Montana

• Beaverhead 30001
  755 taxa Open ↗
• Big Horn 30003
  565 taxa Open ↗
• Blaine 30005
  333 taxa Open ↗
• Broadwater 30007
  359 taxa Open ↗
• Carbon 30009
  749 taxa Open ↗
• Carter 30011
  454 taxa Open ↗
• Cascade 30013
  768 taxa Open ↗
• Chouteau 30015
  423 taxa Open ↗
• Custer 30017
  458 taxa Open ↗
• Daniels 30019
  384 taxa Open ↗

Showing 101–150 of 465 (introduced).

• 
  Cardaria draba (L.) Desv. Introduced CADR

  whitetop · Brassicaceae 53 counties
• 
  Cardaria pubescens (C.A. Mey.) Jarmolenko Introduced CAPU6

  hairy whitetop · Brassicaceae 9 counties
• 
  Carduus acanthoides L. Introduced CAAC

  spiny plumeless thistle · Asteraceae 6 counties
• 
  Carduus nutans L. Introduced CANU4

  nodding plumeless thistle · Asteraceae 27 counties
• 
  Carthamus tinctorius L. Introduced CATI

  safflower · Asteraceae 3 counties
• 
  Carum carvi L. Introduced CACA19

  caraway · Apiaceae 17 counties
• 
  Centaurea cyanus L. Introduced CECY2

  garden cornflower · Asteraceae 5 counties
• 
  Centaurea diffusa Lam. Introduced CEDI3

  diffuse knapweed · Asteraceae 39 counties
• 
  Centaurea jacea L. Introduced CEJA

  brownray knapweed · Asteraceae 3 counties
• 
  Centaurea macrocephala Puschk. ex Willd. Introduced CEMA9

  bighead knapweed · Asteraceae 1 county
• 
  Centaurea montana L. Introduced CEMO

  perennial cornflower · Asteraceae 2 counties
• 
  Centaurea nigra L. Introduced CENI2

  lesser knapweed · Asteraceae 5 counties
• 
  Centaurea nigrescens Willd. Introduced CENI3

  Tyrol knapweed · Asteraceae 3 counties
• 
  Centaurea scabiosa L. Introduced CESC2

  greater knapweed · Asteraceae 2 counties
• 
  Centaurea solstitialis L. Introduced CESO3

  yellow star-thistle · Asteraceae 6 counties
• 
  Centaurea stoebe L. Introduced CEST8

  spotted knapweed · Asteraceae 56 counties
• 
  Centaurea stoebe L. ssp. micranthos (Gugler) Hayek Introduced CESTM

  spotted knapweed · Asteraceae 56 counties
• 
  Cerastium fontanum Baumg. Introduced CEFO2

  common mouse-ear chickweed · Caryophyllaceae 38 counties
• 
  Cerastium fontanum Baumg. ssp. vulgare (Hartm.) Greuter & Burdet Introduced CEFOV2

  big chickweed · Caryophyllaceae 38 counties
• 
  Cerastium glomeratum Thuill. Introduced CEGL2

  sticky chickweed · Caryophyllaceae 5 counties
• 
  Ceratocephala testiculata (Crantz) Roth Introduced CETE5

  curveseed butterwort · Ranunculaceae 16 counties
• 
  Chaenorhinum minus (L.) Lange Introduced CHMI

  dwarf snapdragon · Scrophulariaceae 3 counties
• 
  Chelidonium majus L. Introduced CHMA2

  celandine · Papaveraceae 1 county
• 
  Chelidonium majus L. var. majus Introduced CHMAM

  celandine · Papaveraceae 1 county
• 
  Chenopodium album L. var. album Introduced CHALA

  lambsquarters · Chenopodiaceae 50 counties
• 
  Chenopodium glaucum L. Introduced CHGL3

  oakleaf goosefoot · Chenopodiaceae 26 counties
• 
  Chenopodium murale L. Introduced CHMU2

  nettleleaf goosefoot · Chenopodiaceae 4 counties
• 
  Chondrilla juncea L. Introduced CHJU

  rush skeletonweed · Asteraceae 4 counties
• 
  Chorispora tenella (Pall.) DC. Introduced CHTE2

  crossflower · Brassicaceae 36 counties
• 
  Cichorium intybus L. Introduced CIIN

  chicory · Asteraceae 29 counties
• 
  Cirsium arvense (L.) Scop. Introduced CIAR4

  Canada thistle · Asteraceae 56 counties
• 
  Cirsium vulgare (Savi) Ten. Introduced CIVU

  bull thistle · Asteraceae 37 counties
• 
  Conium maculatum L. Introduced COMA2

  poison hemlock · Apiaceae 33 counties
• 
  Conringia orientalis (L.) Dumort. Introduced COOR

  hare's ear mustard · Brassicaceae 36 counties
• 
  Consolida ajacis (L.) Schur Introduced COAJ

  doubtful knight's-spur · Ranunculaceae 5 counties
• 
  Convallaria majalis L. Introduced COMA7

  European lily of the valley · Liliaceae 1 county
• 
  Convolvulus arvensis L. Introduced COAR4

  field bindweed · Convolvulaceae 56 counties
• 
  Cotoneaster lucidus Schltdl. Introduced COLU5

  shiny cotoneaster · Rosaceae 1 county
• 
  Crataegus monogyna Jacq. Introduced CRMO3

  oneseed hawthorn · Rosaceae 1 county
• 
  Crepis capillaris (L.) Wallr. Introduced CRCA3

  smooth hawksbeard · Asteraceae 1 county
• 
  Crepis tectorum L. Introduced CRTE3

  narrowleaf hawksbeard · Asteraceae 5 counties
• 
  Cruciata pedemontana (Bellardi) Ehrend. Introduced CRPE10

  piedmont bedstraw · Rubiaceae 2 counties
• 
  Crypsis alopecuroides (Piller & Mitterp.) Schrad. Introduced CRAL2

  foxtail pricklegrass · Poaceae 2 counties
• 
  Cuscuta approximata Bab. Introduced CUAP2

  alfalfa dodder · Cuscutaceae 12 counties
• 
  Cuscuta epithymum (L.) L. Introduced CUEP

  clover dodder · Cuscutaceae 7 counties
• 
  Cynodon dactylon (L.) Pers. Introduced CYDA

  Bermudagrass · Poaceae 2 counties
• 
  Cynoglossum officinale L. Introduced CYOF

  gypsyflower · Boraginaceae 39 counties
• 
  Cynosurus cristatus L. Introduced CYCR

  crested dogstail grass · Poaceae 1 county
• 
  Cytisus scoparius (L.) Link Introduced CYSC4

  Scotch broom · Fabaceae 1 county
• 
  Cytisus scoparius (L.) Link var. scoparius Introduced CYSCS2

  Scotch broom · Fabaceae 1 county