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 451–500 of 2,225.

• 
  Carex tuckermanii Dewey Native CATU2

  Tuckerman's sedge · Cyperaceae 1 county
• 
  Carex typhina Michx. Native CATY

  cattail sedge · Cyperaceae 2 counties
• 
  Carex umbellata Schkuhr ex Willd. Native CAUM4

  parasol sedge · Cyperaceae 3 counties
• 
  Carex utriculata Boott Native CAUT

  Northwest Territory sedge · Cyperaceae 4 counties
• 
  Carex vulpinoidea Michx. Native CAVU2

  fox sedge · Cyperaceae 26 counties
• 
  Carex vulpinoidea Michx. var. vulpinoidea Native CAVUV

  fox sedge · Cyperaceae 25 counties
• 
  Carpinus caroliniana Walter Native CACA18

  American hornbeam · Betulaceae 2 counties
• 
  Carpinus caroliniana Walter ssp. virginiana (Marshall) Furlow Native CACAV

  American hornbeam · Betulaceae 1 county
• 
  Carum carvi L. Introduced CACA19

  caraway · Apiaceae 6 counties
• 
  Carya cordiformis (Wangenh.) K. Koch Native CACO15

  bitternut hickory · Juglandaceae 22 counties
• 
  Carya glabra (Mill.) Sweet Native CAGL8

  pignut hickory · Juglandaceae 1 county
• 
  Carya illinoinensis (Wangenh.) K. Koch Native CAIL2

  pecan · Juglandaceae 1 county
• 
  Carya laciniosa (Michx. f.) G. Don Native CALA21

  shellbark hickory · Juglandaceae 1 county
• 
  Carya ovata (Mill.) K. Koch Native CAOV2

  shagbark hickory · Juglandaceae 13 counties
• 
  Carya tomentosa (Lam.) Nutt. Native CATO6

  mockernut hickory · Juglandaceae 8 counties
• 
  Castanea dentata (Marshall) Borkh. Native CADE12

  American chestnut · Fagaceae 1 county
• 
  Castilleja coccinea (L.) Spreng. Native CACO17

  scarlet Indian paintbrush · Scrophulariaceae 6 counties
• 
  Castilleja sessiliflora Pursh Native CASE5

  downy paintedcup · Scrophulariaceae 15 counties
• 
  Catalpa speciosa (Warder) Warder ex Engelm. Native CASP8

  northern catalpa · Bignoniaceae 6 counties
• 
  Caulophyllum thalictroides (L.) Michx. Native CATH2

  blue cohosh · Berberidaceae 12 counties
• 
  Ceanothus americanus L. Native CEAM

  New Jersey tea · Rhamnaceae 20 counties
• 
  Ceanothus herbaceus Raf. Native CEHE

  Jersey tea · Rhamnaceae 21 counties
• 
  Celastrus orbiculatus Thunb. Introduced CEOR7

  Oriental bittersweet · Celastraceae 1 county
• 
  Celastrus scandens L. Native CESC

  American bittersweet · Celastraceae 14 counties
• 
  Celtis occidentalis L. Native CEOC

  common hackberry · Ulmaceae 15 counties
• 
  Cenchrus longispinus (Hack.) Fernald Native CELO3

  mat sandbur · Poaceae 27 counties
• 
  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
• 
  Cephalanthus occidentalis L. Native CEOC2

  common buttonbush · Rubiaceae 12 counties
• 
  Cerastium brachypodum (Engelm. ex A. Gray) B.L. Rob. Native CEBR3

  shortstalk chickweed · Caryophyllaceae 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
• 
  Cerastium nutans Raf. Native CENU2

  nodding chickweed · Caryophyllaceae 3 counties
• 
  Cerastium nutans Raf. var. nutans Native CENUN

  nodding chickweed · Caryophyllaceae 3 counties
• 
  Ceratophyllum demersum L. Native CEDE4

  coon's tail · Ceratophyllaceae 9 counties
• 
  Ceratophyllum echinatum A. Gray Native CEEC2

  spineless hornwort · Ceratophyllaceae 1 county
• 
  Cercis canadensis L. Native CECA4

  eastern redbud · Fabaceae 6 counties
• 
  Cercis canadensis L. var. canadensis Native CECAC

  eastern redbud · Fabaceae 6 counties
• 
  Chaenorhinum minus (L.) Lange Introduced CHMI

  dwarf snapdragon · Scrophulariaceae 6 counties
• 
  Chaerophyllum procumbens (L.) Crantz Native CHPR

  spreading chervil · Apiaceae 4 counties
• 
  Chaerophyllum procumbens (L.) Crantz var. procumbens Native CHPRP

  spreading chervil · Apiaceae 4 counties
• 
  Chaiturus marrubiastrum (L.) Rchb. Introduced CHMA18

  lion's tail · Lamiaceae 3 counties
• 
  Chamaecrista fasciculata (Michx.) Greene Native CHFA2

  partridge pea · Fabaceae 28 counties
• 
  Chamaecrista fasciculata (Michx.) Greene var. fasciculata Native CHFAF

  partridge pea · Fabaceae 28 counties
• 
  Chamaesyce geyeri (Engelm. & A. Gray) Small Native CHGE2

  Geyer's sandmat · Euphorbiaceae 2 counties
• 
  Chamaesyce geyeri (Engelm. & A. Gray) Small var. geyeri Native CHGEG

  Geyer's sandmat · Euphorbiaceae 2 counties
• 
  Chamaesyce glyptosperma (Engelm.) Small Native CHGL13

  ribseed sandmat · Euphorbiaceae 17 counties