Lassen County

Showing 801–850 of 1,695.

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  Hemizonella minima (A. Gray) A. Gray Native HEMI20

  opposite-leaved tarweed · Asteraceae
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  Hesperochiron californicus (Benth.) S. Watson Native HECA7

  California hesperochiron · Hydrophyllaceae
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  Hesperochiron pumilus (Douglas ex Griseb.) Porter Native HEPU6

  dwarf hesperochiron · Hydrophyllaceae
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  Hesperolinon micranthum (A. Gray) Small Native HEMI9

  smallflower dwarf-flax · Linaceae
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  Hesperostipa comata (Trin. & Rupr.) Barkworth Native HECO26

  needle and thread · Poaceae
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  Heteranthera dubia (Jacq.) MacMill. Native HEDU2

  grassleaf mudplantain · Pontederiaceae
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  Heterocodon rariflorum Nutt. Native HERA3

  rareflower heterocodon · Campanulaceae
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  Heterotheca villosa (Pursh) Shinners Native HEVI4

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

  hairy false goldenaster · Asteraceae
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  Heuchera rubescens Torr. Native HERU

  pink alumroot · Saxifragaceae
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  Hieracium albiflorum Hook. Native HIAL2

  white hawkweed · Asteraceae
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  Hieracium horridum Fr. Native HIHO

  prickly hawkweed · Asteraceae
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  Hieracium scouleri Hook. Native HISC2

  Scouler's woollyweed · Asteraceae
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  Hieracium scouleri Hook. var. nudicaule (A. Gray) Cronquist Native HISCN

  Scouler's woollyweed · Asteraceae
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  Hippuris vulgaris L. Native HIVU2

  common mare's-tail · Hippuridaceae
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  Holosteum umbellatum L. Introduced HOUM

  jagged chickweed · Caryophyllaceae
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  Hordeum brachyantherum Nevski Native HOBR2

  meadow barley · Poaceae
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  Hordeum brachyantherum Nevski ssp. brachyantherum Native HOBRB2

  meadow barley · Poaceae
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  Hordeum brachyantherum Nevski ssp. californicum (Covas & Stebbins) Bothmer, N. Jacobsen & Seberg Native HOBRC2

  California barley · Poaceae
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  Hordeum jubatum L. Native HOJU

  foxtail barley · Poaceae
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  Hordeum jubatum L. ssp. jubatum Native HOJUJ

  foxtail barley · Poaceae
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  Hordeum marinum Huds. Introduced HOMA2

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

  Mediterranean barley · Poaceae
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  Horkelia fusca Lindl. Native HOFU

  pinewoods horkelia · Rosaceae
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  Horkelia fusca Lindl. ssp. parviflora (Nutt. ex Torr. & A. Gray) D.D. Keck Native HOFUP2

  smallflower horkelia · Rosaceae
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  Horkelia fusca Lindl. ssp. tenella (S. Watson) D.D. Keck Native HOFUT

  pinewoods horkelia · Rosaceae
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  Horkelia tridentata Torr. Native HOTR

  threetooth horkelia · Rosaceae
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  Horkelia tridentata Torr. ssp. flavescens (Rydb.) D.D. Keck Native HOTRF

  threetooth horkelia · Rosaceae
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  Horkelia tridentata Torr. ssp. tridentata Native HOTRT

  threetooth horkelia · Rosaceae
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  Hornungia procumbens (L.) Hayek Native HOPR4

  prostrate hutchinsia · Brassicaceae
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  Hulsea nana A. Gray Native HUNA

  dwarf alpinegold · Asteraceae
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  Hydrophyllum capitatum Douglas ex Benth. Native HYCA4

  ballhead waterleaf · Hydrophyllaceae
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  Hydrophyllum capitatum Douglas ex Benth. var. alpinum S. Watson Native HYCAA

  alpine waterleaf · Hydrophyllaceae
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  Hypericum anagalloides Cham. & Schltdl. Native HYAN2

  tinker's penny · Clusiaceae
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  Hypericum scouleri Hook. Native HYSC5

  Scouler's St. Johnswort · Clusiaceae
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  Hypericum scouleri Hook. ssp. scouleri Native HYSCS2

  Scouler's St. Johnswort · Clusiaceae
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  Idahoa scapigera (Hook.) A. Nelson & J.F. Macbr. Native IDSC

  oldstem idahoa · Brassicaceae
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  Iliamna bakeri (Jeps.) Wiggins Native ILBA

  Baker's wild hollyhock · Malvaceae
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  Ipomopsis aggregata (Pursh) V.E. Grant Native IPAG

  scarlet gilia · Polemoniaceae
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  Ipomopsis aggregata (Pursh) V.E. Grant ssp. bridgesii (A. Gray) V.E. Grant & A.D. Grant Native IPAGB

  scarlet gilia · Polemoniaceae
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  Ipomopsis congesta (Hook.) V.E. Grant Native IPCO5

  ballhead ipomopsis · Polemoniaceae
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  Ipomopsis congesta (Hook.) V.E. Grant ssp. congesta Native IPCOC3

  ballhead ipomopsis · Polemoniaceae
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  Ipomopsis tenuituba (Rydb.) V.E. Grant Native IPTE4

  slendertube skyrocket · Polemoniaceae
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  Ipomopsis tenuituba (Rydb.) V.E. Grant ssp. tenuituba Native IPTET2

  slendertube skyrocket · Polemoniaceae
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  Iris missouriensis Nutt. Native IRMI

  Rocky Mountain iris · Iridaceae
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  Isatis tinctoria L. Introduced ISTI

  Dyer's woad · Brassicaceae
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  Isoetes bolanderi Engelm. Native ISBO

  Bolander's quillwort · Isoetaceae
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  Isoetes howellii Engelm. Native ISHO

  Howell's quillwort · Isoetaceae
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  Isoetes nuttallii A. Braun ex Engelm. Native ISNU

  Nuttall's quillwort · Isoetaceae
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  Iva axillaris Pursh Native IVAX

  povertyweed · Asteraceae