Hayfield Tarweed
Hemizonia congesta ssp. congesta
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Hayfield Tarweed
Hemizonia congesta ssp. lutescens
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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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Narrow-leaved Meconella
Hesperomecon linearis
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Rareflower Heterocodon
Heterocodon rariflorum
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False Goldenaster
Heterotheca sessiliflora
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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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Common Mares Tail
Hippuris vulgaris
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Leather Root
Hoita macrostachya
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Round Leaved Psoralea
Hoita orbicularis
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False Spikeflower
Hollisteria lanata
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Heermann's Tarweed
Holocarpha heermannii
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San Joaquin Tarweed
Holocarpha obconica
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Pitgland Tarweed
Holocarpha virgata
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Whitecrown
Holozonia filipes
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Meadow Barley
Hordeum brachyantherum
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Meadow Barley
Hordeum brachyantherum ssp. brachyantherum
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California Meadow Barley
Hordeum brachyantherum ssp. californicum
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Bobtail Barley
Hordeum intercedens
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California Horkelia
Horkelia californica
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California Horkelia
Horkelia californica var. californica
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Floating Marsh Pennywort
Hydrocotyle ranunculoides
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Tinker's Penny
Hypericum anagalloides
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Douglas Iris
Iris douglasiana
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Point Reyes Douglas Iris
Iris douglasiana 'Point Reyes'
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Portuguese Beach Pacifica Iris
Iris douglasiana 'Portuguese Beach'
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Yellow Douglas Iris
Iris douglasiana 'Yellow'
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Central Coast Iris
Iris longipetala
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Orcutt's Quillwort
Isoetes orcuttii
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Baltic Rush
Juncus balticus
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Hairstemmed Rush
Juncus capillaris
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Soft Rush
Juncus effusus
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Corkscrew Rush
Juncus effusus 'Spiralis'
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Falcate Rush
Juncus falcatus
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Sickleleaved Rush
Juncus falcatus ssp. falcatus
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Kellogg's Dwarf Rush
Juncus kelloggii
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Red Bluff Dwarf Rush
Juncus leiospermus
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Mexican Rush
Juncus mexicanus
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Wrinkled Rush
Juncus rugulosus
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Torrey's Rush
Juncus torreyi
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Inch-high Rush
Juncus uncialis
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Irisleaf Rush
Juncus xiphioides
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Gaping Keckiella
Keckiella breviflora
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Junegrass
Koeleria macrantha
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California Ground-cone
Kopsiopsis strobilacea
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Coulter's Horseweed
Laennecia coulteri
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Glandular Hareleaf
Lagophylla glandulosa
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Branched Lagophylla
Lagophylla ramosissima
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California Goldfields
Lasthenia californica
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California Goldfields
Lasthenia californica ssp. californica
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Alkali-sink Goldfields
Lasthenia chrysantha
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Royal Goldfields
Lasthenia coronaria
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Greene's Goldfields
Lasthenia debilis
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Smooth Goldfields
Lasthenia glaberrima
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Yellow Rayed Lasthenia
Lasthenia glabrata
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Small-ray Goldfields
Lasthenia microglossa
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Coastal Goldfields
Lasthenia minor