Polk County

Showing 51–100 of 683 (native).

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  Asclepias fascicularis Decne. Native ASFA

  Mexican whorled milkweed · Asclepiadaceae
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  Asclepias speciosa Torr. Native ASSP

  showy milkweed · Asclepiadaceae
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  Asyneuma prenanthoides (Durand) McVaugh Native ASPR10

  California harebell · Campanulaceae
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  Athyrium filix-femina (L.) Roth Native ATFI

  common ladyfern · Dryopteridaceae
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  Athyrium filix-femina (L.) Roth ssp. cyclosorum (Rupr.) C. Chr. Native ATFIC

  subarctic ladyfern · Dryopteridaceae
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  Athysanus pusillus (Hook.) Greene Native ATPU

  common sandweed · Brassicaceae
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  Azolla filiculoides Lam. Native AZFI

  Pacific mosquitofern · Azollaceae
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  Azolla microphylla Kaulf. Native AZMI

  Mexican Mosquito Fern · Azollaceae
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  Baccharis pilularis DC. Native BAPI

  coyotebrush · Asteraceae
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  Balsamorhiza deltoidea Nutt. Native BADE2

  deltoid balsamroot · Asteraceae
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  Barbarea orthoceras Ledeb. Native BAOR

  American yellowrocket · Brassicaceae
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  Beckmannia syzigachne (Steud.) Fernald Native BESY

  American sloughgrass · Poaceae
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  Bidens cernua L. Native BICE

  nodding beggartick · Asteraceae
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  Bidens frondosa L. Native BIFR

  devil's beggartick · Asteraceae
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  Blechnum spicant (L.) Sm. Native BLSP

  deer fern · Blechnaceae
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  Botrychium multifidum (S.G. Gmel.) Trevis. Native BOMU

  leathery grapefern · Ophioglossaceae
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  Boykinia major A. Gray Native BOMA3

  large boykinia · Saxifragaceae
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  Boykinia occidentalis Torr. & A. Gray Native BOOC2

  coastal brookfoam · Saxifragaceae
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  Brodiaea coronaria (Salisb.) Engl. Native BRCO3

  crown brodiaea · Liliaceae
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  Brodiaea coronaria (Salisb.) Engl. ssp. coronaria Native BRCOC

  crown brodiaea · Liliaceae
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  Brodiaea elegans Hoover Native BREL

  harvest brodiaea · Liliaceae
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  Bromus carinatus Hook. & Arn. Native BRCA5

  California brome · Poaceae
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  Bromus sitchensis Trin. Native BRSI

  Alaska brome · Poaceae
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  Bromus vulgaris (Hook.) Shear Native BRVU

  Columbia brome · Poaceae
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  Calandrinia ciliata (Ruiz & Pav.) DC. Native CACI2

  fringed redmaids · Portulacaceae
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  Callitriche heterophylla Pursh Native CAHE3

  twoheaded water-starwort · Callitrichaceae
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  Callitriche heterophylla Pursh ssp. bolanderi (Hegelm.) Calder & Roy L. Taylor Native CAHEB3

  Bolander's water-starwort · Callitrichaceae
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  Callitriche heterophylla Pursh ssp. heterophylla Native CAHEH

  twoheaded water-starwort · Callitrichaceae
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  Calochortus tolmiei Hook. & Arn. Native CATO

  Tolmie star-tulip · Liliaceae
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  Caltha leptosepala DC. Native CALE4

  white marsh marigold · Ranunculaceae
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  Calypso bulbosa (L.) Oakes Native CABU

  fairy slipper · Orchidaceae
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  Calypso bulbosa (L.) Oakes var. occidentalis (Holz.) B. Boivin Native CABUO

  fairy slipper · Orchidaceae
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  Calystegia atriplicifolia Hallier f. Native CAAT9

  nightblooming false bindweed · Convolvulaceae
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  Calystegia atriplicifolia Hallier f. ssp. atriplicifolia Native CAATA

  nightblooming false bindweed · Convolvulaceae
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  Camassia leichtlinii (Baker) S. Watson Native CALE5

  large camas · Liliaceae
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  Camassia leichtlinii (Baker) S. Watson ssp. suksdorfii (Greenm.) Gould Native CALES2

  Suksdorf's large camas · Liliaceae
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  Camassia quamash (Pursh) Greene Native CAQU2

  small camas · Liliaceae
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  Camassia quamash (Pursh) Greene ssp. maxima Gould Native CAQUM

  small camas · Liliaceae
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  Camassia quamash (Pursh) Greene ssp. quamash Native CAQUQ

  small camas · Liliaceae
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  Campanula scouleri Hook. ex A. DC. Native CASC7

  pale bellflower · Campanulaceae
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  Cardamine angulata Hook. Native CAAN5

  seaside bittercress · Brassicaceae
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  Cardamine californica (Nutt.) Greene Native CACA39

  milkmaids · Brassicaceae
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  Cardamine californica (Nutt.) Greene var. integrifolia (Nutt.) Rollins Native CACAI3

  milkmaids · Brassicaceae
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  Cardamine nuttallii Greene Native CANU17

  Nuttall's toothwort · Brassicaceae
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  Cardamine nuttallii Greene var. nuttallii Native CANUN2

  palmate toothwort · Brassicaceae
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  Cardamine occidentalis (S. Watson ex B.L. Rob.) Howell Native CAOC

  big western bittercress · Brassicaceae
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  Cardamine oligosperma Nutt. Native CAOL

  little western bittercress · Brassicaceae
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  Cardamine penduliflora O.E. Schulz Native CAPE2

  Willamette Valley bittercress · Brassicaceae
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  Carex arcta Boott Native CAAR2

  northern cluster sedge · Cyperaceae
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  Carex californica L.H. Bailey Native CACA9

  California sedge · Cyperaceae