 counties
• 
  Cornus amomum Mill. Native COAM2

  silky dogwood · Cornaceae 63 counties
• 
  Cornus canadensis L. Native COCA13

  bunchberry dogwood · Cornaceae 34 counties
• 
  Cornus drummondii C.A. Mey. Native CODR

  roughleaf dogwood · Cornaceae 1 county
• 
  Cornus florida L. Native COFL2

  flowering dogwood · Cornaceae 64 counties
• 
  Cornus obliqua Raf. Native COOB9

  silky dogwood · Cornaceae 45 counties
• 
  Cornus racemosa Lam. Native CORA6

  gray dogwood · Cornaceae 65 counties
• 
  Cornus rugosa Lam. Native CORU

  roundleaf dogwood · Cornaceae 44 counties
• 
  Cornus sericea L. Native COSE16

  redosier dogwood · Cornaceae 20 counties
• 
  Cornus sericea L. ssp. sericea Native COSES

  redosier dogwood · Cornaceae 20 counties
• 
  Corydalis aurea Willd. Native COAU2

  scrambled eggs · Fumariaceae 5 counties
• 
  Corydalis flavula (Raf.) DC. Native COFL3

  yellow fumewort · Fumariaceae 35 counties
• 
  Corydalis sempervirens (L.) Pers. Native COSE5

  rock harlequin · Fumariaceae 55 counties
• 
  Corylus americana Walter Native COAM3

  American hazelnut · Betulaceae 63 counties
• 
  Corylus cornuta Marshall Native COCO6

  beaked hazelnut · Betulaceae 49 counties
• 
  Corylus cornuta Marshall var. cornuta Native COCOC2

  beaked hazelnut · Betulaceae 49 counties
• 
  Crassula aquatica (L.) Schoenl. Native CRAQ

  water pygmyweed · Crassulaceae 1 county
• 
  Crataegus brainerdii Sarg. Native CRBR3

  Brainerd's hawthorn · Rosaceae 4 counties
• 
  Crataegus calpodendron (Ehrh.) Medik. Native CRCA

  pear hawthorn · Rosaceae 17 counties
• 
  Crataegus chrysocarpa Ashe Native CRCH

  fireberry hawthorn · Rosaceae 26 counties
• 
  Crataegus chrysocarpa Ashe var. chrysocarpa Native CRCHC2

  red haw · Rosaceae 26 counties
• 
  Crataegus crus-galli L. Native CRCR2

  cockspur hawthorn · Rosaceae 33 counties
• 
  Crataegus dilatata Sarg. Native CRDI

  broadleaf hawthorn · Rosaceae 3 counties
• 
  Crataegus dodgei Ashe Native CRDO3

  Dodge's hawthorn · Rosaceae 1 county
• 
  Crataegus flabellata (Bosc ex Spach) K. Koch Native CRFL

  fanleaf hawthorn · Rosaceae 47 counties
• 
  Crataegus intricata Lange Native CRIN3

  Copenhagen hawthorn · Rosaceae 21 counties
• 
  Crataegus macrosperma Ashe Native CRMA3

  bigfruit hawthorn · Rosaceae 2 counties
• 
  Crataegus mollis Scheele Native CRMO2

  downy hawthorn · Rosaceae 2 counties
• ⚘
  Crataegus pedicellata Sarg. Native CRPE

  scarlet hawthorn · Rosaceae 38 counties
• 
  Crataegus phaenopyrum (L. f.) Medik. Native CRPH

  Washington hawthorn · Rosaceae 11 counties
• 
  Crataegus pruinosa (Wendl. f.) K. Koch Native CRPR2

  waxyfruit hawthorn · Rosaceae 36 counties
• 
  Crataegus punctata Jacq. Native CRPU

  dotted hawthorn · Rosaceae 37 counties
• 
  Crataegus succulenta Schrad. ex Link Native CRSU5

  fleshy hawthorn · Rosaceae 16 counties
• 
  Crataegus uniflora Münchh. Native CRUN

  dwarf hawthorn · Rosaceae 14 counties
• 
  Crotalaria sagittalis L. Native CRSA4

  arrowhead rattlebox · Fabaceae 18 counties
• 
  Croton capitatus Michx. Native CRCA6

  hogwort · Euphorbiaceae 4 counties
• 
  Croton capitatus Michx. var. capitatus Native CRCAC2

  hogwort · Euphorbiaceae 4 counties
• 
  Croton glandulosus L. var. septentrionalis Müll. Arg. Native CRGLS

  vente conmigo · Euphorbiaceae 6 counties
• 
  Croton lindheimerianus Scheele Native CRLI2

  threeseed croton · Euphorbiaceae 2 counties
• 
  Croton lindheimerianus Scheele var. lindheimerianus Native CRLIL

  threeseed croton · Euphorbiaceae 2 counties
• 
  Croton michauxii G.L. Webster Native CRMI8

  Michaux's croton · Euphorbiaceae 2 counties
• 
  Croton michauxii G.L. Webster var. ellipticus (Willd.) B.W. van Ee & P.E. Berry Native CRMIE

  Michaux's croton · Euphorbiaceae 2 counties