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Criteria:   found in Colusa County  •   is native  •  group by lifeform
1997  records include photos for these plants # number of sources
Scientific Name Common Name Lifeform #
  Lifeform: Annual760 plants
  Lifeform: Perennial943 plants
  Lifeform: Fern43 plants
  Lifeform: Shrub206 plants
Adenostoma fasciculatum Chamise Tree, Shrub 15
Adenostoma fasciculatum var. fasciculatum Chamise Tree, Shrub 2
Alnus incana Gray alder Tree, Shrub 6
Alnus incana ssp. tenuifolia Creek alder Tree, Shrub 9
Amelanchier pallida Pallid service berry Shrub 3
Amelanchier utahensis Pale leaved serviceberry Shrub 10
Arctostaphylos canescens Hoary manzanita Shrub 1
Arctostaphylos canescens ssp. canescens Hoary manzanita Shrub  
Arctostaphylos canescens ssp. sonomensis Sonoma manzanita Shrub 1
Arctostaphylos glandulosa Eastwood manzanita Shrub 7
Arctostaphylos glandulosa f. cushingiana Cushing's manzanita Shrub  
Arctostaphylos glandulosa ssp. cushingiana Cushing manzanita Shrub 1
Arctostaphylos glandulosa ssp. glandulosa Eastwood manzanita Shrub 3
Arctostaphylos glandulosa ssp. zacaensis Zaca lake manzanita Shrub 3
Arctostaphylos malloryi Balaklala manzanita Shrub  
Arctostaphylos manzanita Common manzanita Shrub 27
Arctostaphylos manzanita ssp. elegans Konocti manzanita Shrub  
Arctostaphylos manzanita ssp. manzanita Common manzanita Shrub 1
Arctostaphylos manzanita ssp. roofii Roof's manzanita Shrub  
Arctostaphylos nevadensis Pine mat manzanita Shrub 6
Arctostaphylos patula Green leaf manzanita Shrub 14
Arctostaphylos viscida Whiteleaf manzanita Tree, Shrub 6
Arctostaphylos viscida ssp. mariposa Mariposa manzanita Tree, Shrub 1
Arctostaphylos viscida ssp. pulchella White leaf manzanita Tree, Shrub  
Arctostaphylos viscida ssp. viscida Smooth white leaf manzanita Tree, Shrub 2
Aristolochia californica California pipevine Vine, Shrub 25
Atriplex lentiformis Big saltbush Shrub 36
Baccharis pilularis Coyote brush Shrub 60
Baccharis salicifolia Mule fat Shrub 28
Baccharis salicifolia ssp. salicifolia Mule fat Shrub 10
Berberis aquifolium Mountain grape Shrub 47
Berberis aquifolium var. dictyota Jepson's oregon grape Shrub 3
Berberis aquifolium var. repens Creeping oregon grape Shrub 31
Calycanthus occidentalis Spicebush Shrub 42
Ceanothus cordulatus Snow bush Shrub 7
Ceanothus cuneatus Buck brush Shrub 24
Ceanothus cuneatus var. cuneatus Buck brush Shrub 3
Ceanothus integerrimus Deer brush Shrub 16
Ceanothus integerrimus var. macrothyrsus Deerbrush Shrub 16
Ceanothus jepsonii Musk brush Shrub  
Ceanothus jepsonii var. albiflorus White flowered musk brush Shrub  
Ceanothus oliganthus Hairy ceanothus Shrub 7
Ceanothus oliganthus var. sorediatus Jim brush Shrub  
Ceanothus palmeri Palmer's ceanothus Shrub 1
Ceanothus parryi Parry ceanothus Shrub  
Ceanothus prostratus Mahala mats Shrub 11
Cephalanthus occidentalis Common buttonbush Shrub 15
Cephalanthus occidentalis var. californicus California buttonbush Shrub 15
Cercis occidentalis Western redbud Tree, Shrub 66
Cercocarpus betuloides Birch leaf mountain mahogany Tree, Shrub 47
Cercocarpus betuloides var. betuloides Birch leaf mountain mahogany Tree, Shrub 2
Cercocarpus ledifolius Desert mountainmahogany Tree, Shrub 18
Chrysothamnus nauseosus Common rabbitbrush Shrub 25
Chrysothamnus nauseosus ssp. albicaulis Rubber rabbitbrush Shrub  
Cornus glabrata Brown dogwood Tree, Shrub 12
Cornus sericea American dogwood Shrub 44
Cornus sericea ssp. occidentalis Western dogwood Shrub 9
Cornus sericea ssp. sericea Red osier dogwood Shrub 33
Crocanthemum aldersonii Alderson's rush-rose Shrub 12
Crocanthemum scoparium Bisbee Peak Rushrose Shrub 13
Crocanthemum scoparium var. scoparium Peak Rushrose Shrub 12
Crocanthemum scoparium var. vulgare Peak Rushrose Shrub 12
Cupressus macnabiana Macnab's cypress Tree, Shrub 7
Cupressus sargentii Sargent cypress Tree, Shrub 3
Dendromecon rigida Bush poppy Shrub 14
Diplacus aurantiacus Sticky monkeyflower Shrub 51
Ericameria greenei Greene's goldenbush Shrub 1
Ericameria linearifolia Interior goldenbush Shrub 6
Ericameria nauseosa Rubber rabbitbrush Shrub 25
Ericameria nauseosa var. speciosa Rubber rabbitbrush Shrub  
Eriodictyon californicum Yerba santa Shrub 11
Eriogonum fasciculatum California buckwheat Shrub 44
Eriogonum fasciculatum var. fasciculatum California buckwheat Shrub 4
Eriogonum nudum Naked buckwheat Shrub 15
Eriogonum nudum var. auriculatum Nude buckwheat Shrub 1
Eriogonum nudum var. nudum Nude buckwheat Shrub 1
Eriogonum tripodum Tripod buckwheat Shrub  
Euonymus occidentalis Western burning bush Tree, Shrub 7
Forestiera pubescens Desert olive Shrub 5
Frangula californica California coffeeberry Shrub 53
Frangula californica ssp. californica California coffeeberry Shrub 44
Frangula californica ssp. crassifolia Serpentine hoary coffeeberry Shrub  
Frangula californica ssp. tomentella Hoary coffeeberry Shrub 13
Frangula purshiana Cascara sagrada Tree, Shrub 19
Fraxinus dipetala Two petaled ash Tree, Shrub 7
Fraxinus jonesii California ash Tree, Shrub 7
Galium porrigens Climbing bedstraw Vine, Shrub  
Galium porrigens var. porrigens Graceful bedstraw Vine, Shrub  
Galium porrigens var. tenue Graceful bedstraw Vine, Shrub  
Garrya congdonii Silk tassel Shrub  
Garrya elliptica Coast silk tassel Tree, Shrub 31
Garrya flavescens Ashy silk tassel Shrub 1
Garrya fremontii Fremont's silk tassel Shrub 5
Garrya veatchii Southern silk tassel Shrub 1
Helianthemum scoparium Broom rose Shrub 13
Helianthemum suffrutescens Bisbee peak rush rose Shrub 12
Hesperocyparis macnabiana Macnab cypress Tree, Shrub 7
Hesperocyparis sargentii Sargent cypress Tree, Shrub 3
Heteromeles arbutifolia Toyon Shrub 66
Holodiscus discolor Oceanspray Shrub 41
Holodiscus discolor var. discolor Oceanspray Shrub 2
Holodiscus microphyllus Oceanspray Shrub 40
Holodiscus microphyllus var. glabrescens Rock spiraea Shrub 40
Holodiscus microphyllus var. microphyllus Little leaf creambush Shrub 40
Juniperus californica California juniper Shrub 4
Keckiella breviflora Gaping keckiella Shrub 4
Keckiella corymbosa Red beardtongue Shrub 3
Keckiella lemmonii Lemmon's keckiella Shrub 1
Lepechinia calycina Pitcher sage Shrub 15
Leptodactylon pungens Prickly phlox Shrub  
Linanthus pungens Granite prickly phlox Shrub  
Lonicera interrupta Chaparral honeysuckle Vine, Shrub 6
Lonicera involucrata Coast twinberry Shrub 42
Lonicera involucrata var. ledebourii Coast twinberry Shrub 2
Lupinus albifrons Silver bush lupine Shrub 36
Lupinus albifrons var. albifrons Silver bush lupine Shrub 5
Lupinus albifrons var. collinus Silver bush lupine Shrub 8
Lupinus arboreus Coastal bush lupine Shrub 26
Malacothamnus fremontii Fremont's bush mallow Shrub 9
Malacothamnus helleri Heller's bush mallow Shrub 9
Mimulus aurantiacus Sticky monkeyflower Shrub 57
Mimulus aurantiacus var. aurantiacus Sticky monkeyflower Shrub 4
Mimulus puniceus Red bush monkeyflower Shrub 53
Monardella follettii Follett's monardella Shrub 1
Oemleria cerasiformis Oso berry Shrub 18
Phoradendron bolleanum Bollean mistletoe Shrub (parasitic)  
Phoradendron juniperinum Mistletoe Shrub (parasitic)  
Phoradendron leucarpum American mistletoe Shrub (parasitic)  
Phoradendron leucarpum ssp. macrophyllum Big leaf mistletoe Shrub (parasitic)  
Phoradendron leucarpum ssp. tomentosum Mistletoe Shrub (parasitic)  
Phoradendron libocedri Incense cedar mistletoe Shrub (parasitic)  
Phoradendron macrophyllum Big leaf mistletoe Shrub (parasitic)  
Phoradendron serotinum Mistletoe Shrub (parasitic)  
Phoradendron serotinum ssp. macrophyllum Big leaf mistletoe Shrub (parasitic)  
Phoradendron serotinum ssp. tomentosum Pacific mistletoe Shrub (parasitic)  
Phoradendron villosum Hairy mistletoe Shrub (parasitic)  
Pickeringia montana Chaparral pea Shrub 3
Pickeringia montana var. montana Chaparral pea Shrub  
Prunus emarginata Bitter cherry Tree, Shrub 15
Prunus subcordata Sierra plum Tree, Shrub 4
Prunus virginiana Chokecherry Tree, Shrub 29
Prunus virginiana var. demissa Western choke cherry Tree, Shrub 10
Prunus virginiana var. melanocarpa Black chokecherry Tree, Shrub 8
Ptelea crenulata Hop tree Tree, Shrub 4
Purshia tridentata Antelope bush Shrub 18
Purshia tridentata var. tridentata Antelope bitterbrush Shrub 18
Quercus dumosa Scrub oak Shrub 10
Quercus durata Leather oak Shrub 10
Quercus durata var. durata Leather oak Shrub 2
Quercus palmeri Palmer's oak Shrub  
Quercus vacciniifolia Huckleberry oak Shrub 5
Quercus wislizeni Interior live oak Tree, Shrub 24
Quercus wislizeni var. frutescens Live oak Tree, Shrub 1
Quercus wislizeni var. wislizeni Interior live oak Tree, Shrub 3
Rhamnus californica Coffee berry Shrub 63
Rhamnus californica ssp. californica California coffeeberry Shrub 10
Rhamnus ilicifolia Evergreen buckthorn Shrub 17
Rhamnus purshiana Cascara sagrada Tree, Shrub 17
Rhamnus tomentella Hoary coffeeberry Shrub 10
Rhamnus tomentella ssp. crassifolia Velvet leaf coffeeberry Shrub  
Rhamnus tomentella ssp. tomentella Chaparral coffee berry Shrub 6
Rhododendron occidentale Western azalea Tree, Shrub 23
Rhus aromatica Fragrant sumac Shrub 33
Rhus trilobata Skunkbrush Shrub 33
Rhus trilobata var. simplicifolia Single leaf skunkbrush Shrub 8
Ribes binominatum Trailing gooseberry Shrub  
Ribes californicum California gooseberry Shrub 8
Ribes divaricatum Spreading gooseberry Shrub 10
Ribes divaricatum var. pubiflorum Spreading gooseberry Shrub 2
Ribes lobbii Gummy gooseberry Shrub 2
Ribes malvaceum Chaparral currant Shrub 24
Ribes malvaceum var. malvaceum Chaparral currant Shrub 3
Ribes malvaceum var. viridifolium Chaparral currant Shrub 7
Ribes nevadense Mountain pink currant Shrub 11
Ribes quercetorum Oak gooseberry Shrub 2
Ribes roezlii Sierra gooseberry Shrub 10
Ribes roezlii var. cruentum Spiny fruited gooseberry Shrub 3
Rosa californica California wild rose Shrub 52
Rosa gymnocarpa Wood rose Shrub 21
Rubus leucodermis White bark raspberry Shrub 8
Rubus parviflorus Thimbleberry Vine, Shrub 38
Rubus ursinus California blackberry Vine, Shrub 39
Salix breweri Serpentine willow Shrub 1
Salix exigua Narrowleaf willow Tree, Shrub 26
Salix exigua var. hindsiana Sandbar willow Tree, Shrub 25
Salix hindsiana Sandbar willow Tree, Shrub 25
Salix lasiolepis Arroyo willow Tree, Shrub 24
Salix lucida Shining willow Tree, Shrub 19
Salix melanopsis Dusky willow Tree, Shrub 4
Salix sitchensis Coulter willow Tree, Shrub 14
Salvia mellifera Black sage Shrub 47
Sambucus mexicana Elderberry Tree, Shrub 41
Sambucus nigra Black elderberry Shrub 14
Sambucus nigra ssp. caerulea Blue elderberry Shrub 61
Senecio flaccidus Shrubby ragwort Shrub 6
Senecio flaccidus var. douglasii Bush groundsel Shrub 3
Solanum parishii Parish's purple nightshade Shrub 3
Solanum umbelliferum Blue witch Shrub 10
Styrax redivivus California snowdrop bush Shrub 10
Symphoricarpos acutus Creeping snowberry Shrub 17
Symphoricarpos hesperius Creeping snowberry Shrub 17
Symphoricarpos mollis Snowberry Shrub 18
Toxicodendron diversilobum Poison oak Vine, Shrub 7
Trichostema parishii Parish's bluecurls Shrub 1
Viburnum ellipticum Common viburnum Shrub 5
Vitis californica California wild grape Vine, Shrub 41
  Lifeform: Tree43 plants
 
Pink background indicates a plant is non-native.
! indicates a plant is potentially invasive.
NB: found in Colusa County is intended to indicate only plants found growing in the wild. However, the evidence is not always clear, and may occasionally include plants found in cultivation. To verify the wild presence of any particular plant in the list above, please click through to Calflora and look closely at the observations in this county.