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University of California, Berkeley
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Jepson eFlora:
Index Page
Vascular Plants of California
Key to families
|
Table of families and genera
Scientific Name
Index Page: O
Scientific Name
Common Name
Obione bracteosa
(Under Atriplex serenana)
Synonym
Obione confertifolia
(Under Atriplex confertifolia)
Synonym
Obione cordulata
(Under Atriplex cordulata)
Synonym
Obione coulteri
(Under Atriplex coulteri)
Synonym
Obione elegans
(Under Atriplex elegans)
Synonym
Obione flavida
(Under Atriplex flavida)
Synonym
Obione fruticulosa
(Under Atriplex fruticulosa)
Synonym
Obione glauca
(Under Atriplex glauca)
Synonym
Obione hymenelytra
(Under Atriplex hymenelytra)
Synonym
Obione lentiformis
(Under Atriplex lentiformis)
Synonym
Obione leucophylla
(Under Atriplex leucophylla)
Synonym
Obione microcarpa
(Under Atriplex pacifica)
Synonym
Obione parishii
(Under Atriplex parishii)
Synonym
Obione polycarpa
(Under Atriplex polycarpa)
Synonym
Obione pusilla
(Under Atriplex pusilla)
Synonym
Obione radiata
(Under Atriplex elegans)
Synonym
Obione torreyi
(Under Atriplex torreyi var. torreyi)
Synonym
Obione truncata
(Under Atriplex truncata)
Synonym
Obione tularensis
(Under Atriplex tularensis)
Synonym
Ocimum salinum
(Under Frankenia salina)
Synonym
Odontostomum
Odontostomum hartwegii
Native
Oemleria
OSO BERRY
Oemleria cerasiformis
Native
Oenanthe
Oenanthe sarmentosa
Native
Oenothera
↳ Key to Oenothera
EVENING-PRIMROSE
Oenothera ×erythrosepala
(Under Oenothera glazioviana)
Synonym
Oenothera abramsii
(Under Camissoniopsis pallida subsp. pallida)
Synonym
Oenothera alyssoides
(Under Eremothera boothii subsp. alyssoides)
Synonym
Oenothera andina
(Under Neoholmgrenia andina)
Synonym
Oenothera arenaria
(Under Chylismia arenaria)
Synonym
Oenothera avita
Native
Oenothera avita subsp. avita
Native
Oenothera avita subsp. californica
Native
Oenothera avita subsp. eurekensis
EUREKA DUNES EVENING-PRIMROSE
Native
Oenothera biennis
COMMON EVENING-PRIMROSE
Naturalized
Oenothera biennis
(Under Oenothera villosa subsp. strigosa)
Misapplied name
Oenothera bistorta
(Under Camissoniopsis bistorta)
Synonym
Oenothera bistorta var. veitchiana
(Under Camissoniopsis bistorta)
Synonym
Oenothera boothii
(Under Eremothera boothii)
Synonym
Oenothera boothii subsp. condensata
(Under Eremothera boothii subsp. condensata)
Synonym
Oenothera boothii subsp. decorticans
(Under Eremothera boothii subsp. decorticans)
Synonym
Oenothera boothii subsp. desertorum
(Under Eremothera boothii subsp. desertorum)
Synonym
Oenothera boothii subsp. intermedia
(Under Eremothera boothii subsp. intermedia)
Synonym
Oenothera boothii subsp. inyoensis
(Under Eremothera boothii subsp. desertorum)
Synonym
Oenothera boothii subsp. rutila
(Under Eremothera boothii subsp. decorticans)
Synonym
Oenothera brevipes
(Under Chylismia brevipes)
Synonym
Oenothera brevipes subsp. arizonica
(Under Chylismia brevipes subsp. arizonica)
Synonym
Oenothera brevipes subsp. pallidula
(Under Chylismia brevipes subsp. pallidula)
Synonym
Oenothera caespitosa
(Under Oenothera cespitosa)
Orthographic variant
Oenothera caespitosa subsp. crinita
(Under Oenothera cespitosa subsp. crinita)
Orthographic variant
Oenothera caespitosa subsp. marginata
(Under Oenothera cespitosa subsp. marginata)
Orthographic variant
Oenothera californica
(Under Oenothera avita)
Illegitimate name
Oenothera californica subsp. avita
(Under Oenothera avita subsp. avita)
Illegitimate name
Oenothera californica subsp. californica
(Under Oenothera avita subsp. californica)
Illegitimate name
Oenothera californica subsp. eurekensis
(Under Oenothera avita subsp. eurekensis)
Illegitimate name
Oenothera californica var. glabrata
(Under Oenothera avita subsp. californica)
Synonym
Oenothera campestris
(Under Camissonia campestris subsp. campestris)
Synonym
Oenothera campestris subsp. parishii
(Under Camissonia campestris subsp. campestris)
Synonym
Oenothera cardiophylla
(Under Chylismia cardiophylla)
Synonym
Oenothera cardiophylla subsp. robusta
(Under Chylismia cardiophylla subsp. robusta)
Synonym
Oenothera cavernae
CAVE EVENING-PRIMROSE
Native
Oenothera cespitosa
FRAGRANT EVENING-PRIMROSE
Native
Oenothera cespitosa subsp. crinita
CESPITOSE EVENING-PRIMROSE
Native
Oenothera cespitosa subsp. marginata
Native
Oenothera cespitosa var. crinita
(Under Oenothera cespitosa subsp. crinita)
Synonym
Oenothera cespitosa var. marginata
(Under Oenothera cespitosa subsp. marginata)
Synonym
Oenothera chamaenerioides
(Under Eremothera chamaenerioides)
Synonym
Oenothera cheiranthifolia
(Under Camissoniopsis cheiranthifolia)
Synonym
Oenothera cheiranthifolia subsp. suffruticosa
(Under Camissoniopsis cheiranthifolia subsp. suffruticosa)
Synonym
Oenothera cheiranthifolia var. nitida
(Under Camissoniopsis cheiranthifolia)
Synonym
Oenothera cheiranthifolia var. suffruticosa
(Under Camissoniopsis cheiranthifolia subsp. suffruticosa)
Synonym
Oenothera claviformis
(Under Chylismia claviformis)
Synonym
Oenothera claviformis subsp. aurantiaca
(Under Chylismia claviformis subsp. aurantiaca)
Synonym
Oenothera claviformis subsp. citrina
(Under Chylismia claviformis subsp. cruciformis)
Synonym
Oenothera claviformis subsp. cruciformis
(Under Chylismia claviformis subsp. cruciformis)
Synonym
Oenothera claviformis subsp. funerea
(Under Chylismia claviformis subsp. funerea)
Synonym
Oenothera claviformis subsp. integrior
(Under Chylismia claviformis subsp. integrior)
Synonym
Oenothera claviformis subsp. lancifolia
(Under Chylismia claviformis subsp. lancifolia)
Synonym
Oenothera claviformis subsp. peirsonii
(Under Chylismia claviformis subsp. peirsonii)
Synonym
Oenothera claviformis subsp. yumae
(Under Chylismia claviformis subsp. yumae)
Synonym
Oenothera contorta
(Under Camissonia contorta)
Synonym
Oenothera contorta var. flexuosa
(Under Camissonia parvula)
Synonym
Oenothera contorta var. flexuosa
(Under Camissonia pusilla)
Unabridged misapplied name
Oenothera cruciata
(Under Camissonia contorta)
Illegitimate name
Oenothera cruciata
(Under Camissonia lacustris)
Unabridged misapplied name
Oenothera curtiflora
LIZARD-TAIL, VELVET WEED
Naturalized
Oenothera decorticans
(Under Eremothera boothii subsp. decorticans)
Synonym
Oenothera deltoides
DEVIL'S LANTERN, LION-IN-A-CAGE, BASKET EVENING-PRIMROSE
Native
Oenothera deltoides subsp. cognata
Native
Oenothera deltoides subsp. deltoides
Native
Oenothera deltoides subsp. howellii
ANTIOCH DUNES EVENING-PRIMROSE
Native
Oenothera deltoides subsp. piperi
Native
Oenothera dentata
(Under Camissonia lacustris)
Unabridged misapplied name
Oenothera dentata
(Under Camissonia strigulosa)
Misapplied name
Oenothera deserti
(Under Eremothera refracta)
Synonym
Oenothera elata
Native
Oenothera elata subsp. hirsutissima
Native
Oenothera elata subsp. hookeri
Native
Oenothera flava
Native
Oenothera flava subsp. flava
(Under Oenothera flava)
Synonym
Oenothera glazioviana
Naturalized
Oenothera graciliflora
(Under Tetrapteron graciliflorum)
Synonym
Oenothera guadalupensis subsp. clementina
(Under Camissoniopsis guadalupensis subsp. clementina)
Synonym
Oenothera hallii
(Under Camissoniopsis pallida subsp. hallii)
Synonym
Oenothera heterochroma
(Under Chylismia heterochroma)
Synonym
Oenothera heterochroma subsp. monoensis
(Under Chylismia heterochroma)
Synonym
Oenothera heterophylla
(Under Camissoniopsis bistorta)
Synonym
Oenothera hirta
(Under Camissoniopsis intermedia)
Unabridged misapplied name
Oenothera hirta
(Under Camissoniopsis micrantha)
Illegitimate name
Oenothera hirtella
(Under Camissoniopsis hirtella)
Synonym
Oenothera hookeri
(Under Oenothera villosa subsp. strigosa)
Misapplied name
Oenothera hookeri subsp. angustifolia
(Under Oenothera elata subsp. hirsutissima)
Synonym
Oenothera hookeri subsp. grisea
(Under Oenothera elata subsp. hirsutissima)
Synonym
Oenothera hookeri subsp. montereyensis
(Under Oenothera elata subsp. hookeri)
Synonym
Oenothera hookeri subsp. venusta
(Under Oenothera elata subsp. hirsutissima)
Synonym
Oenothera hookeri subsp. wolfii
(Under Oenothera wolfii)
Synonym
Oenothera ignota
(Under Camissoniopsis confusa)
Unabridged misapplied name
Oenothera ignota
(Under Camissoniopsis ignota)
Synonym
Oenothera kernensis subsp. gilmanii
(Under Camissonia kernensis subsp. gilmanii)
Synonym
Oenothera kernensis subsp. mojavensis
(Under Camissonia kernensis subsp. gilmanii)
Synonym
Oenothera laciniata
Naturalized
Oenothera laciniata subsp. pubescens
(Under Oenothera pubescens)
Synonym
Oenothera leptocarpa
(Under Eulobus californicus)
Synonym
Oenothera longissima
LONG-STEM EVENING-PRIMROSE
Native
Oenothera longissima subsp. clutei
(Under Oenothera longissima)
Synonym
Oenothera micrantha
(Under Camissoniopsis intermedia)
Unabridged misapplied name
Oenothera micrantha
(Under Camissoniopsis lewisii)
Unabridged misapplied name
Oenothera micrantha
(Under Camissoniopsis luciae)
Unabridged misapplied name
Oenothera micrantha
(Under Camissoniopsis micrantha)
Synonym
Oenothera micrantha
(Under Camissoniopsis robusta)
Unabridged misapplied name
Oenothera micrantha var. ignota
(Under Camissoniopsis ignota)
Synonym
Oenothera micrantha var. jonesii
(Under Camissoniopsis hirtella)
Synonym
Oenothera micrantha var. jonesii
(Under Camissoniopsis luciae)
Unabridged misapplied name
Oenothera minor
(Under Eremothera minor)
Synonym
Oenothera multijuga var. parviflora
(Under Chylismia walkeri subsp. tortilis)
Synonym
Oenothera munzii
(Under Chylismia munzii)
Synonym
Oenothera ovata
(Under Taraxia ovata)
Synonym
Oenothera palmeri
(Under Tetrapteron palmeri)
Synonym
Oenothera parvula
(Under Camissonia parvula)
Synonym
Oenothera primiveris
Native
Oenothera primiveris subsp. bufonis
(Under Oenothera primiveris)
Synonym
Oenothera pterosperma
(Under Chylismiella pterosperma)
Synonym
Oenothera pubens
(Under Camissonia pubens)
Synonym
Oenothera pubescens
Native
Oenothera refracta
(Under Eremothera refracta)
Synonym
Oenothera rosea
Waif
Oenothera scapoidea var. tortilis
(Under Chylismia walkeri subsp. tortilis)
Synonym
Oenothera sinuosa
WAVY-LEAVED GAURA
Naturalized
Oenothera speciosa
Naturalized
Oenothera speciosa var. childsii
(Under Oenothera speciosa)
Synonym
Oenothera stricta subsp. stricta
Waif
Oenothera strigosa
(Under Oenothera villosa subsp. strigosa)
Synonym
Oenothera strigulosa
(Under Camissonia contorta)
Unabridged misapplied name
Oenothera strigulosa
(Under Camissonia strigulosa)
Synonym
Oenothera subacaulis
(Under Taraxia subacaulis)
Synonym
Oenothera subacaulis var. taraxacifolia
(Under Taraxia subacaulis)
Synonym
Oenothera suffrutescens
WILD HONEYSUCKLE, LINDA TARDE
Native
Oenothera tanacetifolia
(Under Taraxia tanacetifolia)
Synonym
Oenothera villosa subsp. strigosa
Native
Oenothera walkeri subsp. tortilis
(Under Chylismia walkeri subsp. tortilis)
Synonym
Oenothera wolfii
WOLF'S EVENING-PRIMROSE
Native
Oenothera xenogaura
Naturalized
Oenothera xylocarpa
Native
Olea
OLIVE
Olea europaea
Naturalized
Olea europaea subsp. africana
(Under Olea europaea)
Synonym
Oleaceae
↳ Key to Oleaceae
OLIVE FAMILY
Oligomeris
Oligomeris linifolia
Native
Olneya
IRONWOOD
Olneya tesota
IRONWOOD
Native
Olsynium
Olsynium douglasii var. douglasii
PURPLE-EYED-GRASS, GRASS WIDOWS
Native
Onagraceae
↳ Key to Onagraceae
EVENING-PRIMROSE FAMILY
Oncosiphon
Oncosiphon pilulifer
STINKNET
Naturalized
Oncosiphon piluliferum
(Under Oncosiphon pilulifer)
Orthographic variant
Onobrychis
Onobrychis viciifolia
SANFOIN
Naturalized
Onopordum
↳ Key to Onopordum
Onopordum acanthium subsp. acanthium
SCOTCH THISTLE
Naturalized
Onopordum illyricum
ILLYRIAN THISTLE
Naturalized
Onopordum tauricum
TAURIAN THISTLE
Naturalized
Onychium densum
(Under Aspidotis densa)
Synonym
Ophioglossaceae
↳ Key to Ophioglossaceae
ADDER'S-TONGUE FAMILY
Ophioglossum
↳ Key to Ophioglossum
ADDER'S-TONGUE
Ophioglossum californicum
CALIFORNIA ADDER'S-TONGUE
Native
Ophioglossum lusitanicum subsp. californicum
(Under Ophioglossum californicum)
Synonym
Ophioglossum pusillum
NORTHERN ADDER'S-TONGUE
Native
Ophioglossum vulgatum var. pseudopodum
(Under Ophioglossum pusillum)
Synonym
Opuntia
↳ Key to Opuntia
PRICKLY-PEAR
Opuntia ×charlestonensis
Native
Opuntia ×fosbergii
(Under Cylindropuntia fosbergii)
Synonym
Opuntia ×munzii
(Under Cylindropuntia munzii)
Synonym
Opuntia ×occidentalis
Native
Opuntia ×vaseyi
(Under Opuntia vaseyi)
Synonym
Opuntia ×wigginsii
(Under Cylindropuntia echinocarpa)
Synonym
Opuntia acanthocarpa subsp. ganderi
(Under Cylindropuntia ganderi)
Synonym
Opuntia acanthocarpa var. coloradensis
(Under Cylindropuntia acanthocarpa var. acanthocarpa)
Synonym
Opuntia basilaris
Native
Opuntia basilaris var. basilaris
BEAVERTAIL
Native
Opuntia basilaris var. brachyclada
SHORT-JOINT BEAVERTAIL
Native
Opuntia basilaris var. ramosa
(Under Opuntia basilaris var. basilaris)
Synonym
Opuntia basilaris var. treleasei
BAKERSFIELD CACTUS
Native
Opuntia bernardina
(Under Cylindropuntia bernardina)
Synonym
Opuntia bigelovii
(Under Cylindropuntia bigelovii)
Synonym
Opuntia bigelovii var. hoffmannii
(Under Cylindropuntia fosbergii)
Synonym
Opuntia californica var. parkeri
(Under Cylindropuntia bernardina)
Synonym
Opuntia chlorotica
PANCAKE PRICKLY-PEAR
Native
Opuntia curvispina
Native
Opuntia echinocarpa
(Under Cylindropuntia echinocarpa)
Synonym
Opuntia echinocarpa var. parkeri
(Under Cylindropuntia bernardina)
Synonym
Opuntia engelmannii var. engelmannii
ENGELMANN PRICKLY-PEAR
Native
Opuntia erinacea var. erinacea
(Under Opuntia polyacantha var. erinacea)
Synonym
Opuntia erinacea var. hystricina
(Under Opuntia polyacantha var. hystricina)
Synonym
Opuntia erinacea var. ursina
(Under Opuntia polyacantha var. erinacea)
Synonym
Opuntia erinacea var. utahensis
(Under Opuntia polyacantha var. erinacea)
Synonym
Opuntia ficus-indica
MISSION PRICKLY-PEAR
Naturalized
Opuntia ficus-indica
(Under Opuntia ×occidentalis)
Unabridged misapplied name
Opuntia fosbergii
(Under Cylindropuntia fosbergii)
Synonym
Opuntia fragilis
BRITTLE PRICKLY-PEAR
Native
Opuntia ganderi
(Under Cylindropuntia ganderi)
Synonym
Opuntia humistrata
(Under Opuntia basilaris var. brachyclada)
Synonym
Opuntia leucotricha
NOPAL DURAZNILLO
Waif
Opuntia littoralis
Native
Opuntia littoralis
(Under Opuntia oricola)
Unabridged misapplied name
Opuntia littoralis var. austrocalifornica
(Under Opuntia vaseyi)
Synonym
Opuntia littoralis var. piercei
(Under Opuntia phaeacantha)
Synonym
Opuntia littoralis var. vaseyi
(Under Opuntia vaseyi)
Synonym
Opuntia megacantha
(Under Opuntia ficus-indica)
Unabridged misapplied name
Opuntia microdasys
BUNNY EARS
Naturalized
Opuntia munzii
(Under Cylindropuntia munzii)
Synonym
Opuntia occidentalis
(Under Opuntia littoralis)
Unabridged misapplied name
Opuntia occidentalis var. covillei
(Under Opuntia vaseyi)
Synonym
Opuntia oricola
Native
Opuntia parishii
(Under Grusonia parishii)
Synonym
Opuntia parryi
(Under Cylindropuntia bernardina)
Synonym
Opuntia parryi var. parryi
(Under Cylindropuntia bernardina)
Synonym
Opuntia parryi var. serpentina
(Under Cylindropuntia californica var. californica)
Synonym
Opuntia phaeacantha
BROWN-SPINED PRICKLY-PEAR
Native
Opuntia phaeacantha var. discata
(Under Opuntia engelmannii var. engelmannii)
Synonym
Opuntia phaeacantha var. major
(Under Opuntia phaeacantha)
Synonym
Opuntia polyacantha
STARVATION PRICKLY-PEAR
Native
Opuntia polyacantha var. erinacea
MOJAVE PRICKLY-PEAR, GRIZZLY BEAR PRICKLY-PEAR
Native
Opuntia polyacantha var. hystricina
PORCUPINE PRICKLY-PEAR
Native
Opuntia polyacantha var. rufispina
(Under Opuntia polyacantha var. erinacea)
Misapplied name
Opuntia prolifera
(Under Cylindropuntia prolifera)
Synonym
Opuntia pulchella
(Under Grusonia pulchella)
Synonym
Opuntia ramosissima
(Under Cylindropuntia ramosissima)
Synonym
Opuntia robusta
NOPAL TAPON
Waif
Opuntia semispinosa
(Under Opuntia littoralis)
Synonym
Opuntia serpentina
(Under Cylindropuntia californica var. californica)
Synonym
Opuntia stanlyi
(Under Grusonia parishii)
Synonym
Opuntia stanlyi var. parishii
(Under Grusonia parishii)
Synonym
Opuntia treleasei
(Under Opuntia basilaris var. treleasei)
Synonym
Opuntia ursina
(Under Opuntia polyacantha var. erinacea)
Synonym
Opuntia vaseyi
Native
Opuntia whitneyana
(Under Opuntia basilaris var. basilaris)
Synonym
Opuntia wigginsii
(Under Cylindropuntia echinocarpa)
Synonym
Opuntia wolfii
(Under Cylindropuntia wolfii)
Synonym
Orchidaceae
↳ Key to Orchidaceae
ORCHID FAMILY
Orcuttia
↳ Key to Orcuttia
Orcuttia californica
CALIFORNIA ORCUTT GRASS
Native
Orcuttia californica var. inaequalis
(Under Orcuttia inaequalis)
Synonym
Orcuttia californica var. viscida
(Under Orcuttia viscida)
Synonym
Orcuttia greenei
(Under Tuctoria greenei)
Synonym
Orcuttia inaequalis
SAN JOAQUIN VALLEY ORCUTT GRASS
Native
Orcuttia mucronata
(Under Tuctoria mucronata)
Synonym
Orcuttia pilosa
HAIRY ORCUTT GRASS
Native
Orcuttia tenuis
SLENDER ORCUTT GRASS
Native
Orcuttia viscida
SACRAMENTO ORCUTT GRASS
Native
Oreobroma aridorum
(Under Lewisia pygmaea)
Synonym
Oreobroma brachycalyx
(Under Lewisia brachycalyx)
Synonym
Oreobroma congdonii
(Under Lewisia congdonii)
Synonym
Oreobroma exarticulatum
(Under Lewisia pygmaea)
Synonym
Oreobroma heckneri
(Under Lewisia cotyledon var. heckneri)
Synonym
Oreobroma howellii
(Under Lewisia cotyledon var. howellii)
Synonym
Oreobroma leeanum
(Under Lewisia leeana)
Synonym
Oreobroma longipetalum
(Under Lewisia longipetala)
Synonym
Oreobroma oppositifolium
(Under Lewisia oppositifolia)
Synonym
Oreobroma triphyllum
(Under Lewisia triphylla)
Synonym
Oreocarya
↳ Key to Oreocarya
Oreocarya abortiva
BOW-NUT OREOCARYA
Native
Oreocarya confertiflora
YELLOW-FLOWERED OREOCARYA
Native
Oreocarya crymophila
SUBALPINE OREOCARYA
Native
Oreocarya flavoculata
YELLOW-EYED OREOCARYA
Native
Oreocarya glomerata
COCKS-COMB CAT'S-EYE
Native
Oreocarya hoffmannii
WHITE MOUNTAINS OREOCARYA
Native
Oreocarya humilis subsp. humilis
LOW OREOCARYA
Native
Oreocarya nubigena
SIERRA OREOCARYA
Native
Oreocarya roosiorum
BRISTLECONE OREOCARYA
Native
Oreocarya schoolcraftii
SCHOOLCRAFT'S OREOCARYA
Native
Oreocarya sobolifera
CREEPING OREOCARYA
Native
Oreocarya subretusa
CRATER LAKE OREOCARYA
Native
Oreocarya tumulosa
NEW YORK MOUNTAINS OREOCARYA
Native
Oreocarya virginensis
VIRGIN RIVER OREOCARYA
Native
Oreonana
↳ Key to Oreonana
Oreonana clementis
Native
Oreonana purpurascens
PURPLE MOUNTAIN-PARSLEY
Native
Oreonana vestita
WOOLLY MOUNTAIN-PARSLEY
Native
Oreostemma
↳ Key to Oreostemma
ASTER
Oreostemma alpigenum var. andersonii
Native
Oreostemma elatum
TALL ALPINE-ASTER
Native
Oreostemma peirsonii
Native
Origanum
↳ Key to Origanum
Origanum ×majoricum
ITALIAN OREGANO, HARDY SWEET MARJORAM
Naturalized
Origanum vulgare subsp. hirtum
OREGANO
Naturalized
Ornithopus
↳ Key to Ornithopus
Ornithopus pinnatus
Naturalized
Ornithopus sativus
COMMON BIRDSFOOT
Naturalized
Ornithopus sativus subsp. isthmocarpus
(Under Ornithopus sativus)
Synonym
Ornithopus sativus subsp. sativus
(Under Ornithopus sativus)
Synonym
Ornithopus sativus var. macrorrhynchus
(Under Ornithopus sativus)
Synonym
Ornithostaphylos
Ornithostaphylos oppositifolia
BAJA CALIFORNIA BIRDBUSH
Native
Orobanchaceae
↳ Key to Orobanchaceae
BROOMRAPE FAMILY
Orobanche bulbosa
(Under Aphyllon tuberosum)
Synonym
Orobanche californica
(Under Aphyllon californicum)
Synonym
Orobanche californica subsp. condensa
(Under Aphyllon californicum subsp. condensum)
Synonym
Orobanche californica subsp. feudgei
(Under Aphyllon californicum subsp. feudgei)
Synonym
Orobanche californica subsp. grandis
(Under Aphyllon californicum subsp. grande)
Synonym
Orobanche californica subsp. grayana
(Under Aphyllon californicum subsp. grayanum)
Synonym
Orobanche californica subsp. jepsonii
(Under Aphyllon californicum subsp. jepsonii)
Synonym
Orobanche californica var. californica
(Under Aphyllon vallicola)
Unabridged misapplied name
Orobanche californica var. claremontensis
(Under Aphyllon vallicola)
Unabridged misapplied name
Orobanche californica var. corymbosa
(Under Aphyllon corymbosum)
Synonym
Orobanche californica var. parishii
(Under Aphyllon parishii subsp. parishii)
Synonym
Orobanche cooperi
(Under Aphyllon cooperi)
Synonym
Orobanche corymbosa
(Under Aphyllon corymbosum)
Synonym
Orobanche fasciculata
(Under Aphyllon fasciculatum)
Synonym
Orobanche fasciculata var. franciscana
(Under Aphyllon franciscanum)
Synonym
Orobanche fasciculata var. lutea
(Under Aphyllon fasciculatum)
Synonym
Orobanche fasciculata var. subulata
(Under Aphyllon fasciculatum)
Synonym
Orobanche grayana var. feudgei
(Under Aphyllon californicum subsp. feudgei)
Synonym
Orobanche grayana var. grayana
(Under Aphyllon californicum subsp. grayanum)
Synonym
Orobanche grayana var. jepsonii
(Under Aphyllon californicum subsp. jepsonii)
Synonym
Orobanche grayana var. nelsonii
(Under Aphyllon californicum subsp. californicum)
Synonym
Orobanche grayana var. violacea
(Under Aphyllon californicum subsp. californicum)
Synonym
Orobanche parishii
(Under Aphyllon parishii)
Synonym
Orobanche parishii subsp. brachyloba
(Under Aphyllon parishii subsp. brachylobum)
Synonym
Orobanche pinorum
(Under Aphyllon pinorum)
Synonym
Orobanche ramosa
(Under Phelipanche ramosa)
Synonym
Orobanche uniflora
(Under Aphyllon purpureum)
Unabridged misapplied name
Orobanche uniflora subsp. occidentalis
(Under Aphyllon purpureum)
Synonym
Orobanche uniflora var. minuta
(Under Aphyllon purpureum)
Synonym
Orobanche uniflora var. purpurea
(Under Aphyllon purpureum)
Synonym
Orobanche uniflora var. sedi
(Under Aphyllon purpureum)
Synonym
Orobanche valida
(Under Aphyllon validum)
Synonym
Orobanche valida subsp. howellii
(Under Aphyllon validum subsp. howellii)
Synonym
Orobanche vallicola
(Under Aphyllon vallicola)
Synonym
Orochaenactis
Orochaenactis thysanocarpha
Native
Orogenia fusiformis
(Under Lomatium fusiformis)
Synonym
Orthilia
Orthilia secunda
ONE-SIDED WINTERGREEN
Native
Orthocarpus
↳ Key to Orthocarpus
Orthocarpus attenuatus
(Under Castilleja attenuata)
Synonym
Orthocarpus bidwelliae var. micranthus
(Under Triphysaria micrantha)
Synonym
Orthocarpus bracteosus
Native
Orthocarpus brevistyla
(Under Castilleja brevistyla)
Synonym
Orthocarpus campestris
(Under Castilleja campestris)
Synonym
Orthocarpus campestris var. succulentus
(Under Castilleja campestris subsp. succulenta)
Synonym
Orthocarpus castillejoides
(Under Castilleja ambigua)
Synonym
Orthocarpus castillejoides var. humboldtiensis
(Under Castilleja ambigua subsp. humboldtiensis)
Synonym
Orthocarpus castillejoides var. insalutatus
(Under Castilleja ambigua subsp. insalutata)
Synonym
Orthocarpus copelandii
(Under Orthocarpus cuspidatus subsp. copelandii)
Synonym
Orthocarpus copelandii var. cryptanthus
(Under Orthocarpus cuspidatus subsp. cryptanthus)
Synonym
Orthocarpus cuspidatus
Native
Orthocarpus cuspidatus subsp. copelandii
Native
Orthocarpus cuspidatus subsp. cryptanthus
Native
Orthocarpus cuspidatus subsp. cuspidatus
SISKIYOU MOUNTAINS ORTHOCARPUS
Native
Orthocarpus densiflorus
(Under Castilleja densiflora)
Synonym
Orthocarpus densiflorus
(Under Castilleja densiflora subsp. densiflora)
Synonym
Orthocarpus densiflorus subsp. gracilis
(Under Castilleja densiflora subsp. gracilis)
Synonym
Orthocarpus densiflorus var. gracilis
(Under Castilleja densiflora subsp. gracilis)
Synonym
Orthocarpus densiflorus var. obispoensis
(Under Castilleja densiflora subsp. obispoensis)
Synonym
Orthocarpus erianthus
(Under Triphysaria eriantha subsp. eriantha)
Synonym
Orthocarpus erianthus var. gratiosus
(Under Triphysaria eriantha subsp. eriantha)
Synonym
Orthocarpus erianthus var. micranthus
(Under Triphysaria micrantha)
Synonym
Orthocarpus erianthus var. roseus
(Under Triphysaria eriantha subsp. rosea)
Synonym
Orthocarpus faucibarbatus
(Under Triphysaria versicolor subsp. faucibarbata)
Synonym
Orthocarpus faucibarbatus subsp. albidus
(Under Triphysaria versicolor subsp. versicolor)
Synonym
Orthocarpus floribundus
(Under Triphysaria floribunda)
Synonym
Orthocarpus hispidus
(Under Castilleja tenuis)
Synonym
Orthocarpus imbricatus
Native
Orthocarpus lacerus
(Under Castilleja lacera)
Synonym
Orthocarpus lasiorhynchus
(Under Castilleja lasiorhyncha)
Synonym
Orthocarpus linearilobus
(Under Castilleja lineariloba)
Synonym
Orthocarpus lithospermoides var. bicolor
(Under Castilleja rubicundula subsp. rubicundula)
Synonym
Orthocarpus lithospermoides var. lithospermoides
(Under Castilleja rubicundula subsp. lithospermoides)
Synonym
Orthocarpus luteus
Native
Orthocarpus micranthus
(Under Triphysaria micrantha)
Synonym
Orthocarpus pachystachyus
SHASTA ORTHOCARPUS
Native
Orthocarpus purpurascens
(Under Castilleja exserta)
Synonym
Orthocarpus purpurascens
(Under Castilleja exserta subsp. exserta)
Synonym
Orthocarpus purpurascens var. latifolius
(Under Castilleja exserta subsp. latifolia)
Synonym
Orthocarpus purpurascens var. ornatus
(Under Castilleja exserta subsp. venusta)
Synonym
Orthocarpus purpurascens var. pallidus
(Under Castilleja exserta subsp. exserta)
Synonym
Orthocarpus pusillus
(Under Triphysaria pusilla)
Synonym
Orthocarpus versicolor var. roseus
(Under Triphysaria eriantha subsp. rosea)
Synonym
Oryctes
Oryctes nevadensis
NEVADA ORYCTES
Native
Oryza
RICE
Oryza sativa
Naturalized
Oryzopsis exigua
(Under Stipa exigua)
Synonym
Oryzopsis hymenoides
(Under Stipa hymenoides)
Synonym
Oryzopsis kingii
(Under Stipa kingii)
Synonym
Oryzopsis micrantha
(Under Stipa divaricata)
Synonym
Oryzopsis miliacea
(Under Stipa miliacea var. miliacea)
Synonym
Oryzopsis webberi
(Under Stipa webberi)
Synonym
Osmadenia
Osmadenia tenella
OSMADENIA
Native
Osmaronia cerasiformis
(Under Oemleria cerasiformis)
Synonym
Osmorhiza
↳ Key to Osmorhiza
SWEET-CICELY
Osmorhiza berteroi
Native
Osmorhiza brachypoda
Native
Osmorhiza chilensis
(Under Osmorhiza berteroi)
Synonym
Osmorhiza depauperata
BLUNT-FRUITED SWEET-CICELY
Native
Osmorhiza occidentalis
Native
Osmorhiza purpurea
Native
Osteospermum ecklonis
(Under Dimorphotheca ecklonis)
Synonym
Osteospermum fruticosum
(Under Dimorphotheca fruticosa)
Synonym
Ottelia
Ottelia alismoides
Extirpated alien
Ourisia californica
(Under Hesperochiron nanus)
Synonym
Oxalidaceae
OXALIS FAMILY
Oxalis
↳ Key to Oxalis
Oxalis albicans subsp. californica
(Under Oxalis californica)
Synonym
Oxalis albicans subsp. pilosa
(Under Oxalis pilosa)
Synonym
Oxalis articulata subsp. rubra
WINDOWBOX WOOD-SORREL
Naturalized
Oxalis bowiei
BOWIE'S WOOD-SORREL
Waif
Oxalis californica
CALIFORNIA WOOD-SORREL
Native
Oxalis cernua
(Under Oxalis pes-caprae)
Synonym
Oxalis corniculata
Naturalized
Oxalis corniculata subsp. pilosa
(Under Oxalis pilosa)
Synonym
Oxalis corniculata var. wrightii
(Under Oxalis pilosa)
Synonym
Oxalis incarnata
CRIMSON WOOD-SORREL
Naturalized
Oxalis laxa
(Under Oxalis micrantha)
Misapplied name
Oxalis micrantha
DWARF WOOD-SORREL
Naturalized
Oxalis oregana
OREGON WOOD SORREL
Native
Oxalis oregana f. smalliana
(Under Oxalis smalliana)
Synonym
Oxalis oregana var. smalliana
(Under Oxalis smalliana)
Synonym
Oxalis oregana var. smallii
(Under Oxalis smalliana)
Illegitimate name
Oxalis pes-caprae
BERMUDA BUTTERCUP
Naturalized
Oxalis pilosa
Native
Oxalis purpurea
PURPLE WOOD-SORREL
Waif
Oxalis rubra
(Under Oxalis articulata subsp. rubra)
Synonym
Oxalis smalliana
REDWOOD SORREL
Native
Oxalis smallii
(Under Oxalis smalliana)
Illegitimate name
Oxalis suksdorfii
SUKSDORF'S WOOD-SORREL
Native
Oxalis trilliifolia
Native
Oxalis variabilis
(Under Oxalis purpurea)
Synonym
Oxybaphus coccineus
(Under Mirabilis coccinea)
Synonym
Oxybaphus laevis
(Under Mirabilis laevis)
Synonym
Oxybaphus nyctagineus
(Under Mirabilis nyctaginea)
Synonym
Oxypolis
Oxypolis occidentalis
Native
Oxyria
MOUNTAIN SORREL
Oxyria digyna
Native
Oxystylis lutea
(Under Cleomella oxystyloides)
Synonym
Oxytenia acerosa
(Under Euphrosyne acerosa)
Synonym
Oxytheca
↳ Key to Oxytheca
Oxytheca abramsii
(Under Acanthoscyphus parishii var. abramsii)
Synonym
Oxytheca caryophylloides
(Under Sidotheca caryophylloides)
Synonym
Oxytheca dendroidea subsp. dendroidea
TREE-LIKE PUNCTUREBRACT
Native
Oxytheca dendroidea var. foliosa
(Under Oxytheca dendroidea subsp. dendroidea)
Synonym
Oxytheca dendroidea var. hillmanii
(Under Oxytheca dendroidea subsp. dendroidea)
Synonym
Oxytheca emarginata
(Under Sidotheca emarginata)
Synonym
Oxytheca foliosa
(Under Oxytheca dendroidea subsp. dendroidea)
Synonym
Oxytheca glandulosa
(Under Eriogonum glandulosum)
Synonym
Oxytheca hirtiflora
(Under Eriogonum hirtiflorum)
Synonym
Oxytheca inermis
(Under Eriogonum inerme var. inerme)
Synonym
Oxytheca insignis
(Under Aristocapsa insignis)
Synonym
Oxytheca luteola
(Under Goodmania luteola)
Synonym
Oxytheca parishii
(Under Acanthoscyphus parishii)
Synonym
Oxytheca parishii subsp. abramsii
(Under Acanthoscyphus parishii var. abramsii)
Synonym
Oxytheca parishii var. abramsii
(Under Acanthoscyphus parishii var. abramsii)
Synonym
Oxytheca parishii var. cienegensis
(Under Acanthoscyphus parishii var. cienegensis)
Synonym
Oxytheca parishii var. goodmaniana
(Under Acanthoscyphus parishii var. goodmaniana)
Synonym
Oxytheca parishii var. parishii
(Under Acanthoscyphus parishii var. parishii)
Synonym
Oxytheca perfoliata
ROUND-LEAF PUNCTUREBRACT
Native
Oxytheca reddingiana
(Under Eriogonum spergulinum var. reddingianum)
Synonym
Oxytheca spergulina
(Under Eriogonum spergulinum var. spergulinum)
Synonym
Oxytheca trilobata
(Under Sidotheca trilobata)
Synonym
Oxytheca watsonii
WATSON'S OXYTHECA
Native
Oxytropis
↳ Key to Oxytropis
LOCOWEED, OXYTROPE
Oxytropis borealis
BOREAL LOCOWEED
Native
Oxytropis borealis var. australis
Native
Oxytropis borealis var. viscida
STICKY OXYTROPE
Native
Oxytropis deflexa var. culminis
(Under Oxytropis deflexa var. sericea)
Synonym
Oxytropis deflexa var. sericea
BLUE PENDENT-POD OXYTROPE
Native
Oxytropis oreophila
Native
Oxytropis oreophila var. juniperina
MOUNTAIN OXYTROPE
Native
Oxytropis oreophila var. oreophila
ROCK-LOVING OXYTROPE
Native
Oxytropis parryi
PARRY'S OXYTROPE
Native
Oxytropis viscida
(Under Oxytropis borealis var. viscida)
Synonym
Ozomelis
↳ Key to Ozomelis
Ozomelis diversifolia
Native
Ozomelis trifida
Native
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— Page last updated November 08, 2023
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