Polk County

Showing 401–450 of 971.

• 
  Guillenia lasiophylla (Hook. & Arn.) Greene Native GULA4

  California mustard · Brassicaceae
• 
  Gymnocarpium dryopteris (L.) Newman Native GYDR

  western oakfern · Dryopteridaceae
• 
  Hedera helix L. Introduced HEHE

  English ivy · Araliaceae
• 
  Heracleum maximum W. Bartram Native HEMA80

  common cowparsnip · Apiaceae
• 
  Heterotheca oregona (Nutt.) Shinners Native HEOR2

  Oregon false goldenaster · Asteraceae
• 
  Heterotheca villosa (Pursh) Shinners Native HEVI4

  hairy false goldenaster · Asteraceae
• 
  Heterotheca villosa (Pursh) Shinners var. minor (Hook.) Semple Native HEVIM3

  hairy false goldenaster · Asteraceae
• 
  Heuchera micrantha Douglas ex Lindl. Native HEMI7

  crevice alumroot · Saxifragaceae
• 
  Heuchera micrantha Douglas ex Lindl. var. micrantha Native HEMIM2

  crevice alumroot · Saxifragaceae
• 
  Hieracium albiflorum Hook. Native HIAL2

  white hawkweed · Asteraceae
• 
  Hieracium scouleri Hook. Native HISC2

  Scouler's woollyweed · Asteraceae
• 
  Holcus lanatus L. Introduced HOLA

  common velvetgrass · Poaceae
• 
  Holcus mollis L. Introduced HOMO

  creeping velvetgrass · Poaceae
• 
  Holodiscus discolor (Pursh) Maxim. Native HODI

  oceanspray · Rosaceae
• 
  Hordeum brachyantherum Nevski Native HOBR2

  meadow barley · Poaceae
• 
  Hordeum marinum Huds. Introduced HOMA2

  seaside barley · Poaceae
• 
  Hordeum marinum Huds. ssp. gussoneanum (Parl.) Thell. Introduced HOMAG

  Mediterranean barley · Poaceae
• 
  Horkelia congesta Douglas ex Hook. Native HOCO

  Sierra horkelia · Rosaceae
• 
  Horkelia congesta Douglas ex Hook. ssp. congesta Native HOCOC

  Sierra horkelia · Rosaceae
• 
  Humulus lupulus L. Both HULU

  common hop · Cannabaceae
• 
  Humulus lupulus L. var. neomexicanus A. Nelson & Cockerell Native HULUN

  common hop · Cannabaceae
• 
  Hydrophyllum occidentale (S. Watson) A. Gray Native HYOC

  western waterleaf · Hydrophyllaceae
• 
  Hydrophyllum tenuipes A. Heller Native HYTE

  Pacific waterleaf · Hydrophyllaceae
• 
  Hypericum anagalloides Cham. & Schltdl. Native HYAN2

  tinker's penny · Clusiaceae
• 
  Hypericum perforatum L. Introduced HYPE

  common St. Johnswort · Clusiaceae
• 
  Hypochaeris glabra L. Introduced HYGL2

  smooth cat's ear · Asteraceae
• 
  Hypochaeris radicata L. Introduced HYRA3

  hairy cat's ear · Asteraceae
• 
  Ilex aquifolium L. Introduced ILAQ80

  English holly · Aquifoliaceae
• 
  Inula helenium L. Introduced INHE

  elecampane inula · Asteraceae
• 
  Iris chrysophylla Howell Native IRCH

  yellowleaf iris · Iridaceae
• 
  Iris tenax Douglas ex Lindl. Native IRTE

  toughleaf iris · Iridaceae
• 
  Iris tenax Douglas ex Lindl. ssp. tenax Native IRTET

  toughleaf iris · Iridaceae
• 
  Juncus arcticus Willd. Both JUAR2

  arctic rush · Juncaceae
• 
  Juncus arcticus Willd. ssp. littoralis (Engelm.) Hultén Native JUARL

  mountain rush · Juncaceae
• 
  Juncus bufonius L. Native JUBU

  toad rush · Juncaceae
• 
  Juncus covillei Piper Native JUCO5

  Coville's rush · Juncaceae
• 
  Juncus covillei Piper var. covillei Native JUCOC

  Coville's rush · Juncaceae
• 
  Juncus effusus L. Native JUEF

  common rush · Juncaceae
• 
  Juncus ensifolius Wikstr. Native JUEN

  swordleaf rush · Juncaceae
• 
  Juncus oxymeris Engelm. Native JUOX

  pointed rush · Juncaceae
• 
  Juncus patens E. Mey. Native JUPA2

  spreading rush · Juncaceae
• 
  Juncus tenuis Willd. Native JUTE

  poverty rush · Juncaceae
• 
  Kickxia elatine (L.) Dumort. Introduced KIEL

  sharpleaf cancerwort · Scrophulariaceae
• 
  Koeleria macrantha (Ledeb.) Schult. Native KOMA

  prairie Junegrass · Poaceae
• 
  Lactuca saligna L. Introduced LASA

  willowleaf lettuce · Asteraceae
• 
  Lactuca serriola L. Introduced LASE

  prickly lettuce · Asteraceae
• 
  Lamium amplexicaule L. Introduced LAAM

  henbit deadnettle · Lamiaceae
• 
  Lamium purpureum L. Introduced LAPU2

  purple deadnettle · Lamiaceae
• 
  Lapsana communis L. Introduced LACO3

  common nipplewort · Asteraceae
• 
  Lasthenia glaberrima DC. Native LAGL3

  smooth goldfields · Asteraceae