Orange County

Showing 601–650 of 1,336.

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  Hazardia squarrosa (Hook. & Arn.) Greene Native HASQ2

  sawtooth goldenbush · Asteraceae
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  Hazardia squarrosa (Hook. & Arn.) Greene var. grindelioides (DC.) W.D. Clark Native HASQG2

  sawtooth bristleweed · Asteraceae
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  Hedera helix L. Introduced HEHE

  English ivy · Araliaceae
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  Hedera helix L. ssp. canariensis (Willd.) Cout. Introduced HEHEC

  Algerian ivy · Araliaceae
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  Hedypnois cretica (L.) Dum. Cours. Introduced HECR2

  Cretanweed · Asteraceae
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  Helenium puberulum DC. Native HEPU2

  rosilla · Asteraceae
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  Helianthemum scoparium Nutt. Native HESC2

  Bisbee Peak rushrose · Cistaceae
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  Helianthus annuus L. Native HEAN3

  common sunflower · Asteraceae
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  Helianthus ciliaris DC. Native HECI

  Texas blueweed · Asteraceae
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  Helianthus gracilentus A. Gray Native HEGR3

  slender sunflower · Asteraceae
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  Helianthus nuttallii Torr. & A. Gray Native HENU

  Nuttall's sunflower · Asteraceae
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  Helianthus nuttallii Torr. & A. Gray ssp. parishii (A. Gray) Heiser Native HENUP

  Parish's sunflower · Asteraceae
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  Heliomeris hispida (A. Gray) Cockerell Native HEHI6

  rough false goldeneye · Asteraceae
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  Heliotropium curassavicum L. Native HECU3

  salt heliotrope · Boraginaceae
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  Heliotropium curassavicum L. var. oculatum (A. Heller) I.M. Johnst. Native HECUO

  seaside heliotrope · Boraginaceae
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  Hemizonia fasciculata (DC.) Torr. & A. Gray Native HEFA

  clustered tarweed · Asteraceae
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  Hemizonia kelloggii Greene Native HEKE

  Kellogg's tarweed · Asteraceae
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  Hesperocnide tenella Torr. Native HETE5

  western stingingnettle · Urticaceae
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  Hesperocyparis forbesii (Jeps.) Bartel Native HEFO10

  tecate cypress · Cupressaceae
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  Hesperoyucca whipplei (Torr.) Baker Native HEWH

  chaparral yucca · Agavaceae
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  Heteromeles arbutifolia (Lindl.) M. Roem. Native HEAR5

  toyon · Rosaceae
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  Heteromeles arbutifolia (Lindl.) M. Roem. var. arbutifolia Native HEARA2

  toyon · Rosaceae
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  Heterotheca grandiflora Nutt. Native HEGR7

  telegraphweed · Asteraceae
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  Heterotheca sessiliflora (Nutt.) Shinners Native HESE

  sessileflower false goldenaster · Asteraceae
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  Heterotheca sessiliflora (Nutt.) Shinners ssp. echioides (Benth.) Semple Native HESEE2

  sessileflower false goldenaster · Asteraceae
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  Heterotheca sessiliflora (Nutt.) Shinners ssp. fastigiata (Greene) Semple Native HESEF2

  sessileflower false goldenaster · Asteraceae
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  Heterotheca sessiliflora (Nutt.) Shinners ssp. fastigiata (Greene) Semple var. fastigiata Native HESEF3

  sessileflower false goldenaster · Asteraceae
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  Hibiscus trionum L. Introduced HITR

  flower of an hour · Malvaceae
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  Hirschfeldia incana (L.) Lagr.-Foss. Introduced HIIN3

  shortpod mustard · Brassicaceae
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  Hoita macrostachya (DC.) Rydb. Native HOMA4

  large leather-root · Fabaceae
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  Hoita orbicularis (Lindl.) Rydb. Native HOOR

  roundleaf leather-root · Fabaceae
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  Holocarpha virgata (A. Gray) D.D. Keck Native HOVI

  yellowflower tarweed · Asteraceae
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  Holocarpha virgata (A. Gray) D.D. Keck ssp. elongata D.D. Keck Native HOVIE

  wand tarbush · Asteraceae
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  Holodiscus discolor (Pursh) Maxim. Native HODI

  oceanspray · Rosaceae
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  Hordeum brachyantherum Nevski Native HOBR2

  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 depressum (Scribn. & J.G. Sm.) Rydb. Native HODE2

  dwarf barley · Poaceae
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  Hordeum intercedens Nevski Native HOIN2

  bobtail 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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  Hordeum murinum L. Introduced HOMU

  mouse barley · Poaceae
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  Hordeum murinum L. ssp. glaucum (Steud.) Tzvelev Introduced HOMUG

  smooth barley · Poaceae
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  Hordeum murinum L. ssp. leporinum (Link) Arcang. Introduced HOMUL

  hare barley · Poaceae
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  Hordeum vulgare L. Introduced HOVU

  common barley · Poaceae
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  Horkelia cuneata Lindl. Native HOCU

  wedgeleaf horkelia · Rosaceae
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  Horkelia cuneata Lindl. ssp. puberula (Greene) D.D. Keck Native HOCUP

  wedgeleaf horkelia · Rosaceae
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  Hulsea heterochroma A. Gray Native HUHE

  redray alpinegold · Asteraceae
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  Hydrocotyle ranunculoides L. f. Native HYRA

  floating marshpennywort · Apiaceae
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  Hydrocotyle umbellata L. Native HYUM

  manyflower marshpennywort · Apiaceae
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  Hydrocotyle verticillata Thunb. Native HYVE2

  whorled marshpennywort · Apiaceae