Tolmie's Star Tulip
Calochortus tolmiei
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Calochortus tolmiei
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Calochortus venustus 'Burgundy'
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Calochortus weedii
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Calycanthus occidentalis
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Calystegia macrostegia
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Calystegia macrostegia 'Anacapa Pink'
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Calystegia macrostegia ssp. cyclostegia
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Calystegia macrostegia ssp. cyclostegia 'Candy Cane'
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Calystegia purpurata
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Calystegia soldanella
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Camassia quamash 'Blue Melody'
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Camassia quamash 'Orion'
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Camassia quamash 'White'
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Camissoniopsis cheiranthifolia
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Campanula rotundifolia
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Carex aquatilis
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Carex barbarae
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Carex comosa
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Carex livida
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Carex praegracilis 'Laguna Mountain'
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Carex scirpoidea
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Carex subfusca 'Tehachapi'
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Carex tumulicola
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Carex tumulicola 'Bodega Bay'
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Carex utriculata
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Carex viridula
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Carpenteria californica
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Carpenteria californica 'Elizabeth'
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Castilleja miniata
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Castilleja wightii
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Ceanothus 'Gentian Plume'
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Ceanothus cordulatus
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Ceanothus cuneatus
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Ceanothus velutinus
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Cephalanthus occidentalis
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Ceratophyllum demersum
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Chaenactis douglasii
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Chaenactis glabriuscula
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Chamaebatiaria millefolium
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Chamerion angustifolium
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Chenopodium rubrum
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Chilopsis linearis
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Chilopsis linearis ssp. arcuata 'Burgundy'
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Chilopsis linearis ssp. arcuata 'Desert Way'
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Chlorogalum parviflorum
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Chlorogalum pomeridianum
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Chorizanthe staticoides
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Chrysolepis sempervirens
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Chrysopsis villosa 'San Bruno Mountain'
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Cinna latifolia
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Cirsium occidentale
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Cistanthe maritima
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Clarkia amoena
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Clarkia amoena 'Aurora'
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Clarkia amoena 'Scarlet'
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Clarkia amoena ssp. whitneyi
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Clarkia concinna
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Clarkia purpurea
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Clarkia purpurea ssp. purpurea
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Clarkia purpurea ssp. quadrivulnera