Showy Gilia
Gilia cana
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Gilia cana ssp. speciosa
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Blue Field Gilia
Gilia capitata
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Purplespot Gilia
Gilia clivorum
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Hollyleaf Gilia
Gilia latiflora
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Fine Flower Gilia
Gilia leptantha
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Little Gilia
Gilia minor
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Modoc Gilia
Gilia modocensis
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Volcanic Gilia
Gilia ochroleuca
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Eyed Gilia
Gilia ophthalmoides
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Greater Yellowthroat Gilia
Gilia tenuiflora
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Tricolor Gilia
Gilia tricolor
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Sierra Bluecup
Githopsis pulchella
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Sierra Bluecup
Githopsis pulchella ssp. campestris
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Common Bluecup
Githopsis specularioides
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Spiny Greasebush
Glossopetalon spinescens
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Wild Licorice
Glycyrrhiza lepidota
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Western Marsh Cudweed
Gnaphalium palustre
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Bractless Hedge-hyssop
Gratiola ebracteata
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Spiny Hopsage
Grayia spinosa
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Idaho Gumplant
Grindelia nana
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California Matchweed
Gutierrezia californica
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Many-flowered Stickseed
Hackelia floribunda
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Mojave Fissurewort
Halimolobos jaegeri
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Sawtooth Goldenbush
Hazardia squarrosa
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Saw Toothed Goldenbush
Hazardia squarrosa var. grindelioides
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California False Pennyroyal
Hedeoma nana
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California Helianthella
Helianthella californica
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Diablo Helianthella
Helianthella castanea
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Serpentine Sunflower
Helianthus bolanderi
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California Sunflower
Helianthus californicus
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Cusick's Sunflower
Helianthus cusickii
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Serpentine Sunflower
Helianthus exilis
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Nuttall's Sunflower
Helianthus nuttallii
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Showy Goldeneye
Heliomeris multiflora
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Nevada Goldeneye
Heliomeris multiflora var. nevadensis
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Seaside Heliotrope
Heliotropium curassavicum
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Heliotrope
Heliotropium curassavicum var. occulatum
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Hayfield Tarweed
Hemizonia congesta
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Hayfield Tarweed
Hemizonia congesta ssp. clevelandii
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Hayfield Tarweed
Hemizonia congesta ssp. luzulifolia
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Cow Parsnip
Heracleum maximum
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Stemless Dwarf Cudweed
Hesperevax acaulis
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Dwarf Hesperochiron
Hesperochiron pumilus
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McNab Cypress
Hesperocyparis macnabiana
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California Dwarf-flax
Hesperolinon californicum
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Smallflower Dwarf-flax
Hesperolinon micranthum
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Slender Dwarf-flax
Hesperolinon spergulinum
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Narrow-leaved Meconella
Hesperomecon linearis
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Rareflower Heterocodon
Heterocodon rariflorum
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Telegraph Weed
Heterotheca grandiflora
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Oregon False Goldenaster
Heterotheca oregona
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False Goldenaster
Heterotheca sessiliflora
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Bolander's Goldenaster
Heterotheca sessiliflora ssp. bolanderi
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San Bruno Mountain Sessileflower Goldenaster
Heterotheca sessiliflora ssp. bolanderi 'San Bruno Mountain'
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Bristly Goldenaster
Heterotheca sessiliflora ssp. echioides
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Hairy False Goldenaster
Heterotheca villosa
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San Bruno Mountain Hairy Golden Aster
Heterotheca villosa 'San Bruno Mountain'
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Alpine Alumroot
Heuchera cylindrica
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Chartreuse Alumroot
Heuchera cylindrica 'Chartreuse'