Iowa

• Adair 19001
  393 taxa Open ↗
• Adams 19003
  200 taxa Open ↗
• Allamakee 19005
  118 taxa Open ↗
• Appanoose 19007
  38 taxa Open ↗
• Audubon 19009
  225 taxa Open ↗
• Benton 19011
  21 taxa Open ↗
• Black Hawk 19013
  33 taxa Open ↗
• Boone 19015
  146 taxa Open ↗
• Bremer 19017
  24 taxa Open ↗
• Buchanan 19019
  16 taxa Open ↗

Showing 51–100 of 343 (introduced).

• 
  Bromus racemosus L. Introduced BRRA2

  bald brome · Poaceae 5 counties
• 
  Bromus secalinus L. Introduced BRSE

  rye brome · Poaceae 31 counties
• 
  Bromus secalinus L. var. secalinus Introduced BRSES

  rye brome · Poaceae 31 counties
• 
  Bromus tectorum L. Introduced BRTE

  cheatgrass · Poaceae 57 counties
• 
  Buglossoides arvensis (L.) I.M. Johnst. Introduced BUAR3

  corn gromwell · Boraginaceae 1 county
• 
  Camelina microcarpa Andrz. ex DC. Introduced CAMI2

  littlepod false flax · Brassicaceae 3 counties
• 
  Camelina sativa (L.) Crantz Introduced CASA2

  false flax · Brassicaceae 2 counties
• 
  Camelina sativa (L.) Crantz ssp. sativa Introduced CASAS2

  gold-of-pleasure · Brassicaceae 2 counties
• 
  Campanula rapunculoides L. Introduced CARA

  rampion bellflower · Campanulaceae 3 counties
• 
  Cannabis sativa L. Introduced CASA3

  marijuana · Cannabaceae 14 counties
• 
  Cannabis sativa L. ssp. sativa Introduced CASAS3

  marijuana · Cannabaceae 14 counties
• 
  Cannabis sativa L. ssp. sativa var. sativa Introduced CASAS9

  marijuana · Cannabaceae 11 counties
• 
  Capsella bursa-pastoris (L.) Medik. Introduced CABU2

  shepherd's purse · Brassicaceae 19 counties
• 
  Cardamine hirsuta L. Introduced CAHI3

  hairy bittercress · Brassicaceae 1 county
• 
  Cardaria draba (L.) Desv. Introduced CADR

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

  spiny plumeless thistle · Asteraceae 7 counties
• 
  Carduus nutans L. Introduced CANU4

  nodding plumeless thistle · Asteraceae 14 counties
• 
  Carum carvi L. Introduced CACA19

  caraway · Apiaceae 6 counties
• 
  Celastrus orbiculatus Thunb. Introduced CEOR7

  Oriental bittersweet · Celastraceae 1 county
• 
  Centaurea cyanus L. Introduced CECY2

  garden cornflower · Asteraceae 1 county
• 
  Centaurea solstitialis L. Introduced CESO3

  yellow star-thistle · Asteraceae 2 counties
• 
  Centaurea stoebe L. Introduced CEST8

  spotted knapweed · Asteraceae 1 county
• 
  Centaurea stoebe L. ssp. micranthos (Gugler) Hayek Introduced CESTM

  spotted knapweed · Asteraceae 1 county
• 
  Cerastium fontanum Baumg. Introduced CEFO2

  common mouse-ear chickweed · Caryophyllaceae 4 counties
• 
  Cerastium fontanum Baumg. ssp. vulgare (Hartm.) Greuter & Burdet Introduced CEFOV2

  big chickweed · Caryophyllaceae 4 counties
• 
  Cerastium glomeratum Thuill. Introduced CEGL2

  sticky chickweed · Caryophyllaceae 2 counties
• 
  Chaenorhinum minus (L.) Lange Introduced CHMI

  dwarf snapdragon · Scrophulariaceae 6 counties
• 
  Chaiturus marrubiastrum (L.) Rchb. Introduced CHMA18

  lion's tail · Lamiaceae 3 counties
• 
  Chelidonium majus L. Introduced CHMA2

  celandine · Papaveraceae 2 counties
• 
  Chelidonium majus L. var. majus Introduced CHMAM

  celandine · Papaveraceae 2 counties
• 
  Chenopodium glaucum L. Introduced CHGL3

  oakleaf goosefoot · Chenopodiaceae 1 county
• 
  Chenopodium murale L. Introduced CHMU2

  nettleleaf goosefoot · Chenopodiaceae 1 county
• 
  Chenopodium urbicum L. Introduced CHUR

  city goosefoot · Chenopodiaceae 1 county
• 
  Chorispora tenella (Pall.) DC. Introduced CHTE2

  crossflower · Brassicaceae 2 counties
• 
  Cichorium intybus L. Introduced CIIN

  chicory · Asteraceae 11 counties
• 
  Cirsium arvense (L.) Scop. Introduced CIAR4

  Canada thistle · Asteraceae 20 counties
• 
  Cirsium vulgare (Savi) Ten. Introduced CIVU

  bull thistle · Asteraceae 9 counties
• 
  Commelina communis L. Introduced COCO3

  Asiatic dayflower · Commelinaceae 3 counties
• 
  Conium maculatum L. Introduced COMA2

  poison hemlock · Apiaceae 8 counties
• 
  Conringia orientalis (L.) Dumort. Introduced COOR

  hare's ear mustard · Brassicaceae 2 counties
• 
  Consolida ajacis (L.) Schur Introduced COAJ

  doubtful knight's-spur · Ranunculaceae 3 counties
• 
  Convolvulus arvensis L. Introduced COAR4

  field bindweed · Convolvulaceae 12 counties
• 
  Cucumis sativus L. Introduced CUSA4

  garden cucumber · Cucurbitaceae 1 county
• 
  Cynoglossum officinale L. Introduced CYOF

  gypsyflower · Boraginaceae 12 counties
• 
  Cyperus esculentus L. var. leptostachyus Boeckeler Introduced CYESL

  yellow nutsedge · Cyperaceae 19 counties
• 
  Dactylis glomerata L. Introduced DAGL

  orchardgrass · Poaceae 21 counties
• 
  Dactylis glomerata L. ssp. glomerata Introduced DAGLG

  orchardgrass · Poaceae 21 counties
• 
  Datura stramonium L. Introduced DAST

  jimsonweed · Solanaceae 13 counties
• 
  Daucus carota L. Introduced DACA6

  Queen Anne's lace · Apiaceae 26 counties
• 
  Descurainia sophia (L.) Webb ex Prantl Introduced DESO2

  herb sophia · Brassicaceae 10 counties