Brewer's Navarretia
Navarretia breweri
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Threadstem Pincushionplant
Navarretia filicaulis
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Needleleaf Pincushionplant
Navarretia intertexta
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Whitehead Pincushionplant
Navarretia leucocephala
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Whitehead Navarretia
Navarretia leucocephala ssp. leucocephala
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Honeyscented Pincushionplant
Navarretia mellita
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Mitrefruit Pincushionplant
Navarretia mitracarpa
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Downy Pincushionplant
Navarretia pubescens
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Skunkbush
Navarretia squarrosa
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Marigold Navarretia
Navarretia tagetina
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Sticky Pincushionplant
Navarretia viscidula
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Mountain Threadplant
Nemacladus montanus
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Stoutstem Threadplant
Nemacladus rigidus
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Onesided Threadplant
Nemacladus secundiflorus
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Sigmoid Threadplant
Nemacladus sigmoideus
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Small Baby Blue Eyes
Nemophila heterophylla
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Fivespot
Nemophila maculata
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Baby Blue Eyes
Nemophila menziesii
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Pennie Black Baby Blue Eyes
Nemophila menziesii 'Pennie Black'
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Snowstorm Baby Blue Eyes
Nemophila menziesii 'Snowstorm'
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Smallflower Nemophila
Nemophila parviflora
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Littlefoot Nemophila
Nemophila pedunculata
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Eastwood's Baby Blue-eyes
Nemophila pulchella
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Coyote Tobacco
Nicotiana attenuata
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Indian Tobacco
Nicotiana quadrivalvis
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Boraxweed
Nitrophila occidentalis
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Parry's Nolina
Nolina parryi
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Weevil Prairie Dandelion
Nothocalais troximoides
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Blue Toadflax
Nuttallanthus texanus
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Odontostomum
Odontostomum hartwegii
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Pacific Oenanthe
Oenanthe sarmentosa
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California Primrose
Oenothera californica
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California Evening Primrose
Oenothera californica ssp. californica
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Fragrant Evening Primrose
Oenothera cespitosa
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Hooker's Evening Primrose
Oenothera elata ssp. hookeri
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Yellow Evening Primrose
Oenothera flava
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Desert Evening Primrose
Oenothera primiveris
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Douglas' Grasswidow
Olsynium douglasii
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Purple Eyed Grass
Olsynium douglasii var. douglasii
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Beavertail Pricklypear
Opuntia basilaris
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Pancake Prickly-pear
Opuntia chlorotica
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Tulip Pricklypear
Opuntia engelmannii
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Pigmy Tuna
Opuntia fragilis
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Tulip Pricklypear
Opuntia phaeacantha
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Grizzlybear Pricklypear
Opuntia polyacantha var. erinacea
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Fascicled Broom Rape
Orobanche fasciculata
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Rosy Owl's-clover
Orthocarpus bracteosus
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Yellow Owl's Clover
Orthocarpus luteus
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Osmadenia
Osmadenia tenella
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California Sweetcicely
Osmorhiza brachypoda
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Narrowleaf Oxytheca
Oxytheca dendroidea
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Tree-like Puncturebract
Oxytheca dendroidea ssp. dendroidea
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Roundleaf Puncturebract
Oxytheca perfoliata
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Groundsel
Packera breweri
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Woolly Groundsel
Packera cana
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Cleveland's Ragwort
Packera clevelandii
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Lobeleaf Groundsel
Packera multilobata
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Scribner's Panic Grass
Panicum oligosanthes var. scribnerianum
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Western Poppy
Papaver californicum
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Windpoppy
Papaver heterophyllum