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 1,851–1,900 of 2,225.

• 
  Scolochloa festucacea (Willd.) Link Native SCFE

  common rivergrass · Poaceae 4 counties
• 
  Scrophularia lanceolata Pursh Native SCLA

  lanceleaf figwort · Scrophulariaceae 12 counties
• 
  Scrophularia marilandica L. Native SCMA2

  carpenter's square · Scrophulariaceae 19 counties
• 
  Scutellaria galericulata L. Native SCGA

  marsh skullcap · Lamiaceae 12 counties
• 
  Scutellaria lateriflora L. Native SCLA2

  blue skullcap · Lamiaceae 22 counties
• 
  Scutellaria lateriflora L. var. lateriflora Native SCLAL2

  blue skullcap · Lamiaceae 22 counties
• 
  Scutellaria nervosa Pursh Native SCNE2

  veiny skullcap · Lamiaceae 2 counties
• 
  Scutellaria ovata Hill Native SCOV

  heartleaf skullcap · Lamiaceae 3 counties
• 
  Scutellaria ovata Hill ssp. ovata Native SCOVO

  heartleaf skullcap · Lamiaceae 3 counties
• 
  Scutellaria parvula Michx. Native SCPA7

  small skullcap · Lamiaceae 27 counties
• 
  Scutellaria parvula Michx. var. missouriensis (Torr.) Goodman & C.A. Lawson Native SCPAM

  Leonard's skullcap · Lamiaceae 26 counties
• 
  Scutellaria parvula Michx. var. parvula Native SCPAP3

  small skullcap · Lamiaceae 3 counties
• 
  Secale cereale L. Introduced SECE

  cereal rye · Poaceae 2 counties
• 
  Securigera varia (L.) Lassen Introduced SEVA4

  crownvetch · Fabaceae 2 counties
• 
  Sedum sarmentosum Bunge Introduced SESA

  stringy stonecrop · Crassulaceae 1 county
• 
  Selaginella rupestris (L.) Spring Native SERU

  northern selaginella · Selaginellaceae 11 counties
• 
  Senecio congestus (R. Br.) DC. Native SECO2

  marsh fleabane · Asteraceae 5 counties
• 
  Senecio integerrimus Nutt. Native SEIN2

  lambstongue ragwort · Asteraceae 5 counties
• 
  Senecio integerrimus Nutt. var. integerrimus Native SEINI

  lambstongue ragwort · Asteraceae 5 counties
• 
  Senna hebecarpa (Fernald) Irwin & Barneby Native SEHE3

  American senna · Fabaceae 1 county
• 
  Senna marilandica (L.) Link Native SEMA11

  Maryland senna · Fabaceae 6 counties
• 
  Setaria faberi Herrm. Introduced SEFA

  Japanese bristlegrass · Poaceae 30 counties
• 
  Setaria italica (L.) P. Beauv. Introduced SEIT

  foxtail millet · Poaceae 3 counties
• 
  Setaria parviflora (Poir.) Kerguélen Native SEPA10

  marsh bristlegrass · Poaceae 2 counties
• 
  Setaria verticillata (L.) P. Beauv. Introduced SEVE3

  hooked bristlegrass · Poaceae 26 counties
• 
  Setaria viridis (L.) P. Beauv. Introduced SEVI4

  green bristlegrass · Poaceae 49 counties
• 
  Setaria viridis (L.) P. Beauv. var. viridis Introduced SEVIV

  green bristlegrass · Poaceae 49 counties
• 
  Shepherdia argentea (Pursh) Nutt. Native SHAR

  silver buffaloberry · Elaeagnaceae 2 counties
• 
  Shinnersoseris rostrata (A. Gray) S. Tomb Native SHRO2

  beaked skeletonweed · Asteraceae 1 county
• 
  Sibara virginica (L.) Rollins Native SIVI2

  Virginia winged rockcress · Brassicaceae 2 counties
• 
  Sicyos angulatus L. Native SIAN

  oneseed bur cucumber · Cucurbitaceae 11 counties
• 
  Sida spinosa L. Native SISP

  prickly fanpetals · Malvaceae 4 counties
• 
  Silene antirrhina L. Native SIAN2

  sleepy silene · Caryophyllaceae 20 counties
• 
  Silene armeria L. Introduced SIAR

  sweet William silene · Caryophyllaceae 1 county
• 
  Silene csereii Baumg. Introduced SICS

  Balkan catchfly · Caryophyllaceae 3 counties
• 
  Silene dichotoma Ehrh. Introduced SIDI2

  forked catchfly · Caryophyllaceae 1 county
• 
  Silene latifolia Poir. Introduced SILA21

  bladder campion · Caryophyllaceae 13 counties
• 
  Silene latifolia Poir. ssp. alba (Mill.) Greuter & Burdet Introduced SILAA3

  bladder campion · Caryophyllaceae 13 counties
• 
  Silene nivea (Nutt.) Muhl. ex Otth Native SINI

  evening campion · Caryophyllaceae 2 counties
• 
  Silene noctiflora L. Introduced SINO

  nightflowering silene · Caryophyllaceae 2 counties
• 
  Silene stellata (L.) W.T. Aiton Native SIST

  widowsfrill · Caryophyllaceae 23 counties
• 
  Silene virginica L. Native SIVI4

  fire pink · Caryophyllaceae 1 county
• 
  Silene virginica L. var. virginica Native SIVIV

  fire pink · Caryophyllaceae 1 county
• 
  Silene vulgaris (Moench) Garcke Introduced SIVU

  maidenstears · Caryophyllaceae 2 counties
• 
  Silphium integrifolium Michx. Native SIIN2

  wholeleaf rosinweed · Asteraceae 15 counties
• 
  Silphium integrifolium Michx. var. deamii L.M. Perry Native SIIND

  Deam's rosinweed · Asteraceae 1 county
• 
  Silphium integrifolium Michx. var. integrifolium Native SIINI

  wholeleaf rosinweed · Asteraceae 2 counties
• 
  Silphium laciniatum L. Native SILA3

  compassplant · Asteraceae 27 counties
• 
  Silphium laciniatum L. var. laciniatum Native SILAL2

  compassplant · Asteraceae 27 counties
• 
  Silphium perfoliatum L. Native SIPE2

  cup plant · Asteraceae 18 counties